To see the other types of publications on this topic, follow the link: Telemetria Satellitare.
Dissertations / Theses on the topic 'Telemetria Satellitare'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Telemetria Satellitare.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Cascavilla, Francesco Paolo. "Sull'impiego di dati telerilevati per la stima del regime idrometrico in sezioni fluviali non strumentate." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.
Find full textAbstract:
La crescente disponibilità di dati da telerilevamento satellitare apre la strada a nuove possibilità di monitoraggio delle grandezze idrauliche (es., livelli idrici, umidità del suolo, estensione delle aree bagnate), rappresentando una risorsa di interesse, specie per le aree scarsamente monitorate mediante tradizionali strumentazioni. La letteratura scientifica oggi riporta numerosi sforzi volti a dimostrare la possibilità di sfruttare tali misure per la caratterizzazione delle portate, e del regime idrologico, dei corsi d’acqua monitorati. Lo scopo di questa tesi è valutare le potenzialità della missione SWOT (Surface Water Ocean Topography; https://swot.jpl.nasa.gov/; in orbita dal 2021) per la stima delle portate di deflusso sulla base della misura del livello idrico in alveo. Le analisi sono condotte lungo il Fiume Po facendo ricorso alla stima delle portate mediante tre approcci semplificati, e riproducendo le misure attese dal satellite mediante un approccio statistico di tipo Monte Carlo. Le portate stimate sono quindi confrontate con le portate osservate presso tre distinte stazioni di misura lungo il Fiume: Borgoforte, Sermide e Pontelagoscuro. Il confronto mette in evidenza un’adeguata stima delle portate partendo dai livelli attesi da SWOT, ottenendo valori significativi di efficienza di Nash-Sutcliffe (efficienza compresa tra 0.86 e 0.94), superiori a quelli attesi dall’utilizzo di livelli altimetrici ad oggi disponibili da altri satelliti.
2
Blasdel, Arthur N. Jr. "Simulating Satellite Telemetry." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614700.
Full textAbstract:
International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, CaliforniaFord Aerospace Corporation has been investigating the use of intelligent systems to automate space mission support functions since the early 1980's. A product of this research is Paragon, a model-based development environment for intelligent systems. Paragon has been used to develop functional models of satellites that are robust in their abilities to represent satellite behavior. The models have been used to simulate both nominal and anomalous temporal behavior. This paper describes our simulation approach and how the telemetry output from the system can be used during training and rehearsals to provide a closed-loop, interactive response to a wide variety of scenarios.
3
Flink, Erik. "A simple fragmentation protocol for satellite telemetry : Transmission of large telemetry from the MIST satellite." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279417.
Full textAbstract:
MIniature STudent satellite (MIST) is a project at the Royal Institute of Technology (KTH) in Stockholm where students build a satellite. The satellite will be placed into orbit around the earth carrying six experiments. One of the experiments on-board the MIST satellite will need to send larger units of data than the radio on-board can send at a time. Therefore, the data will need to be fragmented before it is sent and then defragmented when it is received. The fragmentation protocol to be used, and its implementation, will need to meet the MIST satellite’s requirements and limitations. It should add as little overhead and complexity as possible. This thesis proposes a fragmentation protocol and presents an implementation that enables experiments on-board the MIST satellite to send larger units of data than on-board radio allows. The design of the protocol is based on existing network protocols, but tailored for use on the MIST satellite. The proposed protocol may be possible to use in other satellites or embedded systems applications. This may however require some modifications.MIniature STudent satellite (MIST) är ett projekt på Kungliga Tekniska Högskolan (KTH) i Stockholm där studenter bygger en satellit. Satelliten kommer att placeras i omloppsbana runt jorden med sex experiment ombord. Ett av experimenten ombord på MIST-satelliten behöver skicka större data än vad radiomodulen ombord kan sända åt gången. Därför behöver datan fragmenteras innan den skickas och sedan defragmenteras då den tas emot. Fragmenteringsprotokollet som ska användas, och dess implementation, behöver uppfylla MIST-satellitens krav och begränsningar. Protokollet bör tillföra så lite overhead och komplexitet som möjligt. Detta examensarbete föreslår ett fragmenteringsprotokoll och presenteraren implementation som möjliggör för experimenten ombord MIST-satelliten att sända större data än vad radiomodulen tillåter. Protokollets design är baserat på existerande nätverksprotokoll, men skräddarsytt för att användas av MIST-satelliten. Det föreslagna protokollet kan användas av andra satelliter eller inbyggda system. Detta kan dock kräva vissa anpassningar.
4
STIERS, R., and T. LYDON. "REMOTE TELEMETRY CONCEPTS." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613126.
Full textAbstract:
International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaA Remote Telemetry Station (RTS) was developed to support Boeing’s requirement to relocate its flight test telemetry range away from Seattle, Wa. As requirements to relocate the test range were investigated high level requirements were documented and various approaches were evaluated. The end result of the analysis and requirements definition was the procurement of the Remote Telemetry Station (RTS). The RTS is capable of supporting many sites, tracking and receiving up to 1024 Kbits/sec of telemetry data, providing fully redundant two-way radio communication in the UHF and VHF bands, linking all the data back to Seattle and appearing transparent to the users. The RTS was designed and developed by a Boeing/Veda Incorporated team. The end result of this joint design and development effort is a system that meets all Boeing requirements in a highly integrated, extremely efficient, and very flexible package providing for growth through the year 2000.
5
Mazzeo, Francesco. "Sviluppo di un visualizzatore di dati di telemetria satellitari applicato alla missione ESEO." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/18461/.
Full textAbstract:
La tesi si articola in 3 macro capitoli che riguardano: una descrizione della missione ESEO e dell'orbita del satellite, l'implementazione delle pagine di OBDH HK e TC su Grafana e lo sviluppo di un visualizzatore 3D di dati di telemetria.
All'interno del primo capitolo, inoltre, viene fatta una descrizione dei protocolli di telecomunicazione tra ESEO e la Ground Station e di come i vari dati inviati vengono archiviati all'interno di un database MySQL.
Per quanto riguarda il terzo capitolo, invece, è stata sviluppata un'applicazione che mostra un modellino 3D del satellite muoversi in tempo reale attorno al globo terrestre, seguendo la corretta orbita di ESEO e calcolando posizione, velocità e assetto con i dati reali prelevati dal database. Vi è una descrizione della piattaforma Grafana utilizzata per organizzare e visualizzare i dati di telemetria, del framework NodeJS utilizzato per la creazione del server che ospita il visualizzatore 3D e di Cesium, una libreria JavaScript ampiamente utilizzata per la creazione di scenari geospaziali 3D. Per poter scaricare i dati di telemetria aggiornati è stato necessario sviluppare, tramite un'architettura di tipo REST, una GET request che interrogasse il database e ne prelevasse i valori aggiornati degli angoli di assetto. Allo stesso modo vengono scaricati i TLE dal sito CelesTrack. Infine l'applicazione è stata creata utilizzando le funzioni di Cesium e caricata in due pannelli di Grafana, uno per il visualizzatore 3D normale, ed uno zoomato sul satellite per monitorarne l'assetto.
6
Maurer, Ricky L. "NEAR REAL-TIME TELEMETRY UTILIZING SATELLITE COMMUNICATIONS." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608397.
Full textAbstract:
International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaSatellite transmission systems have proven themselves very effective in a variety of applications. One such application is the transmission of telemetry (TM) data and associated information in a near real-time environment. This paper describes the satellite data relay system currently utilized by the Telemetry Data Center at Patuxent River, Maryland and the corresponding remote receiving site, and discusses the performance of this system.
7
Martin, Kamalini. "THE TELEMETRY TEST STATION - AN INTRODUCTION." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613119.
