Relevant bibliographies by topics / Telemetria Satellitare / Journal articles
To see the other types of publications on this topic, follow the link: Telemetria Satellitare.

Journal articles on the topic 'Telemetria Satellitare'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles 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 journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Suhermanto. "PENGUJIAN MODUL PENGOLAH DATA TELEMETRI LAPAN-A3/IPB UNTUK MENGHASILKAN PRODUK LEVEL-0 (THE TESTOF LAPAN-A3/IPB TELEMETRY DATA PROCESSOR MODULE TO PRODUCE LEVEL-0 PRODUCT)." Jurnal Teknologi Dirgantara 14, no. 2 (July 21, 2017): 125. http://dx.doi.org/10.30536/j.jtd.2016.v14.a2510.

Full text
Abstract:
Telemetry data processing modulis a software for converting the LAPAN-A3/IPB telemetry data into raw sensor data (level-0 product). Telemetry data output from the High Data Rate Modulator-demodulator (HDRM) becomes an input for telemetry data processor, which has entered its setup parameter. The objective of the research is to test LAPAN-A3/IPB telemetry data processor implementation. The development and processing of telemetry data have been performed on a desktop computer that are divided into two stages, data decoding and data decomposition.The performance of the software has been tested using eight samples of raw-data, consisted of multi-spectral and camera matrix data obtained before and after the launch of the satellite. The test results showed, there were no missing telemetry data frames and damaged codeword in the process of decoding.Data on missing multi-spectral lines and data on camera matrix frame lost in the process of decomposition were not found. It was concluded that the overall performance of the test result was that the system used was not able todecode, decompose, display quick-look LISA, or extractcamera matrix data in real-time.To perform as required, the computer performance needed to be increased up to 8 times. From this process, approximately 92% of CPU time were used for decoding and only about 8% were for the decomposition, extraction of data LISA, or extraction of data camera matrix.Improvement attempt by changing the word-size of 32bit processors into 64bit, did not give significant results and was only able to improve the processing speed of 8.1%. Abstrak:Modul pengolah data telemetri adalah softwareuntuk mengubah data telemetri LAPAN-A3/IPB menjadi data sensor yang masih mentah (produk level-0). Data telemetri keluaran dari perangkatHigh Data Rate Modulator-Demodulator (HDRM)menjadi masukan bagi pengolah data telemetri, yang parameter set-upnyatelah dimasukkan. Tujuan penelitian ini adalah untuk menguji implementasi pengolahan data telemetri satelit LAPAN-A3/IPB. Pembangunan dan pengolahan data telemetri telah dilakukan di komputer desktop yang dibagi dalam dua tahap, yaitu pendekodean data dan dekomposisi data. Unjuk kerja software telah diuji menggunakan delapan sampel raw-data, terdiri atas data multi-spektral dan matrik kamera yang diperoleh sebelum dan sesudah peluncuran satelit. Hasil uji memperlihatkan, tidak ditemukan frame data telemetri yang hilang dan codeword yang rusakpada proses pendekodean data. Juga tidak ditemukan data pada larikmulti-spektralyang hilang maupun data pada matrik kamera yang hilang pada proses dekomposisi. Dari uji kinerja secara keseluruhan didapat hasil bahwa sistem yang digunakan tidak mampu melakukan dekoda, dekomposisi, menampilkan quick-lookLISA,atau ekstraksi data matrik kamera secara real-time.Perlupeningkatan kinerja komputer hingga 8 kali lebih baik.Dari proses tersebut, sekitar 92% CPU time dipakai untuk pendekodean data dan hanya sekitar 8% untuk dekomposisi, ekstraksi data LISA,atau ektraksi data matrik kamera. Upaya perbaikan yang dilakukan dengan mengubah word-size prosesor dari 32bit menjadi 64bit hasilnya tidak signifikan dan hanya mampu memperbaiki kecepatan proses 8,1%.
APA, Harvard, Vancouver, ISO, and other styles
2

Džunda, Milan, Natália Kotianová, Peter Dzurovčin, Stanislav Szabo, Edina Jenčová, Iveta Vajdová, Peter Koščák, Dorota Liptáková, and Peter Hanák. "Selected Aspects of Using the Telemetry Method in Synthesis of RelNav System for Air Traffic Control." International Journal of Environmental Research and Public Health 17, no. 1 (December 27, 2019): 213. http://dx.doi.org/10.3390/ijerph17010213.

Full text
Abstract:
Accuracy is an important factor in air traffic management which is why high requirements are necessary for each navigation system. The aim of this article is to describe the principles of the RelNav system and telemetry and their accuracy. We present the algorithms of the relative navigation system, which could be used for air traffic control in the case of the unavailability of satellite navigation system signals. This article sums up the different positioning methods, and deals with the accuracy of the relative navigation system (RelNav). Furthermore, the article considers the factors that influence the positioning accuracy. For this task, a computer simulation was created to evaluate the accuracy of the telemetric method. Next, we discuss the principles of telemetry and algorithms for calculating the position of the flying object (FO).
APA, Harvard, Vancouver, ISO, and other styles
3

French, John. "Wildlife telemetry by satellite." Endeavour 18, no. 1 (January 1994): 32–37. http://dx.doi.org/10.1016/0160-9327(94)90118-x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Zhang, Ke, Haixu Jiang, and Jingyu Wang. "A Sliding Window Optimal Tracking Differentiator Filtering Method for Satellite Telemetry Data." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 38, no. 3 (June 2020): 515–22. http://dx.doi.org/10.1051/jnwpu/20203830515.

Full text
Abstract:
The initial satellite telemetry data acquired by ground stations usually contain noise and outlier interference. In order to ensure the accurate analysis of satellite status, the telemetry data need to be filtered. In this paper, a sliding window optimal tracking differentiator filtering (SWOTDF) method for satellite telemetry data is proposed. Aiming at the problem of parameter selection during the filtering of the optimal tracking differentiator, the amplitude-frequency characteristics of the maximum tracking differentiator are analyzed by sine sweep frequency method, and the mapping relationship between tracking factors and filtering effects is established. On this basis, the telemetry data are divided by sliding windows, and the relationship between local stability of data in each window and tracking factors is further analyzed. The calculation method of local data tracking factor is given to realize dynamic optimal tracking differentiator filtering of telemetry data in each window. Experimental results show that the SWOTDF method can effectively avoid the limitations of traditional digital filters in processing nonlinear telemetry data, and can effectively filter out noise and outliers in satellite telemetry data.
APA, Harvard, Vancouver, ISO, and other styles
5

Mykhatskyi, Oleksii. "INFORMATIVE SAFETY OF UNMANNED AVIATION SYSTEMS RADIO COMMUNICATION CHANNELS." Cybersecurity: Education, Science, Technique, no. 1 (2018): 56–62. http://dx.doi.org/10.28925/2663-4023.2018.1.5662.