Full textAbstract:
International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe Telemetry Test Station has been developed at the Digital Systems Division, ISRO Satellite Centre, to test House Keeping Telemetry Packages which will be flown onboard satellites. The main feature of the Test Staion is its configurability, since it is intended to be used with different types of (low bit rate) telemetry packages. Other features include automation of test procedure, and reduction in testing time/increase in repeatability due to minimisation of manual interaction. Since the test station comprises GPIB controlled equipment, hardware and software, thf configurability should be built in at all levels and stages, from design to implementation. Thus since the specification is subject to change, the configuration for structure of the system is traosferred from the designer to the user. This results in a large part of the system being devoted to user interface design, since the computer which is an integral part of the setup must be ‘invisible’ to the user. Due to specialised requirements the user and the system are treated at peer level i.e, at any time during the entire test session, the user can override system process and verify/correct it and equally, the system must also verify/correct user input especially with regard to critical test procedures. The test tession itself (after configuration) is divided into three equally important sections: preprocessing, test and analysis. All the data required during the test run should be made ready before the actual test. Since it has been found by experience that this is not always convenient, the preprocessing software is integrated in to the test session so that the user can perform this at any time. Similarly, the results of the test can also be analysed immediately or even during the test to improve subsequent procedures. This paper describes the prototype telemetry test station which has been built and tested over the past two years. This performance has been satisfactory. The system integration features and design problems and solution are high lighted.
8
Massaccesi, Luciano. "Machine Learning Software for Automated Satellite Telemetry Monitoring." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20502/.
Full textAbstract:
During the lifetime of a satellite malfunctions may occur. Unexpected behaviour are monitored using sensors all over the satellite. The telemetry values are then sent to Earth and analysed seeking for anomalies. These anomalies could be detected by humans, but this is considerably expensive. To lower the costs, machine learning techniques can be applied.
In this research many diferent machine learning techniques are tested and compared using satellite telemetry data provided by OHB System AG. The fact that the anomalies are collective, together with some data properties, is exploited to improve the performances of the machine learning algorithms. Since the data comes from a real spacecraft, it presents some defects. The data covers in fact a small time-lapse and does not present critical anomalies due to the spacecraft healthiness. Some steps are then taken to improve the evaluation of the algorithms.
9
Stuhlsatz, Kelly J. "Design & develop a satellite telemetry display application." [Denver, Colo.] : Regis University, 2006. http://165.236.235.140/lib/KStuhlsatz2006.pdf.
Full text
10
Nasta, Rodolphe. "TELECOMMUNICATION SATELLITE TELEMETRY TRACKING AND COMMAND SUB-SYSTEM." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607355.
Full textAbstract:
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, CaliforniaThis paper gives an overview on Telemetry, Tracking and Command (TTC) sub-system that are used onboard some telecommunication satellites. Then, a description of the equipments of such a sub-system is given, together with the main performances.
11
Figueiredo, Marco, and Terry Graessle. "APPLICATION OF ADAPTIVE COMPUTING IN SATELLITE TELEMETRY PROCESSING." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/609214.
Full textAbstract:
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, CaliforniaThe advent of adaptive computers built from re-programmable logic devices presents a potential solution for meeting the data processing requirements of the new era of Earth monitoring satellites to be launched by the National Aeronautics and Space Administration (NASA) Earth Science Enterprise project. The Earth Observing System (EOS) AM-1 spacecraft, the first satellite of this new era, will produce in only six months as much data as NASA has collected to this date. As a consequence, the Earth Science Data and Information System (ESDIS) project is building high performance and highly costly parallel processing systems to address the real-time data production requirements. Together with the high performance front-end ingest and level 0 processing microcircuits developed in-house at the Goddard Space Flight Center’s (GSFC) Data Systems Technology Division (DSTD), adaptive computers present a possible alternative to traditional CPU-based systems to increase the performance while reducing the cost of satellite telemetry processing systems. The Adaptive Scientific Data Processing (ASDP) project has been investigating the use of adaptive computers in the implementation of space borne scientific data processing systems. An order of magnitude processing speed acceleration over high-end workstations has been demonstrated for both level 1 and level 3 algorithms. This paper discusses the use of adaptive computing in satellite telemetry processing systems, level 1 and beyond. Primarily, it describes the efforts and presents the results of two prototypes developed by the ASDP project. The limitations of the current state of the technology are discussed and the expected improvements to facilitate the adoption of adaptive computers are presented. Finally, future work of the ASDP project is discussed.
12
Boshielo, Babudi Turcia. "A reliable telemetry software design for a satellite system." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52129.
Full textAbstract:
Thesis (MScEng)--University of Stellenbosch, 2001.ENGLISH ABSTRACT: One of the requirements for satellite telemetry systems is the provision of reliable telemetry data to allow accurate monitoring of the satellite status. This thesis focuses on the design of telemetry software that meets this data reliability requirement. An improved synchronization strategy to allow efficient ground reception of the telemetry data is implemented on SUNSAT's direct link. The data collection and transmission functions are also enhanced by the addition of the necessary redundant information to the data while meeting the real-time requirements of the system. To enhance the software quality a development methodology entailing structured programming practices and modular decomposition is proposed. It is shown that the resulting telemetry software fulfils the functional requirements.
AFRIKAANSE OPSOMMING: Een van die vereistes vir die satelliet telemetrie stelsel is die verskaffing van betroubare telemetrie date om akkurate monitering van die satelliet status te verseker. Hierdie tesis fokus op die ontwerp van die telemetrie sagteware wat hierdie data betroubaarheid bevredig. 'n Verbeterde sinkronisasie strategie is geïmplementeer om meer effektiewe grond ontvangs te verseker van die telemetrie data op SUNSAT se direkte skakel. Die data versameling en transmissie funksies is ook verder verbeter deur die aanvulling van nodige oortollige informasie in die data terwyl die intydse vereistes van die stelsel steeds bevredig word. Om die sagteware kwaliteit te verbeter is 'n ontwikkelings metodiek voorgestel wat gestruktureerde programeering strukture en modulêre oplossings tot gevolg het. Die voltooide telemetrie sagteware het getoon dat dit al die vereistes bevredig.
13
Culver, Randy. "A DATABASE-DRIVEN SOFTWARE SYSTEM FOR SATELLITE TELEMETRY DECOMMUTATION." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/608565.
Full textAbstract:
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaSatellite Telemetry can be characterized as having relatively low bandwidths, complex wavetrains, and very large numbers of measurands. Ground systems which monitor on-orbit vehicles must process, analyze, display, and archive the telemetry data received during contacts with the satellites. Data from perhaps thousands of individual measurands must be extracted from very complex wavetrains and processed during a live contact. Most commercially available telemetry systems are not well suited to handling satellite wavetrains because they were built for range telemetry and flight test applications which typically deal with limited numbers of measurands. This paper describes the design of a software system which was built specifically to process satellite telemetry. The database-driven system performs full decommutation of very complex wavetrains entirely in software. The system provides for defining the satellite vehicle's telemetry in multiple databases which define the wavetrain formats, the measurands themselves, how they are to be processed, and associated data conversion and calibration information. The database accommodates the complexities typically found in satellite telemetry such as multiple wavetrain formats, embedded streams, measurand dependencies, segmented measurands, and supercommutated, subcommutated, and sub-subcommutated data. A Code Generator builds a set of control structures from the wavetrain and measurand definitions in the database. It then generates highly optimized in-line software libraries for processing the satellite vehicle's telemetry. These libraries are linked to a Server process for run-time execution. During execution, raw telemetry frames are passed to the Server which uses the libraries to decommutate, limit check, convert, and calibrate the measurand data. A Client process attaches to the Server process to allow user applications to access both raw and processed telemetry for display, logging, and additional processing.