Full text
Abstract:
An analysis of navigation and command-telemetric radio channels is used for exploitation of unmanned aviation systems are proceeds. The classification of radio channels vulnerability is tied to the modes of unmanned aerial vehicles control and their safe exploitation key terms. The criteria of flight mission feasibility and applicability of the different control modes are set in the conditions of violation at the radio channels data communication. The signs of successful flight task processing are the aircraft returning and landing to the set point, absence of distortions or rejections of preset flight trajectory, regular payload functioning. Each of these criteria can be broken when hindrances and interferences in the radio channels are present. Composition and setting functions of unmanned aerial vehicles control radio channels depend on the control mode. In-process distinguished manual control mode from earth in the zone of visual control, manual control mode via the feedback video channel, automatic control mode by an aircraft by on-board autopilot with constantly operating bilateral radio channel of telemetry and automatic control mode by the commands without permanent telemetric control. The first two modes envisage the permanent participating of the controlled from ground pilot in the control loop and due to it does not depend on suppression of satellite navigation radio channel. Suppression of radio management channels for these modes usually ends with abnormal finishing the flight. Hindrances and suppression of radio channels at automatic control modes can result in deviation of trajectory from the preset one or unsatisfactory work of the payload. Conclusions contain newest further suggestion on the unmanned aerial systems radio channels security. In the modes of visual hand control the probability of extraneous interference can be diminished by directed antennas. To increase the security at the automatic flight modes it offers to use the satellite navigation data authenticity analyzer with permanent comparison between the satellite data and calculated navigation data.
APA, Harvard, Vancouver, ISO, and other styles
6

Yin, Hong, Shu Qiang Yang, Guo Ming Li, Ping Yin, and Song Chang Jin. "A Research of MM-SVM Technique for Fault Diagnosis." Applied Mechanics and Materials 556-562 (May 2014): 2633–37. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2633.

Full text
Abstract:
With the satellite development of our country, higher accuracy and stability are requires, which makes the control systems becoming more complex and requiring more telemetry parameters. Data mining techniques do not consider the physical relationship between the various components, but use of satellite telemetry parameters of the satellite states the purpose of fault identification. In this paper, we give a model based on multiple support vector machines (MM-SVM) technology satellite fault diagnosis method. The experiment shows that our method is effective in satellite equipment fault diagnosis
APA, Harvard, Vancouver, ISO, and other styles
7

Cui, Zhen, Ye Ji, Bin Chen, and Yang Yang. "A Fast Estimation Method for Satellite in Orbit Management." MATEC Web of Conferences 316 (2020): 04007. http://dx.doi.org/10.1051/matecconf/202031604007.

Full text
Abstract:
The management of satellites in orbit requires accurate and rapid processing to minimize the impact of failures. Especially for fault handling involving energy security, the real-time nature of the process plays a decisive role. This paper proposes a fast estimation method based on satellite telemetry data. Through the analysis of the shape of the telemetry curve, the geometric method, the correlation analysis of the telemetry data on the satellite, or the physical principles, the required parameters are quickly obtained to facilitate rapid emergency processing. This method is applied to satellite in-orbit management, which can greatly improve the real-time performance of fault processing, and has good engineering practical value.
APA, Harvard, Vancouver, ISO, and other styles
8

Scribner, Kim T., Richard A. Malecki, Bruce D. J. Batt, Rainy L. Inman, Scot Libants, and Harold H. Prince. "Identification of Source Population for Greenland Canada Geese: Genetic Assessment of a Recent Colonization." Condor 105, no. 4 (November 1, 2003): 771–82. http://dx.doi.org/10.1093/condor/105.4.771.

Full text
Abstract:
AbstractWe used microsatellite markers, mitochondrial DNA (mtDNA), and satellite telemetry to infer the North American geographic origin and racial composition of Canada Geese (Branta canadensis) from newly colonized habitats in Greenland. Using likelihood-based assignment tests we determined that multilocus genotypes of Greenland Canada Geese were consistent with the hypothesis of origin from birds of the Atlantic Population breeding around southern Ungava Bay, Quebec, Canada. The Atlantic Population, based on previous studies of seasonal movements and demography, appeared to be reproductively isolated from the North Atlantic Population. We found that these two populations were genetically differentiated based on microsatellite allele and mtDNA haplotype frequencies. Findings of high levels of genetic discordance among North American breeding populations are consistent with migratory movements, despite high levels of distributional overlap of birds from the North Atlantic and Atlantic Populations during migration and on wintering areas. Findings based on genetic markers were concordant with satellite telemetry conducted during spring migration, which showed that birds destined for Greenland migrate through the southern Ungava Bay breeding colony. Genetic differences among these populations are useful for addressing other issues of ecological or management concern.Identificación de la Población Fuente de los Gansos Branta canadensis de Groenlandia: Evaluación Genética de una Colonización RecienteResumen. Utilizamos marcadores microsatélites, ADN mitocondrial (ADNmt), y telemetría de satélite para inferir el origen geográfico en Norte América y la composición racial de los gansos Branta canadensis en hábitats recientemente colonizados en Groenlandia. Mediante pruebas de asignación basadas en verosimilitud, determinamos que los genotipos multilocus de los gansos de Groenlandia eran consistentes con la hipótesis de origen de aves de la población del Atlántico que se reproduce alrededor del sur de Ungava Bay, Quebec, Canadá. Con base en estudios previos de movimientos estacionales y demografía, la población del Atlántico pareció estar aislada reproductivamente de la población del Atlántico Norte. Encontramos que estas dos poblaciones son genéticamente diferentes en términos de frecuencias alélicas de microsatélites y haplotipos de ADNmt. El hallazgo de altos niveles de discordancia genética entre poblaciones reproductivas norteamericanas es consistente con los movimientos migratorios, a pesar de los altos niveles de superposición de las distribuciones de aves de las poblaciones del Atlántico y el Atlántico Norte durante la migración y en las áreas de invernada. Los resultados basados en los marcadores genéticos concordaron con la telemetría satelital llevada a cabo durante la migración de primavera, la cual mostró que las aves con destino a Groenlandia migran a través del sur de la colonia reproductiva de Ungava Bay. Las diferencias genéticas entre estas poblaciones son útiles para abordar otros asuntos de interés ecológico o de manejo.
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, Tao, and Yong Sheng Gui. "Telemetry Data Acquisition and Analysis in Integrated Baseband System Based on TCP/IP Protocol." Applied Mechanics and Materials 195-196 (August 2012): 1175–79. http://dx.doi.org/10.4028/www.scientific.net/amm.195-196.1175.

Full text
Abstract:
This paper briefly introduced the integrated Command Ranging & Telemetry (CRT) baseband system of a satellite TT&C ground station, and a software was developed with C++ Builder 6.0 to acquire and store the important telemetry data. It effectively resolved the problems of data acquisition and storage for important parameters from baseband system, and it was applied to fault analysis and diagnosis of satellite signals.
APA, Harvard, Vancouver, ISO, and other styles
10

Keating, Kimberly A., Wayne G. Brewster, and Carl H. Key. "Satellite Telemetry: Performance of Animal-Tracking Systems." Journal of Wildlife Management 55, no. 1 (January 1991): 160. http://dx.doi.org/10.2307/3809254.

Full text
APA, Harvard, Vancouver, ISO, and other styles
11

Olson, Bridget E., Kimberly A. Sullivan, and Adrian H. Farmer. "Marbled Godwit migration characterized with satellite telemetry." Condor 116, no. 2 (May 2014): 185–94. http://dx.doi.org/10.1650/condor-13-024.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Smith, Craig S., Jonathan H. Epstein, Andrew C. Breed, Raina K. Plowright, Kevin J. Olival, Carol de Jong, Peter Daszak, and Hume E. Field. "Satellite Telemetry and Long-Range Bat Movements." PLoS ONE 6, no. 2 (February 16, 2011): e14696. http://dx.doi.org/10.1371/journal.pone.0014696.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Stewart, Brent S., Stephen Leatherwood, Pamela K. Yochem, and Mads-Peter Heide-Jorgensen. "HARBOR SEAL TRACKING AND TELEMETRY BY SATELLITE." Marine Mammal Science 5, no. 4 (October 1989): 361–75. http://dx.doi.org/10.1111/j.1748-7692.1989.tb00348.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Chen, Junfu, Xiaodong Zhao, and Dechang Pi. "A deep auto-encoder satellite anomaly advance warning framework." Aircraft Engineering and Aerospace Technology 93, no. 6 (July 16, 2021): 1085–96. http://dx.doi.org/10.1108/aeat-09-2019-0185.

Full text
Abstract:
Purpose The purpose of this paper is to ensure the stable operation of satellites in orbit and to assist ground personnel in continuously monitoring the satellite telemetry data and finding anomalies in advance, which can improve the reliability of satellite operation and prevent catastrophic losses. Design/methodology/approach This paper proposes a deep auto-encoder (DAE) satellite anomaly advance warning framework for satellite telemetry data. Firstly, this study performs grey correlation analysis, extracts important feature attributes to construct feature vectors and builds the variational auto-encoder with bidirectional long short-term memory generative adversarial network discriminator (VAE/BLGAN). Then, the Mahalanobis distance is used to measure the reconstruction score of input and output. According to the periodic characteristic of satellite operation, a dynamic threshold method based on periodic time window is proposed. Satellite health monitoring and advance warning are achieved using reconstruction scores and dynamic thresholds. Findings Experiment results indicate DAE methods can probe that satellite telemetry data appear abnormal, trigger a warning before the anomaly occurring and thus allow enough time for troubleshooting. This paper further verifies that the proposed VAE/BLGAN model has stronger data learning ability than other two auto-encoder models and is sensitive to satellite monitoring data. Originality/value This paper provides a DAE framework to apply in the field of satellite health monitoring and anomaly advance warning. To the best of the authors’ knowledge, this is the first paper to combine DAE methods with satellite anomaly detection, which can promote the application of artificial intelligence in spacecraft health monitoring.
APA, Harvard, Vancouver, ISO, and other styles
15

Jin, Weihua, Bo Sun, Zhidong Li, Shijie Zhang, and Zhonggui Chen. "Detecting Anomalies of Satellite Power Subsystem via Stage-Training Denoising Autoencoders." Sensors 19, no. 14 (July 22, 2019): 3216. http://dx.doi.org/10.3390/s19143216.

Full text
Abstract:
Satellite telemetry data contains satellite status information, and ground-monitoring personnel need to promptly detect satellite anomalies from these data. This paper takes the satellite power subsystem as an example and presents a reliable anomaly detection method. Due to the lack of abnormal data, the autoencoder is a powerful method for unsupervised anomaly detection. This study proposes a novel stage-training denoising autoencoder (ST-DAE) that trains the features, in stages. This novel method has better reconstruction capabilities in comparison to common autoencoders, sparse autoencoders, and denoising autoencoders. Meanwhile, a cluster-based anomaly threshold determination method is proposed. In this study, specific methods were designed to evaluate the autoencoder performance in three perspectives. Experiments were carried out on real satellite telemetry data, and the results showed that the proposed ST-DAE generally outperformed the autoencoders, in comparison.
APA, Harvard, Vancouver, ISO, and other styles
16

Keating, Kim A. "An Alternative Index of Satellite Telemetry Location Error." Journal of Wildlife Management 58, no. 3 (July 1994): 414. http://dx.doi.org/10.2307/3809311.

Full text
APA, Harvard, Vancouver, ISO, and other styles
17

Keating, Kim A. "Mitigating Elevation-Induced Errors in Satellite Telemetry Locations." Journal of Wildlife Management 59, no. 4 (October 1995): 801. http://dx.doi.org/10.2307/3801960.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Weimerskirch, Henri, Matthieu Le Corre, Francis Marsac, Christophe Barbraud, Olivier Tostain, and Olivier Chastel. "Postbreeding Movements of Frigatebirds Tracked with Satellite Telemetry." Condor 108, no. 1 (2006): 220. http://dx.doi.org/10.1650/0010-5422(2006)108[0220:pmoftw]2.0.co;2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Westgate, Andrew J., Andrew J. Read, Tara M. Cox, T. David Schofield, Brent R. Whitaker, and Kurt E. Anderson. "MONITORING A REHABILITATED HARBOR PORPOISE USING SATELLITE TELEMETRY." Marine Mammal Science 14, no. 3 (July 1998): 599–604. http://dx.doi.org/10.1111/j.1748-7692.1998.tb00746.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Braun, Camrin D., Maxwell B. Kaplan, Andrij Z. Horodysky, and Joel K. Llopiz. "Satellite telemetry reveals physical processes driving billfish behavior." Animal Biotelemetry 3, no. 1 (2015): 2. http://dx.doi.org/10.1186/s40317-014-0020-9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Weimerskirch, Henri, Matthieu Le Corre, Francis Marsac, Christophe Barbraud, Olivier Tostain, and Olivier Chastel. "Postbreeding Movements of Frigatebirds Tracked with Satellite Telemetry." Condor 108, no. 1 (February 1, 2006): 220–25. http://dx.doi.org/10.1093/condor/108.1.220.