14
McKean, Dan. "Implementation of a Reliable Satellite Commanding and Telemetry System." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613120.
Full textAbstract:
International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaA spacecraft command and control system has unique requirements in the areas of telemetry and other data processing. Not only must the system support the processing of high data rate telemetry, but it must also simultaneously support outgoing command streams, usually coupled to the incoming telemetry. In addition, the system must reliably support several satellites (with up to twenty contacts each day per satellite) and be capable of week-long continuous contact with recently launched satellites. Integrating vehicle commanding with a telemetry system utilizing distributed software and hardware processing in such a fashion that no mission data is lost, and presenting the operator with a clean user interface, are just some of the technical challenges that were met in the design of the Operational Mission Unique Equipment (OMUE) project, which was installed earlier this year at the Consolidated Space Test Center (CSTC) at Onizuka AFB, California. This paper describes several of the technical trade-offs that were made in developing the OMUE system and its implementation.
15
Hamilton, M. J., R. Abbott, P. Eggan, D. Golber, S. Hsieh, L. Jordan, T. Le, et al. "ASW-II: Advanced Satellite Workstation for the UHF Follow-On Satellite Program." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/611921.
Full textAbstract:
International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, CaliforniaASW-II (Advanced Satellite Workstation, Version II) has been developed and delivered as an operational prototype in support of the Ultra High Frequency (UHF) Follow-On satellite. It provides unified and coordinated real time reception and storage of satellite telemetry, display of both real time and stored telemetry, expert-system analysis of spacecraft status, and an information navigator system that stores and presents information about the spacecraft. The architecture is modular and reconfigurable, and it provides support for multiple analyst workstations. There are several unusual aspects of the design. The entire telemetry history of the satellite is regarded as a continuum by the user, with ASW-II automatically tracking and displaying contact periods. A "streams" mechanism organizes the telemetry in such a way that the user can interactively define new derived parameters and have them presented graphically. Both real time and archived data can be displayed simultaneously. The user has very flexible controls for all display interfaces using mouse and window technologies.
16
Gudmundson, Stephan. "TRANSPARENT SATELLITE BANDWIDTH ACCELERATION." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/606743.
Full textAbstract:
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaWhile the transition to IP internetworking in space-based applications has a tremendous upside, there are significant challenges of communications efficiency and compatibility to overcome. This paper describes a very high efficiency, low-risk, incremental architecture for migrating to IP internetworking based on the use of proxies. In addition to impressive gains in communications bandwidth, the architecture provides encapsulation of potentially volatile decisions such as particular vendors and network technologies. The specific benchmarking architecture is a NetAcquire Corporation COTS telemetry system that includes built-in TCP-Tranquility (also known as SCPS-TP) and Reed-Solomon Forward Error Correction capabilities as well as a specialized proxy-capable network stack. Depending on network conditions, we will show that the effective bandwidth for satellite transmissions can be increased as much as a factor of one hundred with no external changes to existing internetworking equipment.
17
Regmi, Bijay. "Database Design and Optimization for Telemetric Aquatic Species-Tracking Systems." ScholarWorks@UNO, 2018. https://scholarworks.uno.edu/honors_theses/118.
Full textAbstract:
Tracking an individual species has always been a challenge for scientists, especially when one has to make sure to not change its natural movement pattern. When the number of individuals being tracked is increased and water is added to the equation, the task becomes next to impossible. But thanks to technologies and tracking methods like telemetry, the task of tracking any species without affecting the natural movement pattern has not only become a reality but easily accessible to scientists. Underwater acoustic telemetry has become a standard tool for fisheries biologist to study the movement pattern of the fish (Heupel). This project develops a minimalistic database designed to meet the needs of the telemetry systems. The database is optimized for storing a large number of datasets generated by the telemetry system and also for the most common queries run against the system.
18
Eatchel, A. L., R. Fevig, C. Cooper, J. Gruenenfelder, and J. Wallace. "DEVELOPMENT OF A BASELINE TELEMETRY SYSTEM FOR THE CUBESAT PROGRAM AT THE UNIVERSITY OF ARIZONA." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/607488.
Full textAbstract:
International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaA telemetry system has been developed at the University of Arizona to serve as a baseline for future CubeSat designs. Two satellites are scheduled for launch in November of 2002. One features a beacon that operates autonomously of all but the power system and can independently deploy the antennas. The other will test the performance of new semiconductor devices in low earth orbit. Sensors will monitor voltages, currents (from which attitude and tumble rate can be derived), received signal strength and a distribution of temperatures. The CubeSat’s architecture, operating system, sensors, telemetry format and link budget are discussed.
19
Brown, Barbie, Parminder Ghuman, Johnny Medina, and Randy Wilke. "A DESKTOP SATELLITE DATA PROCESSING SYSTEM." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607552.
Full textAbstract:
International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe international space community, including National Aeronautics and Space Administration (NASA), European Space Agency (ESA), Japanese National Space Agency (NASDA) and others, are committed to using the Consultative Committee for Space Data Systems (CCSDS) recommendations for low earth orbiting satellites. With the advent of the CCSDS standards and the availability of direct broadcast data from a number of current and future spacecraft, a large number of users could have access to earth science data. However, to allow for the largest possible user base, the cost of processing this data must be as low as possible. By utilizing Very Large Scale Integration (VLSI) Application-Specific Integrated Circuits (ASIC), pipelined data processing, and advanced software development technology and tools, highly integrated CCSDS data processing can be attained in a single desktop system. This paper describes a prototype desktop system based on the Peripheral Component Interconnect (PCI) bus that performs CCSDS standard frame synchronization, bit transition density decoding, Cyclical Redundancy Check (CRC) error checking, Reed-Solomon decoding, data unit sorting, packet extraction, annotation and other CCSDS service processing. Also discussed is software technology used to increase the flexibility and usability of the desktop system. The reproduction cost for the system described is less than 1/8th the current cost of commercially available CCSDS data processing systems.
20
Pillai, Sreelal Sreedharan, Sreekumar Sankarattil, Padma Padmanabhan, Vinod Padmanabha Rao, Sivasubramonia Pillai, Madaswamy Pillai, Damodaran Kollamparambil, Thomas Kurian, and Chidambaram Thirunavukkarasu. "A VERSATILE, SOFTWARE PROGRAMMABLE TELEMETRY SYSTEM FOR SATELLITE LAUNCH VEHICLES." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604256.
Full textAbstract:
ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, CaliforniaWe describe the design and development of a baseband telemetry system for multistage launch vehicles. The system is organized as a three tier one with remote data acquisition and processing units and a centralized control unit. The front-end Data Acquisition Units (DAUs) feature software programmable amplification, offset, filtering and sensor excitation and thus are flexible to interface directly to a variety of sensors used in launch vehicles. The Data Processing Units (DPUs) gather data from DAUs through a serial link compatible to RS-485 standards and carry out a variety of data analysis and data compression functions on selected channels under software control. The central Telemetry Control Unit (TCU) receives this data through a transformer isolated link compatible to MIL-1553B standards and performs the functions of data delay, data storage, onboard computer data monitoring, PCM formatting and pre-modulation signal conditioning to achieve miniaturization. The configuration and features of this telemetry system make its integration simple without compromising on data integrity and reliability and suit the adoption of futuristic technologies and concepts such as smart sensor networks, adaptability, reconfiguration and vehicle health management.
21
Eckert, M., C. Smith, F. Kronberg, F. Girouard, A. Hopkins, L. Wong, P. Ringrose, B. Stroozas, and R. F. Malina. "EUVE Telemetry Processing and Filtering for Autonomous Satellite Instrument Monitoring." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611477.