Full text
Abstract:
Abstract Using satellite telemetry, we studied the postbreeding movements of Great (Fregata minor) and Magnificent Frigatebirds (F. magnificens) at two breeding colonies in the Indian and Atlantic Oceans. After breeding failure, 67% of the birds with satellite transmitters remained on the breeding colonies and continued to perform foraging trips similar to those undertaken while breeding. Two Magnificent Frigatebirds that bred at a colony off the coast of French Guiana moved west along the coast of South America, and one of the two reached Trinidad 1400 km away. One Great Frigatebird moved 4400 km from Europa Island in the Mozambique Channel to the Maldive Islands. It roosted there for at least four months, making foraging trips of up to 240 km, mainly to an area known for its high concentration of tuna. These results show that frigatebirds are able to make rapid and directed long-distance dispersal movements to other colonies or roosting sites, although the majority of birds remain based on breeding colonies.
APA, Harvard, Vancouver, ISO, and other styles
22

Peng, Yi, Qi Han, Fei Su, Xingwei He, and Xiaohu Feng. "Meteorological Satellite Operation Prediction Using a BiLSTM Deep Learning Model." Security and Communication Networks 2021 (June 21, 2021): 1–9. http://dx.doi.org/10.1155/2021/9916461.

Full text
Abstract:
The current satellite management system mainly relies on manual work. If small faults cannot be found in time, it may cause systematic fault problems and then affect the accuracy of satellite data and the service quality of meteorological satellite. If the operation trend of satellite will be predicted, the fault can be avoided. However, the satellite system is complex, and the telemetry signal is unstable, nonlinear, and time-related. It is difficult to predict through a certain model. Based on these, this paper proposes a bidirectional long short-term memory (BiLSTM) deep leaning model to predict the operation trend of meteorological satellite. In the method, the layer number of the model is designed to be two, and the prediction results, which are forecasted by LSTM network as the future trend data and historical data, are both taken as the input of BiLSTM model. The dataset for the research is generated and transmitted from Advanced Geostationary Radiation Imager (AGRI), which is the load of FY4A meteorological satellite. In order to demonstrate the superiority of the BiLSTM prediction model, it is compared with LSTM based on the same dataset in the experiment. The result shows that the BiLSTM method reports a state-of-the-art performance on satellite telemetry data.
APA, Harvard, Vancouver, ISO, and other styles
23

Patmasari, Raditiana, Inung Wijayanto, R. S. Deanto, Y. P. Gautama, and Hurianti Vidyaningtyas. "Design and Realization of Automatic Packet Reporting System (APRS) for Sending Telemetry Data in Nano Satellite Communication System." Journal of Measurements, Electronics, Communications, and Systems 4, no. 1 (June 30, 2018): 1. http://dx.doi.org/10.25124/jmecs.v4i1.1692.

Full text
Abstract:
To communicate with the ground station, nano satellite requires a communication system that serves in real time to regulate the procedure with ground station. One of the missions of nano satellites is the retrieval of telemetry data from sensors that transmitted using APRS technology (Automatic Packet Reporting System). We designed a prototype to monitor sensor by utilizing the APRS. Real-time sensor data was transmitted to monitor through radio using AX.25 protocol. On the transmitter side, an APRS Tracker integrated with a microprocessor ATMEGA 1284P to modulate the AFSK signal. The existence of this AFSK signal is used to transmit and receive telemetry data using handy talky. We use a computer with AGWPE software to demodulate the AFSK signal and UI-View32 to show the telemetry data. The results showed that the telemetry data can be displayed on the receiver side and acquired in real time. The accuracy of temperature sensor received by the receiver is 92.97%, and humidity sensor is 90.57%. There was a delay of 1 second for the reception of telemetry data directly.
APA, Harvard, Vancouver, ISO, and other styles
24

Martell, Mark S., Charles J. Henny, Peter E. Nye, and Matthew J. Solensky. "Fall Migration Routes, Timing, and Wintering Sites of North American Ospreys as Determined by Satellite Telemetry." Condor 103, no. 4 (November 1, 2001): 715–24. http://dx.doi.org/10.1093/condor/103.4.715.

Full text
Abstract:
Abstract Satellite telemetry was used to determine fall migratory movements of Ospreys (Pandion haliaetus) breeding in the United States. Study areas were established along the lower Columbia River between Oregon and Washington; in north-central Minnesota; on Shelter Island, New York; and in southern New Jersey. Seventy-four adults (25 males, 49 females) were tracked from 1995 through 1999. Migration routes differed among populations but not by sex. Western Ospreys migrated through California and to a lesser degree other western states and wintered in Mexico (88%), El Salvador (6%), and Honduras (6%) (25.9°N to 13.0°N and 108.3°W to 87.3°W). Minnesota Ospreys migrated along three routes: (1) through the Central U.S. and then along the east coast of Mexico, (2) along the Mississippi River Valley, then across the Gulf of Mexico, or (3) through the southeastern U.S., then across the Caribbean. East Coast birds migrated along the eastern seaboard of the U.S., through Florida, and across the Caribbean. Midwestern birds wintered from Mexico south to Bolivia (22.35°N to 13.64°S, and 91.75°W to 61.76°W), while East Coast birds wintered from Florida to as far south as Brazil (27.48°N to 18.5°S and 80.4°W to 57.29°W). Dates of departure from breeding areas differed significantly between sexes and geographic regions, with females leaving earlier than males. Western birds traveled a shorter distance than either midwestern or eastern Ospreys. Females traveled farther than males from the same population, which resulted in females typically wintering south of males. Rutas de Migración Otoñales, Coordinación y Sitios de Invernada de Pandion haliaetus Determinados por Telemetría Satelital Resumen. Se utilizó telemetría satelital para determinar los movimientos de migración de otoño de individuos de Pandion haliaetus que nidifican en los Estados Unidos. Las áreas de estudio se establecieron a lo largo del Río Columbia entre Oregon y Washington; en el centro-norte de Minnesota; en la Isla Shelter, Nueva York; y en el sur de Nueva Jersey. Setenta y cuatro adultos (25 machos, 49 hembras) fueron seguidos mediante telemetría desde 1995 hasta 1999. Las rutas de migración se diferenciaron entre poblaciones pero no entre sexos. Los individuos de P. haliaetus del oeste, migraron a través de California y en menor grado a través de otros estados del oeste e invernaron en México (88%), El Salvador (6%) y Honduras (6%) (25.9°N a 13.0°N y 108.3°O a 87.3°O). Las aves de Minnesota migraron a lo largo de tres rutas: (1) a través del los E.E.U.U. centrales y luego a lo largo de la costa este de México, (2) a lo largo del valle del Río Mississippi y luego a través del Golfo de México, o (3) a través del sur de los E.E.U.U. y luego a través del Caribe. Las aves de la costa este, migraron a lo largo de la costa este de los E.E.U.U., por Florida y a través del Caribe. Las aves del medio-oeste, invernaron desde México hacia el sur hasta Bolivia (22.35°N a 13.64°S, y 91.75°O a 61.76°O), mientras que las aves de la costa este invernaron desde Florida hasta tan al sur como Brasil (27.48°N a 18.5°S y 80.4°O a 57.29°O). Las fechas de partida desde las áreas de nidificación difirieron significativamente entre sexos y regiones geográficas, partiendo las hembras antes que los machos. Las aves del oeste viajaron distancias más cortas que las aves del medio-oeste y del este. Considerando una misma población, las hembras viajaron más lejos que los machos, lo que resultó en que las hembras invernaron típicamente más al sur que los machos.
APA, Harvard, Vancouver, ISO, and other styles
25

Roshier, David A., and Martin W. Asmus. "Use of satellite telemetry on small-bodied waterfowl in Australia." Marine and Freshwater Research 60, no. 4 (2009): 299. http://dx.doi.org/10.1071/mf08152.

Full text
Abstract:
The nomadic or dispersive movements of many Australian waterfowl in response to irregular environmental cues make satellite telemetry studies the only means by which these long-distance movements can be tracked in real time. Unlike some large-bodied soaring species, attaching satellite transmitters to small-bodied waterfowl (<1 kg) is not straightforward because ducks have high wing loadings and need to maintain active flapping to stay aloft. In the present paper, we detail one harness design and attachment method that enabled us to track grey teal (Anas gracilis) for up to 879 days. In addition, we detail rates of data loss, changes in data quality over time and variation in data quality from solar-powered satellite-tags deployed on ducks in Australia and Papua New Guinea. Up to 68% of all locational fixes have a nominal accuracy of less than 1 km, and satellite-tags deployed on wild birds can provide up to 22 location fixes per day and store enough energy during the day to run continuously throughout the night.
APA, Harvard, Vancouver, ISO, and other styles
26

Roberts, Anthony, Emily Silverman, and Suzanne Gifford. "Sample size considerations for satellite telemetry and animal distributions." Journal of Wildlife Management 82, no. 7 (June 14, 2018): 1536–44. http://dx.doi.org/10.1002/jwmg.21504.

Full text
APA, Harvard, Vancouver, ISO, and other styles
27

Moore, Joseph D., David E. Andersen, Thomas R. Cooper, Jeffrey P. Duguay, Shaun L. Oldenburger, C. Al Stewart, and David G. Krementz. "Migratory connectivity of American woodcock derived using satellite telemetry." Journal of Wildlife Management 83, no. 7 (August 5, 2019): 1617–27. http://dx.doi.org/10.1002/jwmg.21741.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Long, Bing, Zhengji Song, and Xingwei Jiang. "On‐line monitoring and diagnosis for satellite telemetry data." Aircraft Engineering and Aerospace Technology 77, no. 1 (February 2005): 42–51. http://dx.doi.org/10.1108/00022660510576037.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Li, Yuqing, Mingjia Lei, Pengpeng Liu, Rixin Wang, and Minqiang Xu. "A Novel Framework for Anomaly Detection for Satellite Momentum Wheel Based on Optimized SVM and Huffman-Multi-Scale Entropy." Entropy 23, no. 8 (August 17, 2021): 1062. http://dx.doi.org/10.3390/e23081062.

Full text
Abstract:
The health status of the momentum wheel is vital for a satellite. Recently, research on anomaly detection for satellites has become more and more extensive. Previous research mostly required simulation models for key components. However, the physical models are difficult to construct, and the simulation data does not match the telemetry data in engineering applications. To overcome the above problem, this paper proposes a new anomaly detection framework based on real telemetry data. First, the time-domain and frequency-domain features of the preprocessed telemetry signal are calculated, and the effective features are selected through evaluation. Second, a new Huffman-multi-scale entropy (HMSE) system is proposed, which can effectively improve the discrimination between different data types. Third, this paper adopts a multi-class SVM model based on the directed acyclic graph (DAG) principle and proposes an improved adaptive particle swarm optimization (APSO) method to train the SVM model. The proposed method is applied to anomaly detection for satellite momentum wheel voltage telemetry data. The recognition accuracy and detection rate of the method proposed in this paper can reach 99.60% and 99.87%. Compared with other methods, the proposed method can effectively improve the recognition accuracy and detection rate, and it can also effectively reduce the false alarm rate and the missed alarm rate.
APA, Harvard, Vancouver, ISO, and other styles
30

Holgate, S. J., P. L. Woodworth, P. R. Foden, and J. Pugh. "A Study of Delays in Making Tide Gauge Data Available to Tsunami Warning Centers." Journal of Atmospheric and Oceanic Technology 25, no. 3 (March 1, 2008): 475–81. http://dx.doi.org/10.1175/2007jtecho544.1.