Full textAbstract:
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, CaliforniaA strategy for addressing the complexity of problem identification and notification by autonomous telemetry monitoring software is discussed. The Extreme Ultraviolet Explorer (EUVE) satellite's science operations center (ESOC) is completing a transition to autonomous operations. Originally staffed by two people, twenty-four hours every day, the ESOC is nearing the end of a phased transition to unstaffed monitoring of the science payload health. To develop criteria for the implementation of autonomous operations we first identified and analyzed potential risk areas. These risk areas were then considered in light of a fully staffed operations model, and in several reduced staffing models. By understanding the accepted risk in the nominal, fully staffed model, we could define what criteria to use in comparing the effectiveness of reduced staff models. The state of the scientific instrument package for EUVE is evaluated by a rule-based telemetry processing software package. In the fully automated implementation, anomalous states are characterized in three tiers: critical to immediate instrument health and safety, non-critical to immediate instrument health and safety, and affecting science data only. Each state requires specific action on the part of the engineering staff, and the response time is determined by the tier. The strategy for implementing this prioritized, autonomous instrument monitoring and paging system is presented. We have experienced a variety of problems in our implementation of this strategy, many of which we have overcome. Problems addressed include: dealing with data dropouts, determining if instrument knowledge is current, reducing the number of times personnel are paged for a single problem, prohibiting redundant notification of known problems, delaying notification of problems for instrument states that do not jeopardize the immediate health of the instrument, assuring a response to problems in a timely manner by engineering staff, and communicating problems and response status among responsible personnel.
22
Tate, James A. "GENERALIZED TELEMETRY PROCESSING FOR THE AIR FORCE SATELLITE CONTROL NETWORK." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615398.
Full textAbstract:
International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, NevadaA telemetry processing capability is being developed for the Air Force Satellite Control Network which will process telemetry data from Air Force satellites of various families in several Mission Control Complexes using identical hardware and software. A Telemetry Higher Order Language is the key element in allowing this commonality.
23
Voudouris, Thanos. "TECHNOLOGY EVOLUTION AND INNOVATION IN SPACECRAFT COMMUNICATIONS." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607346.
Full textAbstract:
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, CaliforniaThis paper discusses the evolution of the ground satellite communication systems and the efforts made by the Goddard Space Flight Center's (GSFC) Advanced Architectures and Automation (AAA) branch, Code 588 to bring satellite scientific data to the user’s desktop. Primarily, it describes the next generation desktop system, its architecture and processing capabilities, which provide autonomous high-performance telemetry acquisition at the lowest possible cost. It also discusses the planning processes and the applicability of new technologies for communication needs in the next century. The paper is presented in terms simple for those not very familiar with current space programs to understand.
24
McClinton, Arthur T. Jr. "Secure Remote Access to Telemetry: A Study in How to Allow Remote Access to Satellite Telemetry Data." International Foundation for Telemetering, 2009. http://hdl.handle.net/10150/606001.
Full textAbstract:
ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, NevadaThe need to allow remote access to telemetry data from closed networks has long existed. To ensure the correct engineers are available for anomaly resolution, NOAA developed the Secure Remote Access Server (SRAS) to allow transfer of satellite telemetry to an external secure server. SRAS uses one-way links to protect the ground system and secure communications for all communications with the user. After the SRAS was developed, a similar system was developed to support file transfers. This paper provides an overview of these systems and lessons learned in the development of one-way fiber systems.
25
Mauldin, Kendall. "NETWORKING SATELLITE GROUND STATIONS USING LABVIEW." International Foundation for Telemetering, 2002. http://hdl.handle.net/10150/607487.
Full textAbstract:
International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, CaliforniaA multi-platform network design that is automated, bi-directional, capable of store and forward operations, and low-bandwidth has been developed to connect multiple satellite ground stations together in real-time. The LabVIEW programming language has been used to develop both the server and client aspects of this network. Future plans for this project include implementing a fully operational ground network using the described concepts, and using this network for real-time satellite operations. This paper describes the design requirements, RF and ground-based network configuration, software implementation, and operational testing of the ground network.
26
Hogie, Keith, Jim Weekley, and Jeremy Jacobsohn. "COMMERCIAL-OFF-THE-SHELF TELEMETRY FRONT-END PROTOTYPING." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/608385.
Full textAbstract:
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, CaliforniaThe world of data communication and networking has grown rapidly over the last decade, and this growth has been accompanied by the development of standards that reflect and facilitate the need for commercial products that work together in a reliable, robust, and coherent fashion. To a great extent this commercialization, with its increasing performance and diminishing cost, has not been adapted to the data communication needs of satellites. As budgets and mission development and deployment timelines shrink, space exploration and science will require the development of standards and the use of increasing amounts of off-the-shelf hardware and software for integrated satellite ground systems. The Renaissance project at NASA/Goddard Space Flight Center has engaged in rapid prototyping of ground systems using off-the-shelf hardware and software products to identify ways of implementing satellite ground systems "faster, better, cheaper". This paper presents various aspects of these activities, including issues related to the configuration and integration of current off-the-shelf products using telemetry databases for existing spacecraft, an analysis of issues related to the development of standard products for satellite communication, tradeoffs between hardware and software approaches to performing telemetry front-end processing functions, and proposals for future standards and development.
27
Losik, Len. "Launch Vehicle and Satellite Independent Failure Analysis Using Telemetry Prognostic Algorithms." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606189.
Full textAbstract:
ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, CaliforniaUnique vehicle designs encourage the use of the builder to complete its own failure analysis. Current failure analysis practices use telemetry and diagnostic technology developed over the past 100 years to identify root-cause. When telemetry isn't available speculation is used to create a list of prioritized, potential causes. Prognostic technology consists of generic algorithms that identify equipment that has failed and is going to fail while the equipment is still at the factory allowing the equipment to be repaired or replaced while it is still on the ground for any spacecraft, satellite, launch vehicle and missile.
28
Maluleke, Enock Vongani. "Satellite-based web server." Thesis, Stellenbosch : Stellenbosch University, 2002. http://hdl.handle.net/10019.1/53040.
Full textAbstract:
Thesis (MScEng)--Stellenbosch University, 2002.ENGLISH ABSTRACT: There is a large variety of telemetry recervmg software currently available for the reception of telemetry information from different satellites. Most of the software used in receiving telemetry data is satellite specific. Hence, a user-friendly way is needed to make telemetry data easily accessible. A satellite-based web server is aimed at providing telemetry information to any standard web browser as a way of bringing space technology awareness to the people. Two different satellite-based web server methods are examined in this thesis. Based on the evaluation, the on-board File server with proxy server was proposed for satellite-based web server development. This requires that the File server be ported to the on-board computer of the satellite. The web proxy server is placed on the ground segment with the necessary communication requirements to communicate with the on-board File server. In the absence of satellite, the satellite-based web server was successfully implemented on two computers, laying a good foundation for implementation on the on-board computer of the satellite (OBe).
AFRIKAANSE OPSOMMING: Daar is 'n groot verskeidenheid telemetrie ontvangs sagteware huidiglik beskikbaar vir die ontvangs van telemetrie informasie vanaf verskillende satelliete. Die meeste van die sagteware wat gebruik word om telemetrie data te ontvang is satelliet spesifiek. Gevolglik, 'n gebruikers vriendelike metode is nodig om telemetrie data maklik beskikbaar te maak. 'n Satelliet-gebaseerde web-bediener word beoog om telemetrie informasie te verskaf aan enige standaard web-blaaier as 'n metode om mense bewus te maak van ruimte tegnologie. Twee verskillende satelliet gebaseerde web-bediener metodes salondersoek word in hierdie tesis. Gebaseer op 'n evaluering, word die aanboord leêr-bediener met instaanbediener voorgestel vir satelliet-gebaseerde webbediener ontwikkeling. Hiervoor is dit nodig dat die leêr-bediener na die aanboord rekenaar van die satelliet gepoort word. Die web instaanbediener word op die grond segment geplaas met die nodige kommunikasie benodighede, om te kommunikeer met die aanboord leêr-bediener. In die afwesigheid van die satelliet was die satellietgebaseerde web-bediener met sukses geïmplementeer op twee rekenaars, met die gevolg dat 'n goeie fondasie gelê is vir die implementering op die aanboord rekenaar van die satelliet (OBC).