Full text
Abstract:
Abstract This short note provides conclusions of a study of the various factors that determine the delay between tsunami arrival at a tide gauge station and data being made available at tsunami warning centers. The various delays involved include those associated with the tide gauge hardware and measurement methods and with the form of telemetry employed. It is shown that the most widely used form of telemetry in existing tsunami networks (meteorological satellite data collection platforms) can be improved upon significantly with the use of modern telemetry alternatives [notably Inmarsat’s Broadband Global Area Network (BGAN)], enabling faster, more frequent, more secure, and higher bandwidth transmissions of tide gauge data.
APA, Harvard, Vancouver, ISO, and other styles
31

Liu, Xiao Peng, Wei Wei Wang, and Xiao Ni Chen. "Calculation and Applied Research of Satellite Solar Radiation Pressure Torque." Advanced Materials Research 791-793 (September 2013): 1415–18. http://dx.doi.org/10.4028/www.scientific.net/amr.791-793.1415.

Full text
Abstract:
Satellite solar radiation pressure torque is one of the major long-term interference after the satellite finishes positioning and starts to working. However, there is no method to verify the calculation of solar radiation pressure torque. This paper is to analyze the in-orbit telemetry data of satellite DFH-3. Based on the results of data fitting and pressure torque calculation, the paper aims to test the accuracy of the calculation methods.
APA, Harvard, Vancouver, ISO, and other styles
32

Acierto, Ralph Allen, Akiyuki Kawasaki, Win Win Zin, Aung Than Oo, Khon Ra, and Daisuke Komori. "Development of a Hydrological Telemetry System in Bago River." Journal of Disaster Research 13, no. 1 (February 20, 2018): 116–24. http://dx.doi.org/10.20965/jdr.2018.p0116.

Full text
Abstract:
Hydrological monitoring is one of the key aspects in early warning systems that are vital to flood disaster management in flood-prone areas such as Bago River Basin in Myanmar. Thousands of people are affected due to the perennial flooding. Owing to the increasing pressure of rapid urbanization in the region and future climate change impacts, an early warning system in the basin is urgently required for disaster risk mitigation. This paper introduces the co-establishment of the telemetry system by a group of stakeholders. The co-establishment of the system through intensive consultations, proactive roles in responsibility sharing, and capacity building efforts, is essential in developing a base platform for flood forecasting and an early warning system in the basin. Herein, we identify the key challenges that have been central to the participatory approach in co-establishing the system. We also highlight opportunities as a result of the ongoing process and future impact on the disaster management system in the basin. We also highlight the potential for scientific contributions in understanding the local weather and hydrological characteristics through the establishment of the high-temporal resolution observation network. Using the observation at Zaung Tu Weir, Global Satellite Mapping of Precipitation (GSMaP) and Global Precipitation Measurement (GPM) satellite estimates were assessed. Near real-time and standard versions of both satellite estimates show potential utility over the basin. Hourly aggregation shows slightly higher than 40% probability of detection (POD), on average, for both satellite estimates regardless of the production type. Thus, the hourly aggregation requires correction before usage. The results show useful skills at 60% POD for standard GSMaP (GSMAP-ST), 55% POD for near real-time GSMaP (GSMAP-NR), and 46% POD for GPM, at 3-hourly aggregations. Six-hourly aggregations show maximum benefit for providing useful skill and good correspondence to gauge the observation with GSMAP-ST showing the best true skill score (TSS) at 0.54 and an equitable threat score (ETS) at 0.37. While, both final run GPM and GSMAP-NR show lower POD, TSS, and ETS scores. Considering the latency of near real-time satellite estimates, the GSMAP-NR shows the best potential with a 4-hour latency period for monitoring and forecasting purposes in the basin. The result of the GSMAP-NR does not vary significantly from the GSMAP-ST and all GPM estimates. However, it requires some correction before its usage in any applications, for modeling and forecasting purposes.
APA, Harvard, Vancouver, ISO, and other styles
33

LIU, Li, Tao SHUAI, Jun ZHANG, ChengPan TANG, ShanShi ZHOU, PengFei CHEN, YongHui XIE, ChuanFu LIN, and BaoJun LIN. "Performaces and telemetres analysis of BD satellite passive hydrogen maser." SCIENTIA SINICA Physica, Mechanica & Astronomica 51, no. 1 (December 15, 2020): 019513. http://dx.doi.org/10.1360/sspma-2020-0226.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Curatolo, James A. "Evaluation of a satellite telemetry system for monitoring movements of caribou." Rangifer 6, no. 2 (June 1, 1986): 73. http://dx.doi.org/10.7557/2.6.2.585.

Full text
Abstract:
A cow caribou from the Central Arctic Herd was collared with a satellite-monitored radio transmitter in the Kuparuk Oilfield, Alaska, in 1984. From 19 June to 17 August, the radio transmitted 18 hours per day. A total of 346 locations were recorded, for a mean of 5.8 locations per day or one location every 3.1 hours of transmission time. The location of 13 direct observations of the radio-collared cow averaged less than 1 km from the nearest satellite-fixed location. The satellite-fixed locations of the radio-collared cow provided detailed data on movement patterns during the three seasons studied. The cow traveled an average of 8 km day1, 23 km1, and 14 km day1 during the post-calving season, mosquito season, and oestrid fly season, respectively.
APA, Harvard, Vancouver, ISO, and other styles
35

Otop, Irena, Jan Szturc, Katarzyna Ośródka, and Piotr Djaków. "Automatic quality control of telemetric rain gauge data for operational applications at IMGW-PIB." ITM Web of Conferences 23 (2018): 00028. http://dx.doi.org/10.1051/itmconf/20182300028.

Full text
Abstract:
The automatic procedure of real-time quality control (QC) of telemetric rain gauge measurements (G) has been developed to produce quantitative precipitation estimates mainly for the needs of operational hydrology. The developed QC procedure consists of several tests: gross error detection, a range check, a spatial consistency check, a temporal consistency check, and a radar and satellite conformity check. The output of the procedure applied in real-time is quality index QI(G) that quantitatively characterised quality of each individual measurement. The QC procedure has been implemented into operational work at the Institute of Meteorology and Water Management since 2016. However, some elements of the procedure are still under development and can be improved based on the results and experience collected after about two years of real-time work on network of telemetric rain gauges
APA, Harvard, Vancouver, ISO, and other styles
36

Namgail, Tsewang, John Y. Takekawa, Sivananinthaperumal Bala-Chandran, Ponnusamy Sathiyaselvam, Taej Mundkur, and Scott H. Newman. "Space use of wintering waterbirds in India: Influence of trophic ecology on home-range size." Current Zoology 60, no. 5 (October 1, 2014): 616–21. http://dx.doi.org/10.1093/czoolo/60.5.616.

Full text
Abstract:
Abstract Relationship between species’ home range and their other biological traits remains poorly understood, especially in migratory birds due to the difficulty associated with tracking them. Advances in satellite telemetry and remote sensing techniques have proved instrumental in overcoming such challenges. We studied the space use of migratory ducks through satellite telemetry with an objective of understanding the influence of body mass and feeding habits on their home-range sizes. We marked 26 individuals, representing five species of migratory ducks, with satellite transmitters during two consecutive winters in three Indian states. We used kernel methods to estimate home ranges and core use areas of these waterfowl, and assessed the influence of body mass and feeding habits on home-range size. Feeding habits influenced the home-range size of the migratory ducks. Carnivorous ducks had the largest home ranges, herbivorous ducks the smallest, while omnivorous species had intermediate home-ranges. Body mass did not explain variation in home-range size. To our knowledge, this is the first study of its kind on migratory ducks, and it has important implications for their conservation and management.
APA, Harvard, Vancouver, ISO, and other styles
37

Gutierrez, Roberto, Jose M. Blanes, David Marroqui, Ausias Garrigos, and Francisco Javier Toledo. "System-on-Chip for Real-Time Satellite Photovoltaic Curves Telemetry." IEEE Transactions on Industrial Informatics 14, no. 3 (March 2018): 951–57. http://dx.doi.org/10.1109/tii.2017.2755463.

Full text
APA, Harvard, Vancouver, ISO, and other styles
38

Brawata, Renée, Stuart Rae, Bernd Gruber, Sam Reid, and David Roberts. "Confirmation of little eagle (Hieraaetus morphnoides) migration by satellite telemetry." Australian Journal of Zoology 66, no. 4 (2018): 247. http://dx.doi.org/10.1071/zo18060.

Full text
Abstract:
The post-breeding migration of an adult male little eagle (Hieraaetus morphnoides) was followed from south-eastern Australia to the Northern Territory using a GPS satellite transmitter. The bird bred in open woodland habitat on the edge of the city of Canberra, Australian Capital Territory (ACT), before it flew more than 3300km in 18 days, to winter in an area of eucalypt savannah in the Northern Territory. It remained there for 59 days, within a range of ~30km2, after which the last signal was transmitted. The bird was subsequently resighted back in its ACT territory at the end of winter, thus completing a return migration. This is the first confirmation of post-breeding migration for the species.
APA, Harvard, Vancouver, ISO, and other styles
39

Goulet, Anne-Marie, Mike O. Hammill, and Cyrille Barrette. "QUALITY OF SATELLITE TELEMETRY LOCATIONS OF GRAY SEALS (HALICHOERUS GRYPUS)." Marine Mammal Science 15, no. 2 (April 1999): 589–94. http://dx.doi.org/10.1111/j.1748-7692.1999.tb00827.x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Xu, Dong, Gaofei Zhang, and Zheng You. "On-line pattern discovery in telemetry sequence of micro-satellite." Aerospace Science and Technology 93 (October 2019): 105223. http://dx.doi.org/10.1016/j.ast.2019.06.004.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

LINDBERG, MARK S., and JOHANN WALKER. "Satellite Telemetry in Avian Research and Management: Sample Size Considerations." Journal of Wildlife Management 71, no. 3 (May 2007): 1002–9. http://dx.doi.org/10.2193/2005-696.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Bonadonna, Francesco, and Anna Gagliardo. "Not only pigeons: avian olfactory navigation studied by satellite telemetry." Ethology Ecology & Evolution 33, no. 3 (February 16, 2021): 273–89. http://dx.doi.org/10.1080/03949370.2021.1871967.

Full text
APA, Harvard, Vancouver, ISO, and other styles
43

Zhu, Zhi Lin. "Design and Implementation of Small Satellite Flexible Test Bed." Applied Mechanics and Materials 40-41 (November 2010): 748–53. http://dx.doi.org/10.4028/www.scientific.net/amm.40-41.748.

Full text
Abstract:
This paper analyzes the character and performance of the synthesized test bed on ground of small satellites. By studying several small satellite systems, the hardware and software architectures of flexible test bed are presented. The design ideas of the on-board part and the ground part of small satellite are given. The dynamic configuration for communication request/reply relation, the definition and resolution of the telemetry data signals are mainly discussed. The design and corresponding implementation are proven very effectively on the development of three small satellite systems.
APA, Harvard, Vancouver, ISO, and other styles
44

Aven, Allen M., Ruth H. Carmichael, Matthew J. Ajemian, and Sean P. Powers. "Addition of passive acoustic telemetry mitigates lost data from satellite-tracked manatees." Marine and Freshwater Research 66, no. 4 (2015): 371. http://dx.doi.org/10.1071/mf14178.

Full text
Abstract:
Satellite-tracked manatees routinely lose satellite tags or tag functionality, resulting in the loss of valuable data on migration and habitat use patterns. Fortunately, some movement data from these animals remain salvageable because manatees typically retain a peduncle belt containing an acoustic transmitter that can be detected with a submersible hydrophone. We deployed an array of moored datalogging hydrophones at key locations in our study area to detect manatee belt-embedded acoustic transmitters, a technique not typically used to track manatees. Our array was successful in detecting five tagged manatees, and concurrently detected compatible acoustic tags of other estuarine fauna (e.g. Bull Sharks) tagged by local researchers. Moored datalogging hydrophones, therefore, provided a method to mitigate the loss of satellite tags from estuarine megafauna, and enhanced collaborative opportunities with researchers who tagged other species using compatible equipment.
APA, Harvard, Vancouver, ISO, and other styles
45

Spiridonov, A. A., D. V. Ushakov, and V. A. Saechnikov. "Simulation of Navigation Receiver for Ultra-Small Satellite." Devices and Methods of Measurements 10, no. 4 (December 12, 2019): 331–40. http://dx.doi.org/10.21122/2220-9506-2019-10-4-331-340.