29
Orsino, Mary Ellen, and Michael Williams. "PC-BASED TELEMETRY AND COMMAND FRONT-END FOR A DISTRIBUTED SATELLITE CONTROL SYSTEM." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/607590.
Full textAbstract:
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, CaliforniaSatellite Control Systems require a front-end component which performs real-time telemetry acquisition and command output. This paper will describe a fully networked, PC-based telemetry and command front-end which supports multiple streams and is based on Commercial Off The Shelf (COTS) technology. The front-end system is a gateway that accepts multiple telemetry streams and outputs time-tagged frame or packet data over a network to workstations in a distributed satellite control and analysis system. The system also includes a command gateway that accepts input from a command processor and outputs serial commands to the uplink. The front-end can be controlled locally or remotely via the network using Simple Network Management Protocol. Key elements of the front-end system are the Avtec MONARCH-E™ PCI-based CCSDS/TDM Telemetry Processor/Simulator board, a network-based, distributed computing architecture, and the Windows NT operating system. The PC-based telemetry and command gateway is useful throughout the lifecycle of a satellite system. During development, integration, and test, the front-end system can be used as a test tool in a distributed test environment. During operations, the system is installed at remote ground stations, with network links back to operations center(s) for telemetry and command processing and analysis.
30
Losik, Len. "STOPPING LAUNCH PAD DELAYS, LAUNCH FAILURES, SATELLITE INFANT MORTALITIES AND ON ORBIT SATELLITE FAILURES USING TELEMETRY PROGNOSTIC TECHNOLOGY." International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604550.
Full textAbstract:
ITC/USA 2007 Conference Proceedings / The Forty-Third Annual International Telemetering Conference and Technical Exhibition / October 22-25, 2007 / Riviera Hotel & Convention Center, Las Vegas, NevadaTelemetry Prognostics is Failure Prediction using telemetry for launch vehicle and satellite space flight equipment to stop launch failures, launch pad delays, satellite infant mortalities and satellite on orbit failures. This technology characterizes telemetry behaviors that are latent, transient, and go undetected by the most experienced engineering personnel and software diagnostic tools during integration and test, launch operations and on orbit activities stopping launch pad delays, launch failures, infant mortalities and on orbit failures. Telemetry prognostics yield a technology with state-of-the-art innovative techniques for determining critical on-board equipment remaining useful life taking into account system states, attitude reorientations, equipment usage patterns, failure modes and piece part failure characteristics to increase the reliability, usability, serviceability, availability and safety of our nation’s space systems.
31
Farmer, Mike, and Randy Culver. "THE CHALLENGES OF LOW-COST, AUTOMATED SATELLITE OPERATIONS." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608406.
Full textAbstract:
International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaSatellite operations have been inherently manpower intensive since they began over thirty years ago. Since manpower intensive equates to costs, this mode of operations cannot survive in light of government budget cuts and commercial profitability. Two factors are now key for both government and commercial satellite control centers: 1) systems must be highly automated to minimize the operations staff, and 2) these automated systems must be deployed and enhanced at a low cost. This paper describes the three principle challenges which arise in migrating from high-cost, manpower intensive satellite operations to low-cost, automated satellite operations and makes recommendations for solving them.
32
Haddock, Paul C. "TELEMETERY DATA COLLECTION FROM OSCAR SATELLITES." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/607347.
Full textAbstract:
International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, CaliforniaThis paper discusses the design, configuration, and operation of a satellite station built for the Center for Space Telemetering and Telecommunications Laboratory in the Klipsch School of Electrical and Computer Engineering Engineering at New Mexico State University (NMSU). This satellite station consists of a computer-controlled antenna tracking system, 2m/70cm transceiver, satellite tracking software, and a demodulator. The satellite station receives satellite telemetry, allows for voice communications, and will be used in future classes. Currently this satellite station is receiving telemetry from an amateur radio satellite, UoSAT-OSCAR-11. Amateur radio satellites are referred to as Orbiting Satellites Carrying Amateur Radio (OSCAR) satellites.
33
Losik, Len, Sheila Wahl, and Lewis Owen. "Predicting Failures and Estimating Duration of Remaining Service Life from Satellite Telemetry." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611451.
Full textAbstract:
International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, CaliforniaThis paper addresses research completed for predicting hardware failures and estimating remaining service life for satellite components using a Failure Prediction Process (FPP). It is a joint paper, presenting initial research completed at the University of California, Berkeley, Center for Extreme Ultraviolet (EUV) Astrophysics using telemetry from the EUV EXPLORER (EUVE) satellite and statistical computation analysis completed by Lockheed Martin. This work was used in identifying suspect "failure precursors." Lockheed Martin completed an exploration into the application of statistical pattern recognition methods to identify FPP events observed visually by the human expert. Both visual and statistical methods were successful in detecting suspect failure precursors. An estimate for remaining service life for each unit was made from the time the suspect failure precursor was identified. It was compared with the actual time the equipment remained operable. The long-term objective of this research is to develop a resident software module which can provide information on FPP events automatically, economically, and with high reliability for long-term management of spacecraft, aircraft, and ground equipment. Based on the detection of a Failure Prediction Process event, an estimate of remaining service life for the unit can be calculated and used as a basis to manage the failure.
34
Rieger, James L. "THE EFFECTS OF INCREASED SATELLITE POWER FLUX DENSITY ON NWC TELEMETRY OPERATIONS." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615350.
Full textAbstract:
International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, NevadaThis paper presents an analysis of the proposed increase in satellite power flux density as it would affect present, currently proposed, and possible future telemetry operations at NWC and other ranges and multi-range operations. Also included are proposed methods for mitigation of interference if flux density is raised anyway.
35
Bell, John J. (Jack), James Mileshko, Edward L. Payne, and Paul Wagler. "A MULTIFUNCTION SATELLITE BACKHAUL SYSTEM FOR AIRCRAFT FLIGHT TEST APPLICATIONS." International Foundation for Telemetering, 2004. http://hdl.handle.net/10150/605336.
Full textAbstract:
International Telemetering Conference Proceedings / October 18-21, 2004 / Town & Country Resort, San Diego, CaliforniaThis paper will present the design of a network used to receive and record sensor data and provide voice communications between a flight controller and the pilot of an aircraft undergoing flight testing in remote areas. The network utilizes a completely self-contained mobile tracking subsystem to receive and relay the sensor data and cockpit voice in real-time over a geostationary satellite. In addition to the aircraft tracking and data/voice relay functions, the system also provides local data recording at the mobile station, telephone and intercom connectivity between the mobile station and the control center, and remote equipment setup via the satellite link.
36
Massey, David E. "Satellite Ground Station Cost/Performance Appraisal." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/609743.
Full textAbstract:
International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, NevadaThe proliferation of Low Earth Orbiting (LEO) science, earth resources and eventually global communications satellites either in orbit or planned, requires a much lower cost methodology for ground support. No longer is it economically feasible to consider a single, dedicated satellite tracking station to service a LEO spacecraft. An innovative approach is needed to lower the cost of LEO satellite data services thus contributing to the expansion of the commercial space market. This appraisal will cover the performance aspects needed for LEO tracking support and offer a unique and new solution to providing TT&C and payload services.
37
Flint, Keith D., Gregory P. Mathis, and Tom G. Cronauer. "The Phillips Laboratory's Mobile Ground Telemetry Station (MGTS) Configuration and Operations." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/611830.
Full textAbstract:
International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, NevadaIn support of the various programs that the Phillips Laboratory's Space Experiments Directorate is conducting for the Ballistic Missile Defense Organization (BMDO), the Range Operations Division is developing a mobile telemetry processing system as part of the Mobile Ground Telemetry Station (MGTS) program. The MGTS program's goals are to develop a mission-dedicated telemetry system to supplement current test range capabilities by receiving, processing and recording multiple data streams, sometimes exceeding 10 Mbps. The system will support airborne and suborbital vehicles as well as customized satellite downlinks designed for spacecraft bus State-of-Health monitoring and sensor payload observations. Autonomy and off-road capabilities are also important factors since some of the operations envisioned require deployment to remote field locations where no telemetry processing capabilities currently exist to support the unique data handling requirements. The Phillips Laboratory has completed, with support from Wyle Laboratories and Systems Engineering and Management Company (SEMCO), a "proof-of-concept" mobile telemetry processing system referred to as MGTS #2. Demonstration of the system has been accomplished with the successful deployment and operational support provided to both BMDO's Lightweight Exo-Atmospheric Projectile (LEAP) sub-orbital missions and Miniature Sensor Technology Integration (MSTI) satellite program. MGTS #2 has deployed and is scheduled for further deployment to various operating sites including: White Sands Missile Range (WSMR), NM; Air Force Flight Test Center (AFFTC), Edwards AFB, CA; Vandenberg AFB, CA; and NASA's Wallops Island Flight Facility, VA. While deployed MGTS #2 processes, records and rapidly distributes the critical mission telemetry data conforming to both IRIG and SGLS standards. This paper will describe the evolution of the MGTS program, current hardware configurations and the various mission scenarios that have been supported by the MGTS team.
38
Li, Mingmei, and Qing Guo. "A CELLULAR PHONE-CENTRIC MOBILE NETWORK ARCHITECTURE FOR WIRELESS SMALL SATELLITE TELEMETRY SYSTEM." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605355.
Full textAbstract:
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaThis paper aims to add the information access capabilities to enable user’s mobile terminals in a wireless small satellite telemetry system. The cellular phone-centric mobile network architecture provides wireless communication link; telemetry information is provided to users in a highly personalized form according to the end-user’s range. We choose a reference system-level model of network architecture and compare its performance with common small satellite telemetry network link; evaluation results derived using a known analytical model. The result of original hypotheses, network architecture’s prototype includes both analytical performance evaluation and simulation techniques, are discussed in detail.
39
Guérin, Alexandre, Guy Lesthievent, Jean-Pierre Millerioux, Jacques Sombrin, Xavier Giraud, Philippe Bellocq, Emmanuel Midan, and Jacques Oster. "Digital Predistortion of Power Amplifier Non-Linearity Applied to CCSDS/DVB-S2 Satellite Telemetry." International Foundation for Telemetering, 2013. http://hdl.handle.net/10150/579579.
Full textAbstract:
ITC/USA 2013 Conference Proceedings / The Forty-Ninth Annual International Telemetering Conference and Technical Exhibition / October 21-24, 2013 / Bally's Hotel & Convention Center, Las Vegas, NVThe CNES (French Space Agency) has studied memoryless predistortion techniques for power amplifier nonlinearity of satellite payload telemetry. These techniques are applied to high order modulations taken from the DVB-S2 standard and the associated CCSDS blue book. An easy-to-implement calibration method was also developed. The predistortion was implemented at two times the symbol rate after Square Root Raised Cosine shaping on a breadboard model of a 16APSK modulator associated to a Solid State Power Amplifier. It allows to reduce the amplifier back-off and thus to increase the power added efficiency for an equivalent signal quality.
40
Lohmeyer, Whitney Quinne. "Data management of geostationary communication satellite telemetry and correlation to space weather observations." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79333.
Full textAbstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2013.This electronic version was submitted and approved by the author's academic department as part of an electronic thesis pilot project. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from department-submitted PDF version of thesis.
Includes bibliographical references (p. 86-89).
To understand and mitigate the effects of space weather on the performance of geostationary communications satellites, we analyze sixteen years of archived telemetry data from Inmarsat, the UK-based telecommunications company, and compare on-orbit anomalies with space weather observations. Data from multiple space weather sources, such as the Geostationary Operational Environmental Satellites (GOES), are compared with Inmarsat anomalies from 1996 to 2012. The Inmarsat anomalies include 26 solid-state power amplifier (SSPA) anomalies and 226 single event upsets (SEUs). We first compare SSPA anomalies to the solar and geomagnetic cycle. We find most SSPA anomalies occur as solar activity declines, and when geomagnetic activity is low. We compare GOES 2 MeV electron flux and SSPA current for two weeks surrounding each anomaly. Seventeen of the 26 SSPA anomalies occur within two weeks after a severe space weather event. Fifteen of these 17 occur after relativistic electron events. For these fifteen, peak electron flux occurs a mean of 8 days and standard deviation of 4.7 days before the anomaly. Next, we examine SEUs, which are unexpected changes in a satellite's electronics, such as memory changes or trips in power supplies. Previous research has suggested that solar energetic protons (SEPs) cause SEUs. However, we find that SEUs for one generation of satellites are uniformly distributed across the solar cycle. SEUs for a second generation of satellites, for which we currently have only half a solar cycle of data, occur over an order of magnitude more often than the first, even during solar minimum. This suggests that SEPs are not the primary cause of SEUs, and that occurrence rates differ substantially for different satellite hardware platforms with similar functionality in the same environment. These results will guide design improvements and provide insight on operation of geostationary communications satellites during space weather events.
by Whitney Quinne Lohmeyer.
S.M.
41
Chapman, Demian D. "From Microsatellite DNA Profiling to Satellite Telemetry: Integrating Behavioral Ecology Into Shark Conservation." NSUWorks, 2007. http://nsuworks.nova.edu/occ_stuetd/61.
Full textAbstract:
Chapter 1
The mating systems of two annually-reproducing hammerhead sharks (scalloped hammerhead Sphyrna lewini, bonnethead Sphyrna tiburo) were investigated by genetically-profiling 82 litters (902 embryos). Unlike three biennially-reproducing shark species previously studied that are polygynandrous, genetic monogamy was common in females of both of these hammerheads (S. lewini [70.6 % of litters], S.tiburo [85.4-62.5%]), suggesting a polygynous mating system overall. These mating system characteristics suggest that hammerheads may have lower ratios of effective to census population sizes than polygynandrous sharks, adding to conservation concerns for these species. Results suggest that female mating behavior may play a more limited role in determining the population-level of multiple paternity than currently envisioned in sharks, with the interplay between male mating tactics and female reproductive periodicity (biennial or annual) perhaps being more influential. Two lines of evidence infer that multiple paternity is associated with larger females in S. tiburo: mothers of multi-sired litters are significantly larger than mothers of single paternity litters in West Florida and the frequency of multiple paternity is significantly higher in South Carolina, where females are larger. Large females may therefore produce larger, more genetically-diverse litters in some shark species and could contribute disproportionately to recruitment and population genetic diversity, increasing their importance from a conservation perspective.
Chapter 2
Although most shark species have relatively small body-sizes as adults (<100 cm total length), little is known about the genetic population structure and lineage diversification of small sharks. Mitochondrial control region and nuclear internal transcribed spacer 2 sequences combined with three independent microsatellite loci all concordantly show that the diminutive hammerhead shark Sphyrna tiburo (bonnethead) consists of two highly divergent lineages from South Carolina, U.S.A. to Belize, a coastal distance of less than 6000 km. One lineage was restricted to Belize, while the other was almost completely restricted to five North American sampling sites (pairwise CR ΦST = 0.891-0.915, microsatellite Fst=0.277-0.319). This represents the highest degree of population structure recorded concordantly at both mitochondrial and nuclear loci in a shark along a continuous coastline. Regional measures of population structure and genetic divergence in this diminutive hammerhead shark mirror but exceed values obtained for larger shark species over the same sampling range and are comparable to those observed in a larger congener on a global scale. Direct evidence of interbreeding between these lineages indicates that speciation has not yet occurred. Gene-flow was generally high among North American populations, but there was evidence that female-mediated gene flow is moderately restricted between subtropical Florida Bay and higher latitude populations, suggesting that changes in latitude and climate regime may help drive population genetic differentiation in this species. This study is the second to reveal unexpectedly high lineage diversification within Atlantic hammerhead sharks, which suggests that further genetic surveys are required to fully understand and conserve hammerhead shark biodiversity in this region.
Chapter 3
Dried fins from the scalloped hammerhead shark (Sphyrna lewini) are highly-valued for utilization in the Asian delicacy shark-fin soup. While global landings of this species annually measure in the millions to supply this market, Western Atlantic populations have collapsed and are now considered to be endangered. This study reveals that Western Atlantic S. lewini comprise at least three distinct management units that will be reliant on intrinsic reproduction rather than immigration for rebuilding (MU’s: U.S.A., Central American Caribbean and Brazil; overall ΦST=0.64). These MU’s are sufficiently differentiated from each other, eastern Atlantic and Indo-Pacific stocks to use mixed-stock analysis (MSA) to better understand the impact of the fin trade on sharks of this region. Stock of origin was determined for 57 Hong Kong market-derived S. lewini dried fins, revealing that contemporary trade is globally-sourced with a substantial presence of fins from imperiled Western Atlantic stocks. Results are used to formulate regional management recommendations and to develop monitoring strategies for the Asian fin trade that could dramatically improve global conservation of S. lewini and serve as a template for other sharks impacted by this trade.
Chapter 4
Longline sampling (83 sets) supplemented with 6 pop-off archival tag (PAT) deployments were used to characterize vertical habitat use by Caribbean reef sharks, Carcharhinus perezi, at Glover’s reef atoll, Belize. Longline CPUE in two shallow reef habitats (lagoon < 18m depth, fore-reef < 40 m depth) underwent significant nocturnal increases for sharks larger than 110 cm total length (TL) but not for smaller sharks. Nocturnal CPUE of small sharks increased in the lagoon and decreased on the fore-reef, suggesting movements to avoid larger conspecifics. PAT deployments (7-20 days) indicate that large C. perezi generally increased the amount of time they spent in the upper 40 m of the water column during the night and have a much wider depth and temperature range than previously thought (0 to 356 m, 31-12.4oC). The wide vertical range of this top-predator reveals ecological coupling of deep and shallow reef habitats and has implications for place-based conservation.
Chapter 5
Marine Protected Areas (MPAs) are increasingly advocated for the restoration and conservation of coral reef ecosystems, yet given the typically small size of most no-take MPAs it remains unknown how effective this strategy will be for roving, top-level predators such as sharks. Movement patterns of Caribbean reef sharks, Carcharhinus perezi, tagged with coded acoustic transmitters were monitored with an array of up to 22 underwater receivers from May 2004 to October 2006 at Glover’s Reef Marine Reserve, a zoned MPA in Belize. Thirty one tagged sharks ranged in size from 80-215 cm total length [TL], spanning young-of-the-year to mature specimens of both genders. Twenty five of these sharks provided data for more than one week after tagging. Individual sharks were detected within the array on from 5 to 464 days and all but four were predominantly detected on the receiver(s) nearest their original capture. Although daily movements of up to 20-50 km were documented by large sharks (>110 cm TL), most individuals were detected at Glover’s Reef on an almost daily basis throughout the year and appear to be residents of this reef system. Small sharks were documented to be residents for at least six months. The daily dispersal ranges and distribution of sharks tracked in this study suggest that typically small-sized no-take zones will be of limited value for reef shark conservation. However, the long-term residency and site-fidelity of large and small C. perezi to this reef system in its entirety indicates that nesting this no-take zone within a broader ocean zoning plan tailored to protect large roving predators achieves the scale necessary to provide meaningful protection for these ecologically important, threatened predators.
42
Andzik, Rob. "Using the Ground Equipment Monitoring Service (GEMS) for Satellite Telemetry & Command Systems." International Foundation for Telemetering, 2008. http://hdl.handle.net/10150/606173.
Full textAbstract:
ITC/USA 2008 Conference Proceedings / The Forty-Fourth Annual International Telemetering Conference and Technical Exhibition / October 27-30, 2008 / Town and Country Resort & Convention Center, San Diego, CaliforniaAs satellite ground systems migrate toward network-centric, distributed architectures, controlling remote ground equipment becomes a central issue. While many protocols and approaches exist that address remote control and status, there is little agreement on a common solution. Device vendors and system integrators commonly find themselves integrating multiple protocols to meet a wide range of requirements. Technologies change and new protocols evolve that result in yet more options to be considered. However, the fundamental aspects of device control remain constant. The Ground Equipment Monitoring Service (GEMS) seeks to define a standard model for device control independent of the underlying protocols and technologies. Using this approach, a wide range of protocols can be mapped to the GEMS model. Systems using different protocols can then rely on the common mapping and utilize translators to connect heterogeneous components with little integration costs. This paper describes the state of the specification and potential uses of the GEMS specification in Satellite Ground Systems. Interactions between the GEMS specification and other standards such as the CCSDS SLE Complex Management services are also presented.
43
Lide, David A., and Stephen Talabac. "The Use of Digital Signal Processors in Front-End Weather Satellite Telemetry Processing." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/608545.
Full textAbstract:
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaThis paper discusses the use of DSP technology in the embedded real time ingest and pre-processing of weather satellite data. Specifically, case studies are presented in the use of Texas Instrument TMS 320 processors as front-end handlers of GOES MODE AAA and GOES GVAR data formats.
44
Stone, Christopher E., Keith D. Flint, and Gregory P. Mathis. "THE PHILLIPS LABORATORY’S MOBILE GROUND TRACKING STATION (MGTS)." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608411.
Full textAbstract:
International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, NevadaPhillips Laboratory's Space Experiments Directorate (PL/SX) is operating and upgrading the laboratory's premier transportable satellite tracking station, the Mobile Ground Tracking Station (MGTS) program. MGTS supports orbital, suborbital, and aircraft missions as a range system capable of processing and recording multiple data streams. MGTS receives, processes, displays, and records satellite state-of-health data, infrared images in a variety of wavelengths, video data, and state vector solutions based on IR returns from the Miniature Sensor Technology Integration (MSTI) satellite program. The program has began in 1990 under BMDO sponsorship, with the intent to supplement existing test ranges with more flexibility in range operations. Wyle Laboratories and Systems Engineering and Management Company (SEMCO) provided the technical expertise necessary to create the first MGTS system. Autonomy and off-road capability were critical design factors, since some of the operations envisioned require deployment to remote or hostile field locations. Since inception, MGTS has supported the Lightweight Exo-Atmospheric Projectile (LEAP) sub-orbital missions, the MSTI satellite program, and Air Force wargame demonstrations. In pursuit of these missions, MGTS has deployed to White Sands Missile Range (WSMR), NM; Air Force Flight Test Center (AFFTC), Edwards AFB, CA; Vandenberg AFB, CA; Falcon AFB, CO; and NASA's Wallops Island Flight Facility, VA, to receive critical mission telemetry data conforming to both IRIG and SGLS standards. This paper will describe the evolution of the MGTS program, current hardware configurations and past and future mission scenarios for the MGTS team.
45
Mauldin, Kendall. "SATELLITE GROUND STATION SECURITY USING SSH TUNNELING." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605566.
Full textAbstract:
International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, NevadaAs more satellite ground station systems use the Internet as a means of connectivity, the security of the ground stations and data transferred between stations becomes a growing concern. Possible solutions include software-level password authentication, link encryption, IP filtering, and several others. Many of these methods are being implemented in many different applications. SSH (Secure Shell) tunneling is one specific method that ensures a highly encrypted data link between computers on the Internet. It is used every day by individuals and organizations that want to ensure the security of the data they are transferring over the Internet. This paper describes the security requirements of a specific example of a ground station network, how SSH can be implemented into the existing system, software configuration, and operational testing of the revised ground network.
46
Haefner, Dennis, Andreas Kimpe, and Peter Turner. "New Mobile Telemetry Ground Station for Sounding Rocket, Stratospheric Balloon, and LEOP Satellite Support." International Foundation for Telemetering, 2014. http://hdl.handle.net/10150/577491.
Full textAbstract:
ITC/USA 2014 Conference Proceedings / The Fiftieth Annual International Telemetering Conference and Technical Exhibition / October 20-23, 2014 / Town and Country Resort & Convention Center, San Diego, CAThe new telemetry station of the DLR Mobile Rocket Base (MORABA) is a fully equipped commanding, tracking, and data acquisition ground station developed particularly for sounding rockets and stratospheric research balloons. Furthermore, it serves as a support system for satellite missions during launch and early orbit phases. Its primary design goal was maximum mobility and versatility. Hence, the station is optimized for easy transportation in standard 20-foot ISO containers, fast setup, and highest independence regarding location and infrastructure. It can be operated at tropical temperatures and arctic conditions alike. The TT&C station comprises two independent antenna systems made by ORBIT Communication Systems. The main antenna features a segmented five-meter parabolic dish on a very fast elevation-over-azimuth pedestal and an S-band tracking feed with supplementary acquisition aid. The feed supports simultaneous uplink and downlink in the S-band, both with polarization diversity for improved signal quality even under adverse conditions. A small 1.5-meter secondary antenna with autonomous tracking equipment provides backup to the main system for fast target acquisition and wide angle tracking capability.
47
Reiner, Florian. "Simulation of Scientific VHF Telemetry Data for the French Payload of the SVOM Satellite." Thesis, Luleå tekniska universitet, Rymdteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-76658.
Full textAbstract:
The Space Variable Objects Monitor (SVOM) is a future French-Chinese satellite mission which is dedicated to the observation and characterisation of Gamma Ray Bursts (GRBs). When a GRB is detected by the satellite, the position and initial characterisation data are transmitted to ground via a VHF telemetry link, in order to trigger immediate follow-up observations of the transient GRB afterglow by ground-based telescopes. To optimise the prioritisation of this telemetry flow in various scenarios, detailed simulations of the VHF telemetry are required. In this thesis, a new telemetry simulator was thus developed: the MXT VHF Data Simulator. This simulator generates all VHF messages of the Micro X-ray Channel Telescope (MXT) instrument that would be expected during a typical operational scenario. Each message is constructed byte by byte, with the required data formats, encodings and packet structures as specified by the SVOM telemetry standards and the MXT VHF TM specification database. To generate the scientific packet contents several approaches were combined. An existing camera frame simulator, developed at the LAL institute, was modified to simulate raw photon data for the given scenario, generating a set of binary camera frame files which is then parsed and integrated by the MXT VHF Data Simulator. MXT instrument scientists provided an example GRB profile with the temporal evolution of certain GRB parameters. In addition, several parameters were simulated manually, with an effort to achieve as realistic contents as reasonably possible, and in coordination and discussion with the MXT instrument scientists and software engineers. The output of the simulation consists of a set of MXT VHF telemetry files in binary and CSV formats. To verify the correct formatting and contents of the data, the files were validated using the internal CNES telemetry analysis framework PrestoTools. This analysis confirmed correct formatting and encodings in accordance with the telemetry specifications, as well as the expected data in the packet contents. Finally, the resulting data was integrated into the CNES VHF Simulator, and an analysis of a full VHF telemetry scenario with all four instruments was performed for the Data Challenge 1 (DC1) systems test scenario.
48
Spielman, David R. "The Use of Open Architecture Systems in Cost Reduced Satellite Telemetry & Control Stations." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611644.
Full textAbstract:
International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, CaliforniaA comprehensive examination of the market demands for cost reduced satellite telemetry & control stations will be presented. These systems are implemented using flexible, open architecture-based high performance real-time systems. The trend for combining telemetry monitoring of satellite data with closed-loop satellite command and control functions will be presented. This combined functionality opens up the possibilities for completely integrated, reduced cost satellite control systems. The market forces driving the demand for this integrated functionality include the broadening of non-military satellite applications, the widening international deployment of commercial satellites and the accompanying drive toward decentralized satellite control. The major requirements for the telemetry processing and command & control functionality of the integrated, reduced cost satellite control system will be presented. These requirements include: full real-time performance for processing telemetry data; flexible architecture for the incorporation of a wide range of I/O devices; capability of performing real-time, closed-loop control based on conditions in the telemetry data; user friendly development environments for application-specific customization of the system; and low system costs with the capability of indigenous support. The divergent requirements of performance, flexibility and price of these integrated, reduced cost satellite control systems is made possible via the use of open architecture building blocks that include standard VME boards combined with specialized real-time software drivers and user oriented, flexible Graphical User Interface (GUI) software.
49
Haws, Jordan. "Command, Control and Telemetry for Utah State University's Scintillation Prediction Observation Research Task (SPORT) Mission." DigitalCommons@USU, 2020. https://digitalcommons.usu.edu/etd/7711.
Full textAbstract:
The Scintillation Prediction Observation Research Task (SPORT) is a joint United States of America (USA) and Brazil small satellite mission to address the further under-standing of the preconditions leading to equatorial plasma bubbles. Utah State University (USU) is supplying four instruments towards this SPORT mission. These four instruments will allow measurements of the electric field and plasma density in the ionosphere which will help understand what gives rise to plasma bubbles in the ionosphere.
This thesis will discuss the command, control, and telemetry communications needed to operate the SPORT USU instruments. It will cover an overview of the instruments involved, how the instruments are controlled specifically, what commands were needed to run the instruments, what telemetry data was produced and how it was transmitted to the ground station, and how the data is made useful. The design process, challenges, and solutions to this system and project will also be discussed.
50
Rogers, Rodney, James P. LeBlanc, David E. Ryerson, and James Snell. "Using Commercial Global Personal Communication System for a Global Test Range." International Foundation for Telemetering, 1999. http://hdl.handle.net/10150/608521.
Full textAbstract:
International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, NevadaThis paper investigates the feasibility of using commercial satellite constellations to relay telemetry data from flight test vehicles as part of a Global Test Range. The use of a commercial satellite constellation would provide an augmented capability to the test range, providing near real-time data to the data reduction site and test range control at reasonable cost. This includes an analysis of current and proposed commercial communication satellite constellations to determine if any of them would fulfill the needs of a telemetry test range. Preliminary assessment of the communication link between a flight vehicle and the satellite constellations is performed.