Full text
Abstract:
Currently, ultra-small satellite aresubjectstostringentrequirementsintermsoftheaccuracyof determining the position of the satellite in orbit, while the satellite is the subject to restrictions on mass, size and power consumption. The aim of this work is to simulate of navigation receiver operation for the ultra-small satellite with restrictions on energy consumption and computational resources.The operating conditions are considered and the requirements to the onboard navigation receiver for the ultra-small satellite are determined. The navigation receiver operation at the initial stage, performance testing, error detection, analysis of the reliability of the solution of the navigation-time determination problem are described.The structure of the design ballistics problems for orbit prediction of ultra-small spacecraft and navigation satellites, radio visibility intervals for GLONASS and GPS systems, parameters of navigation signals have been developed.The motion relative to the satellite systems GPS and GLONASS for a preliminary orbit of СubeBel-1 have been simulated. The Doppler dynamics of the GPS satellite signals in the receiver without restrictions on the relative speed for one day has been calculated. Radio visibility intervals for GPS and GLONASS satellites were calculated and optimal conditions for the cold start of the navigation receiver with a relative speed limit (Vr < 500 m/s) for 1 hour of operation both in separate and in joint operation on both systems were determined.To test the verification methods of the experimental data of the СubeBel-1 satellite, the operation of the navigation receiver of the Nsight satellite was studied according to the received telemetry from the beginning of its flight until the moment it entered stable operation.It is shown that the telemetry data of the navigation receiver at the testing stage had a significant error. After software correction, the navigation receiver worked steadily throughout the week of observation, the error of longitude and latitude measurements did not exceed 0.2 degrees.
APA, Harvard, Vancouver, ISO, and other styles
46

Hu, Di, Dan Liu, and Guangming Bai. "Study on Fault Detection of Star-Sensor Based on UKF." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 6 (December 2019): 1158–64. http://dx.doi.org/10.1051/jnwpu/20193761158.

Full text
Abstract:
The fault detection of star sensor in satellite when no telemetry data from the gyroscope can be obtained is investigated. An algorithm based on the unscented Kalman filter (UKF) is proposed to indicate the occurrence of the fault. By adding the angular speed of the satellite into the state equation, the UKF is designed to estimate the angular and the angular speed of the satellite. After that, a comparison between the measured and the estimated value of both the angular and the angular speed is made. In this way, the star sensor fault can be finally detected. Two fault cases (abrupt constant fault and noise increase fault) are taken into consideration in the simulation to show the validness of the present algorithm. Furthermore, a test verification by using the real telemetry data on orbit is performed to demonstrate that the present algorithm can detect the star sensor fault effectively. In application, the developed fault detection algorithm can be employed in the ground measurement and control station to monitor the star sensor fault such that the fault can be detected immediately and the alarm indicating the occurrence of the fault will be given.
APA, Harvard, Vancouver, ISO, and other styles
47

Qin, Wei, Hong Bo Han, Ling Wei Yan, and Yi Qi Guo. "A Fault Diagnosis Method for In-Orbit Satellite Based on Credibility and Degree of Membership." Applied Mechanics and Materials 556-562 (May 2014): 2874–77. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.2874.

Full text
Abstract:
The mistake rate of in-orbit satellite diagnosis reasoning is a problem which is difficult to solve because of the complex technique frame of satellite and the bit errors of telemetry data. This paper proposed a diagnosis reasoning method based on credibility and degree of membership. And the credibility passing algorithm and the membership function prototype were given to support the diagnosis reasoning process. The argumentation indicates that the diagnosis reasoning mistake rate can be reduced with this method.
APA, Harvard, Vancouver, ISO, and other styles
48

Yin, Hong, Shu Qiang Yang, Ping Yin, Song Chang Jin, and Zhi Kun Chen. "An Improved Similarity Comparison Method for Long Time Series." Applied Mechanics and Materials 556-562 (May 2014): 3462–67. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.3462.

Full text
Abstract:
In the process of satellite monitoring and control management, a lot of satellite telemetry data were generated and stored at a form of time series in the database. Time series similarity measure is the basis of these technologies, and improving its algorithm can greatly promote the efficiency of anomaly detecting. This paper presents a parallel scheme for fast similarity search based on DTW, called MRDTW, in large satellite time series. By experiment evaluation, we show our approach retained the original accuracy as DTW, and the efficiency of similarity measure has been greatly improved in large time series.
APA, Harvard, Vancouver, ISO, and other styles
49

Jiang, Haixu, Ke Zhang, Jingyu Wang, and Meibo Lü. "Spacecraft Anomaly Recognition Based on Morphological Variational Mode Decomposition and JRD." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 36, no. 1 (February 2018): 20–27. http://dx.doi.org/10.1051/jnwpu/20183610020.

Full text
Abstract:
Considering the difficulty in identifying the in-orbital spacecraft weak anomaly, a spacecraft anomaly state recognition method based on Morphological variational mode decomposition and JRD distance is proposed. First of all, the telemetry data of the spacecraft is decomposed into multi-scale modal functions with different frequencies via morphological variational modal decomposition. Then the Rényi entropy of each modal function is extracted, which is regarded as the feature of telemetry data. Finally, the recognition of spacecraft anomaly state is realized by comparing the JRD distance between the sample data and the measured data. The proposed method is verified by means of the telemetry data of the weak anomaly speed of a satellite reaction wheel. The simulation results demonstrate that the proposed method can effectively identify the anomaly of the spacecraft and has obvious advantage in recognition speed.
APA, Harvard, Vancouver, ISO, and other styles
50

Fadlie Sabri, Sharizal, Nor'Asnilawati Salleh, and Elena Woo Lai Leng. "Designing and Developing a Ground Operation Software for Picosatellite Operation and Data Processing." Applied Mechanics and Materials 225 (November 2012): 475–80. http://dx.doi.org/10.4028/www.scientific.net/amm.225.475.

Full text
Abstract:
Ground operation software (GOS) plays an important role in satellite operations. The software need to be able to retrieve, decode, display and archive the telemetry data as well as send command to control the satellite. These are mandatory functions which will allow satellite operators to communicate and command the satellite in ensuring its mission is executed as designed. Researchers in Agensi Angkasa Negara (ANGKASA) are currently developing a picosatellite as a research project using various Commercial Off-The-Shelf (COTS) components. Even the software algorithm and coding are being developed from scratch. Compared to bigger sized satellites, the picosatellite has a much simpler architecture, modules and mission, thus the required functions on GOS are greatly reduced. The communication protocol used is unique yet simple, which means the GOS will not require any additional modules to understand and interpret either the telemetry data or payload data received as it is already in an easy-to-understand format. GOS was developed using .Net platform with several modules for easy maintenance and expansion of the system. Closed-loop simulation was applied to test the functionalities of GOS as well as for debugging purposes. Results of the simulation are presented at the end of the paper. In conclusion, the GOS may require a few upgrades due to a change of hardware. However, it will still remain as the main reference for future development of GOS.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Telemetria Satellitare' for other source types:
Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography