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Journal articles on the topic "Airborne digital data acquisition system"

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Wright, D. L., J. A. Bradley, and S. M. Hodge. "Use of a new high-speed digital data acquisition system in airborne ice-sounding." IEEE Transactions on Geoscience and Remote Sensing 27, no. 5 (September 1989): 561–67. http://dx.doi.org/10.1109/tgrs.1989.35938.

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Hudnut, Kenneth W., Benjamin A. Brooks, Katherine Scharer, Janis L. Hernandez, Timothy E. Dawson, Michael E. Oskin, J. Ramon Arrowsmith, et al. "Airborne Lidar and Electro-Optical Imagery along Surface Ruptures of the 2019 Ridgecrest Earthquake Sequence, Southern California." Seismological Research Letters 91, no. 4 (April 22, 2020): 2096–107. http://dx.doi.org/10.1785/0220190338.

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Abstract Surface rupture from the 2019 Ridgecrest earthquake sequence, initially associated with the Mw 6.4 foreshock, occurred on 4 July on a ∼17 km long, northeast–southwest-oriented, left-lateral zone of faulting. Following the Mw 7.1 mainshock on 5 July (local time), extensive northwest–southeast-oriented, right-lateral faulting was then also mapped along a ∼50 km long zone of faults, including subparallel splays in several areas. The largest slip was observed in the epicentral area and crossing the dry lakebed of China Lake to the southeast. Surface fault rupture mapping by a large team, reported elsewhere, was used to guide the airborne data acquisition reported here. Rapid rupture mapping allowed for accurate and efficient flight line planning for the high-resolution light detection and ranging (lidar) and aerial photography. Flight line planning trade-offs were considered to allocate the medium (25 pulses per square meter [ppsm]) and high-resolution (80 ppsm) lidar data collection polygons. The National Center for Airborne Laser Mapping acquired the airborne imagery with a Titan multispectral lidar system and Digital Modular Aerial Camera (DiMAC) aerial digital camera, and U.S. Geological Survey acquired Global Positioning System ground control data. This effort required extensive coordination with the Navy as much of the airborne data acquisition occurred within their restricted airspace at the China Lake ranges.
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Aicardi, I., F. Chiabrando, N. Grasso, A. M. Lingua, F. Noardo, and A. Spanò. "UAV PHOTOGRAMMETRY WITH OBLIQUE IMAGES: FIRST ANALYSIS ON DATA ACQUISITION AND PROCESSING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 835–42. http://dx.doi.org/10.5194/isprsarchives-xli-b1-835-2016.

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In recent years, many studies revealed the advantages of using airborne oblique images for obtaining improved 3D city models (e.g. including façades and building footprints). Expensive airborne cameras, installed on traditional aerial platforms, usually acquired the data. The purpose of this paper is to evaluate the possibility of acquire and use oblique images for the 3D reconstruction of a historical building, obtained by UAV (Unmanned Aerial Vehicle) and traditional COTS (Commercial Off-the-Shelf) digital cameras (more compact and lighter than generally used devices), for the realization of high-level-of-detail architectural survey. The critical issues of the acquisitions from a common UAV (flight planning strategies, ground control points, check points distribution and measurement, etc.) are described. Another important considered aspect was the evaluation of the possibility to use such systems as low cost methods for obtaining complete information from an aerial point of view in case of emergency problems or, as in the present paper, in the cultural heritage application field. The data processing was realized using SfM-based approach for point cloud generation: different dense image-matching algorithms implemented in some commercial and open source software were tested. The achieved results are analysed and the discrepancies from some reference LiDAR data are computed for a final evaluation. The system was tested on the S. Maria Chapel, a part of the Novalesa Abbey (Italy).
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Aicardi, I., F. Chiabrando, N. Grasso, A. M. Lingua, F. Noardo, and A. Spanò. "UAV PHOTOGRAMMETRY WITH OBLIQUE IMAGES: FIRST ANALYSIS ON DATA ACQUISITION AND PROCESSING." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B1 (June 6, 2016): 835–42. http://dx.doi.org/10.5194/isprs-archives-xli-b1-835-2016.

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In recent years, many studies revealed the advantages of using airborne oblique images for obtaining improved 3D city models (e.g. including façades and building footprints). Expensive airborne cameras, installed on traditional aerial platforms, usually acquired the data. The purpose of this paper is to evaluate the possibility of acquire and use oblique images for the 3D reconstruction of a historical building, obtained by UAV (Unmanned Aerial Vehicle) and traditional COTS (Commercial Off-the-Shelf) digital cameras (more compact and lighter than generally used devices), for the realization of high-level-of-detail architectural survey. The critical issues of the acquisitions from a common UAV (flight planning strategies, ground control points, check points distribution and measurement, etc.) are described. Another important considered aspect was the evaluation of the possibility to use such systems as low cost methods for obtaining complete information from an aerial point of view in case of emergency problems or, as in the present paper, in the cultural heritage application field. The data processing was realized using SfM-based approach for point cloud generation: different dense image-matching algorithms implemented in some commercial and open source software were tested. The achieved results are analysed and the discrepancies from some reference LiDAR data are computed for a final evaluation. The system was tested on the S. Maria Chapel, a part of the Novalesa Abbey (Italy).
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Yu, Yong Tao, Ming Chen, Feng Tian, and Ying Ji Shan. "The Design and Realization of Airborne Electrical Equipments’ Online Test System in the Environments of Mechanics." Applied Mechanics and Materials 687-691 (November 2014): 1038–43. http://dx.doi.org/10.4028/www.scientific.net/amm.687-691.1038.

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Current OTS (Online Test System, OTS) of airborne electrical equipments in the environments of mechanics is only able to test statically but dynamically. To solve the problem, a new kind of dynamic test system based on PXI bus is designed. In the design, modular instrument resources that used in the third generation of ATE (Auto Test System, ATE) commonly is adopted to prove the system’s reusability, extensibility and standard ability, digital signal acquisition is replaced with analog signal acquisition to realize dynamic test, support from the method of process monitoring is drew to get the capability to detect the reversible failure in UUT (Unit Under Test, UTT), VC++ language is used as the software development tool to control the system and record test data. In the special mechanics environment such as centrifuge, drawing lessons from the experience of the new concept dynamic test, the system architecture of remote control acquisition is used to prove the stability and efficiency of the test system greatly. The experimental result shows that the system runs well and has more advantages such as high efficiency of auto-test and reliability of failure diagnosis results, meeting new demand of the airborne electrical equipments’ online test in the environments of mechanics.
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Tampubolon, W., and W. Reinhardt. "QUALITY ASSESSMENT OF AN EXTENDED INTERFEROMETRIC RADAR DATA PROCESSING APPROACH." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4 (September 19, 2018): 615–21. http://dx.doi.org/10.5194/isprs-archives-xlii-4-615-2018.

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<p><strong>Abstract.</strong> Radar data acquisition is a reliable technology to provide base data for topographical mapping. Its flexibility and weather independency makes radar data more attractive in comparison with traditional airborne data acquisition. This advantage emplaces radar data acquisition as an alternative method for many applications including Large Scale Topographical Mapping (LSTM). LSTM i.e. larger or equal than 1<span class="thinspace"></span>:<span class="thinspace"></span>10.000 map scale is one of the prominent priority tasks to be finished in an accelerated way especially in third world countries such as Indonesia. The available TerraSAR-X Add on Digital Elevation Model X (TanDEM-X) Intermediate Digital Elevation Model (IDEM) from German Aerospace Center (DLR) as one useful global scientific data set however still complies with High Resolution Terrain Information (HRTI) Level 3 only. The accuracy of the end product of pairwise bi-static TanDEM-X data can be improved by some potential measures such as incorporation of Ground Control Points (GCPs) within the interferometric data processing. It is expected that the corresponding end product can fulfil HRTI Level 4 specification. From this point, we focus on the step of phase difference measurements in radar interferometry to generate elevation model with least square adjustment approach using three main parameters i.e. height reference, absolute phase offset and baseline. Those three parameters are considered to be essential within the Digital Surface Model (DSM) generation process. Therefore it is necessary to find the optimal solution within aforementioned adjustment model. In this paper we use an linearized model, as discussed in section 2.4, to process the bi-static TanDEM-X datasets and investigate how this improves the accuracy of the generated DSM. As interferometric radar data processing relies on accurate GCP data we use Indonesian Geospatial Reference System (SRGI) for our investigations. Also, we use baseline and phase offset information from TanDEM-X metadata. Subsequently, the DSM generated using Sentinel Application Platform (SNAP) desktop, is the main product used for LSTM. This product has to be assessed using check points derived from conventional airborne data acquisition using RCD-30 metric camera and the accuracy is compared with the accuracy of the IDEM. Summarized, this paper aims on an improvement of the DSM generation by adjusting main parameters through our linearized model.</p>
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Goodbody, Tristan, Nicholas Coops, Txomin Hermosilla, Piotr Tompalski, and Gaetan Pelletier. "Vegetation Phenology Driving Error Variation in Digital Aerial Photogrammetrically Derived Terrain Models." Remote Sensing 10, no. 10 (September 27, 2018): 1554. http://dx.doi.org/10.3390/rs10101554.

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Digital aerial photogrammetry (DAP) and unmanned aerial systems (UAS) have emerged as synergistic technologies capable of enhancing forest inventory information. A known limitation of DAP technology is its ability to derive terrain surfaces in areas with moderate to high vegetation coverage. In this study, we sought to investigate the influence of flight acquisition timing on the accuracy and coverage of digital terrain models (DTM) in a low cover forest area in New Brunswick, Canada. To do so, a multi-temporal UAS-acquired DAP data set was used. Acquired imagery was photogrammetrically processed to produce high quality DAP point clouds, from which DTMs were derived. Individual DTMs were evaluated for error using an airborne laser scanning (ALS)-derived DTM as a reference. Unobstructed road areas were used to validate DAP DTM error. Generalized additive mixed models (GAMM) were generated to assess the significance of acquisition timing on mean vegetation cover, DTM error, and proportional DAP coverage. GAMM models for mean vegetation cover and DTM error were found to be significantly influenced by acquisition date. A best available terrain pixel (BATP) compositing exercise was conducted to generate a best possible UAS DAP-derived DTM and outline the importance of flight acquisition timing. The BATP DTM yielded a mean error of −0.01 m. This study helps to show that the timing of DAP acquisitions can influence the accuracy and coverage of DTMs in low cover vegetation areas. These findings provide insight to improve future data set quality and provide a means for managers to cost-effectively derive high accuracy terrain models post-management activity.
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Park, So-Young, Dae Geon Lee, Eun Jin Yoo, and Dong-Cheon Lee. "Segmentation of LiDAR Data Using Multilevel Cube Code." Journal of Sensors 2019 (April 17, 2019): 1–18. http://dx.doi.org/10.1155/2019/4098413.

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Light detection and ranging (LiDAR) data collected from airborne laser scanning systems are one of the major sources of spatial data. Airborne laser scanning systems have the capacity for rapid and direct acquisition of accurate 3D coordinates. Use of LiDAR data is increasing in various applications, such as topographic mapping, building and city modeling, biomass measurement, and disaster management. Segmentation is a crucial process in the extraction of meaningful information for applications such as 3D object modeling and surface reconstruction. Most LiDAR processing schemes are based on digital image processing and computer vision algorithms. This paper introduces a shape descriptor method for segmenting LiDAR point clouds using a “multilevel cube code” that is an extension of the 2D chain code to 3D space. The cube operator segments point clouds into roof surface patches, including superstructures, removes unnecessary objects, detects the boundaries of buildings, and determines model key points for building modeling. Both real and simulated LiDAR data were used to verify the proposed approach. The experiments demonstrated the feasibility of the method for segmenting LiDAR data from buildings with a wide range of roof types. The method was found to segment point cloud data effectively.
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Yankielun, Norbert E., Michael G. Ferrick, and Patricia B. Weyrick. "Development of an airborne millimeter-wave FM-CW radar for mapping river ice." Canadian Journal of Civil Engineering 20, no. 6 (December 1, 1993): 1057–64. http://dx.doi.org/10.1139/l93-136.

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Analyses of a river's freezeup ice cover stability and its breakup rely on detailed knowledge of the cover's thickness and the variability of that thickness. A high-resolution, millimeter wave (26.5- to 40-GHz) frequency modulated-continuous wave radar with real-time data acquisition and digital signal processing and display capability was deployed from a low-flying (3–10 m) helicopter to continuously acquire, process, and display data during an ice thickness profiling survey of a 24-km study reach. A nominal sheet ice thickness of 50 cm, occasional areas of new ice sheet as thin as 5 cm, open leads, and massive ice accumulations of the order of 5 m thick were encountered. Radar profiling data agreed with ground truth from borehole measurements of the sheet ice, and provided a more detailed view of the ice conditions than that obtained from a low altitude video survey. The radar system provided rapid, safe, and accurate data acquisition, allowing detailed mapping of the ice conditions throughout the reach. Key words: airborne, FM-CW radar, high-resolution radar, ice profiling, millimeter waves, radar remote sensing, river ice.
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Ladai, A. D., and J. Miller. "Point Cloud Generation from sUAS-Mounted iPhone Imagery: Performance Analysis." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XL-1 (November 7, 2014): 201–5. http://dx.doi.org/10.5194/isprsarchives-xl-1-201-2014.

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The rapidly growing use of sUAS technology and fast sensor developments continuously inspire mapping professionals to experiment with low-cost airborne systems. Smartphones has all the sensors used in modern airborne surveying systems, including GPS, IMU, camera, etc. Of course, the performance level of the sensors differs by orders, yet it is intriguing to assess the potential of using inexpensive sensors installed on sUAS systems for topographic applications. This paper focuses on the quality analysis of point clouds generated based on overlapping images acquired by an iPhone 5s mounted on a sUAS platform. To support the investigation, test data was acquired over an area with complex topography and varying vegetation. In addition, extensive ground control, including GCPs and transects were collected with GSP and traditional geodetic surveying methods. The statistical and visual analysis is based on a comparison of the UAS data and reference dataset. The results with the evaluation provide a realistic measure of data acquisition system performance. The paper also gives a recommendation for data processing workflow to achieve the best quality of the final products: the digital terrain model and orthophoto mosaic. <br><br> After a successful data collection the main question is always the reliability and the accuracy of the georeferenced data.
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Dissertations / Theses on the topic "Airborne digital data acquisition system"

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Coonce, Kenneth G., and Jens Strahmann. "DIGITAL TAPE RECORDING IN AN AIRBORNE DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 1992. http://hdl.handle.net/10150/608902.

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International Telemetering Conference Proceedings / October 26-29, 1992 / Town and Country Hotel and Convention Center, San Diego, California
This paper describes the functionality of an airborne telemetry system which collects data from standard PCM, MIL 1553 and ARINC data sources and records this data to an AMPEX DRCSi Digital Tape Recorder while supporting concurrent realtime data processing and display functions. The system includes data acquisition equipment, digital to analog capability, data simulation and a wide range of data preprocessing capability. Emphasis is given to the implementation of the AMPEX recorder interface. The entire system is composed of data acquisition equipment to directly input measurements, a telemetry front end to collect PCM, MIL 1553 and ARINC 429 & 561 data, a host computer to control and monitor the setup, recording and distribution of data and a pair of high resolution color workstations for operator control and data display. This equipment is housed within a single, military-type electronic enclosure which is loaded into the cargo bay of the aircraft as a single unit and manned by two people during flight. The Digital Tape Recorder provides for a large data capacity and very high data rates. Special I/O requirements, data rates and data selection options are discussed. Consideration is given for the best test flight utilization of the AMPEX recorder in both acquisition and playback modes.
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Troth, Bill. "TRADEOFFS TO CONSIDER WHEN SELECTING AN AIRBORNE DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 2000. http://hdl.handle.net/10150/606787.

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International Telemetering Conference Proceedings / October 23-26, 2000 / Town & Country Hotel and Conference Center, San Diego, California
Selecting an airborne data acquisition system involves compromises. No single data acquisition system can be at the same time, lowest cost, smallest, easiest to use and most accurate. The only way to come to a reasonable decision is to carefully plan the project, taking into account what measurements will be required, what are the physical environments involved, what personnel and resources will be needed and of course, how much money is available in the budget? Getting the right mix of equipment, resources and people to do the job within the schedule and the budget is going to involve a number of tradeoffs. A good plan and a thorough knowledge of available resources and equipment will allow you make the necessary decisions. Hopefully, this paper will offer some suggestions that will aid in preparing your plan and give some insight into available system alternatives.
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Sweeney, Paul. "THE NEXT GENERATION AIRBORNE DATA ACQUISITION SYSTEMS. PART 1 - ANTI-ALIASING FILTERS: CHOICES AND SOME LESSONS LEARNED." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605378.

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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The drive towards higher accuracy and sampling rates has raised the bar for modern FTI signal conditioning. This paper focuses on the issue of anti-alias filtering. Today's 16-bit (and greater resolution) ADC’s, coupled with the drive for optimum sampling rates, means that filters have to be more accurate and yet more flexible than ever before. However, in order to take full advantage of these advances, it is important to understand the trade-offs involved and to correctly specify the system filtering requirements. Trade-offs focus on: • Analog vs. Digital signal conditioning • FIR vs. IIR Digital Filters • Signal bandwidth vs. Sampling rate • Coherency issues such as filter phase distortion vs. delay This paper will discuss each of these aspects. In particular, it will focus on some of the advantages of digital filtering various analog filter techniques. This paper will also look at some ideas for specifying filter cut-off and characteristics.
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Netzer, Allan. "AIRBORNE DATA ACQUISITION and RELAY SYSTEM." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613170.

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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, Nevada
The Air Force Flight Test Center (AFFTC), 6545th Test Group, is the Air Force center of expertise for Unmanned Air Vehicle (UAV) test and evaluation (T&E). To facilitate this mission, the 6545th Test Group developed three NC-130 Surrogate Carrier Launch Platform (SCLP) aircraft for UAV test support. The SCLP aircraft support various test functions including avionics testing, captive-carriage, and launch of UAVs and missiles. The system can support concept validation and early Developmental Test and Evaluation (DT&E) without requiring the operational launch platform, freeing these critical assets from test support. The SCLP aircraft use a palletized “roll-on/roll-off” approach to increase test support flexibility and decrease test costs. Capabilities include airborne command and control, flight termination, telemetry tracking, recording, relay of in-flight test vehicle data, and engineering test stations for airborne data analysis and test control. The SCLP can captive-carry, launch, and operate a test article out of line of sight of range ground stations. SCLP can display engineering data and relay the data to a Mission Control Center (MCC). Additionally, the SCLP permits autonomous operation on undeveloped airspace or supplements capabilities at existing facilities. Early SCLP configurations were used during concept validation of the air-launched Tacit Rainbow missile, while later variations supported several efforts, including classified programs. This paper describes the telemetry-tracking and relay capabilities of the SCLP using the Airborne Data Acquisition and Relay System (ADARS) station. The ADARS uses a combination of tracking and omni-directional antennas to acquire, track, record, and retransmit telemetry data. The combination of two directional tracking antennas and diversity combining of the received signals enables the system to reliably acquire test vehicle data at relatively low signal levels or with high fade rates. The system proved very versatile and was modified to support various special project requirements. The system is currently configured to receive and retransmit telemetry data up to a rate of 1.92 Megabits per second (Mbps).
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MacDougall, Christopher. "INTEGRATING A GROUND WEATHER DATA ACQUISITION SYSTEM AND AN AIRBORNE DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 1997. http://hdl.handle.net/10150/607388.

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International Telemetering Conference Proceedings / October 27-30, 1997 / Riviera Hotel and Convention Center, Las Vegas, Nevada
During engine and airfield performance testing it is often necessary to acquire weather data at the airfield where the test is being conducted. The airborne data acquisition system (DAS) acquires data associated with flight parameters. A separate system records airport weather conditions. Many times the separate system is an Automated Terminal Information Service (ATIS) or the ground crew relaying wind speed, wind direction and temperature from a weather station. To improve this system, the weather station is designed to acquire and store the data in memory. Utilizing a second DAS that is remote to the airborne DAS poses several problems. First, it is undesirable to have many different data acquisition systems from which to process data. The problem then develops into one of integrating the ground weather DAS with the existing airborne DAS. Other problems of system integrity, compatibility and FCC licensing exist. Complete system integration while maintaining integrity and compatibility is overcome by controlling signal format, flow and timing and is discussed in detail. Further discussion of the issue of transmission is overcome by a technique called spread-spectrum and is used in accordance with FCC rules and regulations.
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Dai, Jiwang, Thomas DeSelms, and Edward Grozalis. "AN ETHERNET BASED AIRBORNE DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 2003. http://hdl.handle.net/10150/605593.

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International Telemetering Conference Proceedings / October 20-23, 2003 / Riviera Hotel and Convention Center, Las Vegas, Nevada
There is growing interest in the airborne instrumentation community to adopt commercial standards to obtain scalable data rates, standards based interoperability, and utilization of Commercial Off The Shelf (COTS) products to reduce system costs. However, there has been few such data acquisition systems developed to date. L-3 Telemetry East has developed a prototype called the Network Data Acquisition System (NetDAS), which is based on the 10/100 Base-T Ethernet standard, TCP/UDP/IP network protocols and an industrial Ethernet switch. NetDAS has added network capability to the legacy MPC-800 telemetry system by replacing the existing formatter module with a formatter/controller based on a COTS CPU module and a custom designed bridge module. NetDAS has demonstrated transmission bit rates as high as 20 Mbps from a single unit using UDP/IP and an Ethernet switch. The NetDAS system has also demonstrated scalable and distributed architecture.
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Dennard, Robert C. "FLEXIBLE AIRBORNE/SPACE DATA ACQUISITION SYSTEM (FAStDAS)." International Foundation for Telemetering, 1993. http://hdl.handle.net/10150/608846.

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International Telemetering Conference Proceedings / October 25-28, 1993 / Riviera Hotel and Convention Center, Las Vegas, Nevada
In today's aerospace environment, the watchwords and demands for system developers have become "faster, cheaper, better". The use of an industry standard bus and Commercial Off The Shelf (COTS) hardware can substantially lower design time, cost, and enhance performance. This paper describes the Flexible Airborne/Space Data Acquisition System (FAStDAS) design for the MSTI series satellites. While the FAStDAS architecture was designed for the specifics of the MSTI satellites, the approach provides the flexibility for use on a wide variety of airborne and space applications.
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Harris, Kevin E. "Portable Airborne Digital Data System Recorder." International Foundation for Telemetering, 1994. http://hdl.handle.net/10150/611742.

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International Telemetering Conference Proceedings / October 17-20, 1994 / Town & Country Hotel and Conference Center, San Diego, California
Veda Incorporated has developed an airborne instrumentation recorder for a major commercial aircraft manufacturer. The recorder was developed for use in the aircraft company's Portable Airborne Digital Data System (PADDS), a small scale data acquisition and monitor system used for flight testing. The recorder is designed around an off-the-shelf 8mm tape drive, the Exabyte 8505. It records asynchronous, variable-rate data in a proprietary 24-bit recording format, and allows the data to be played back in real time. Its RS-422 control interface is designed to imitate the recorder used in the company's large scale data acquisition system, the Ampex DCRSi-II. Special provisions allow it to withstand the environment of an airplane's EE bay.
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Malchodi, L. A. "ADVANCED DIGITAL DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/613052.

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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, Nevada
An ARINC 429 data acquisition system has been developed by Flight Test Engineering for the Boeing Commercial Airplane Group. Traditionally, acquired ARINC 429 data is stored in the acquisition system and periodically sampled for recording. This paper describes a system which acquires data from many different ARINC 429 digital data buses and records that data as soon as it is has been transmitted on the bus.
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Berdugo, Albert, and John Hildin. "A SYSTEM APPROACH TO A NETWORK CENTRIC AIRBORNE DATA ACQUISITION SYSTEM." International Foundation for Telemetering, 2006. http://hdl.handle.net/10150/604245.

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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, California
Airborne data acquisition systems have changed very little over the years. Their growth has primarily been in the area of digital filtering and the acquisition of new avionic busses. Communication between data acquisition units operating as a system still employs Time Division Multiplexing scheme. These schemes utilize command and data busses like CAIS and PCM. Although this approach is highly efficient, it has many drawbacks. These drawbacks have resulted in rigid system architecture, system bandwidth limitations, highly specialized recorders to acquire unique avionic busses that would otherwise overwhelm the system bandwidth, and unidirectional flow of data and control. This paper describes a network centric data acquisition system that is Ethernet based. Although Ethernet is known as an asynchronous bus, the paper will describe a deterministic time distribution over the bus per IEEE-1588 that allows the use of a packet network for airborne data acquisition. The acquisition unit within the network system is defined by its MIB (Management Information Base) and operates as a data source unit. Other network components may operate as a data sink unit, such as recorders, or as a data source and sink. The role of different units in the network system will be evaluated. The paper will also describe network gateways that allow the use of traditional PCM systems with a network-based system.
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Books on the topic "Airborne digital data acquisition system"

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Rendine, John J. Real-time airborne ocean sampling and applications to naval operations. Monterey, Calif: Naval Postgraduate School, 1986.

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Wilkinson, S. W. The NOAA King Air Airborne Data Acquisition System: Description and user's guide. Silver Spring, Md: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, 1988.

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Wilkison, Stan W. The NOAA King Air Airborne Data Acquisition System: Description and user's guide. Silver Spring, Md: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, 1988.

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Office, General Accounting. Battlefield automation: Field artillery data systems acquisition problems and budget impacts : briefing report to the chairman, Subcommittee on Defense, Committee on Appropriations, House of Representatives. Washington, D.C: The Office, 1989.

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Abouarkoub, Ahmed A. M. Development of a digital data acquisition system for localised power loss measurement. [Leicester]: De Montfort University, 1998.

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Codd, Bernard. A digital data acquisition system to resolve the small changes in conductance of an STM junction in the presence of noise. Leicester: De Montfort University, 1999.

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Connell, Joseph F. Digital data acquisition and development of geographic information system coverages for use with the public water-supply wells and springs in Tennessee. Nashville, Tenn: U.S. Dept. of the Interior, U.S. Geological Survey, 1993.

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United States. National Aeronautics and Space Administration., ed. Software manual for operating particle displacement tracking data acquisition and reduction system. [Washington, DC]: National Aeronautics and Space Administration, 1991.

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M, Benson Carl, Gary G. Allen, and George C. Marshall Space Flight Center., eds. A digital imaging photometry system for cometary data acquisition: Center director's discretionary fund final report. [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1986.

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A digital imaging photometry system for cometary data acquisition: Center director's discretionary fund final report. [Marshall Space Flight Center, Ala.]: National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1986.

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Book chapters on the topic "Airborne digital data acquisition system"

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"Comprehensive Measurement System." In Digital Design for Computer Data Acquisition, 211–75. Cambridge University Press, 1990. http://dx.doi.org/10.1017/cbo9780511608247.010.

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"System Model and Data Acquisition of SAR Image." In Digital Signal Processing Techniques and Applications in Radar Image Processing, 194–225. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470377765.ch7.

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Anand, Abhineet, and M. Arvindhan. "Development and Various Critical Testing Operational Frameworks in Data Acquisition for Cyber Forensics." In Advances in Digital Crime, Forensics, and Cyber Terrorism, 88–102. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1558-7.ch006.

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Digital forensics is the science of preserving and analyzing digital data; this data can then be used in court cases as well as for crime detection and prevention. Digital forensics began in the 1970s and was initially used as a tool for fighting financial crime. Today, with computers and digital devices being an integral part of our professional and private lives, digital forensics are used/needed in a wide variety of disputes. Data Acquisitions is described and discuss different techniques or methodology obtain the data, facts, and figures from different resource and at a different level of the system.
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Mrugala, Marek, Robert M. Belesky, H. Reginald Hardy, and Paul L. Marcuzzo. "Development and performance of a microcomputer-based digital data acquisition system for use in a rock mechanics laboratory." In Use of Computers in the Coal Industry, 191–208. CRC Press, 2020. http://dx.doi.org/10.1201/9781003079262-30.

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Lin, Guangfu, Zhenxing Yin, and Guo Feng. "Design and Implementation of Bipolar Digital Signal Acquisition and Processing System based on FPGA and ACPL-224." In Global Applications of Pervasive and Ubiquitous Computing, 206–11. IGI Global, 2013. http://dx.doi.org/10.4018/978-1-4666-2645-4.ch022.

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This paper proposes new approaches for designing a bipolar DS acquisition system to reduce the harm of external factors on equipment, as well as fulfill system requirements at the veracity and reliability of the equipment to quickly connect. The design method chosen is ACPL-224 for chip of the interface about data acquisition on the FPGA device, including system principle, interface circuit logic, the method of data processing, and so forth. Now that this method has been applied, it has achieved good results, including extending the system’s adaptive range of external signal and enhancing the efficiency of the interface to quickly connect.
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Androutsopoulou, Aggeliki, and Yannis Charalabidis. "A Model for Evidence-Based Social Policy Making, Driven by Big Data, Dynamic Simulation and Stakeholders Participation." In Perspectives for Digital Social Innovation to Reshape the European Welfare Systems. IOS Press, 2021. http://dx.doi.org/10.3233/stpc200012.

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European Union and governments of the member states are striving to respond to contemporary socio-economic challenges with social investments and enhanced social support, often relying on social innovation in their quest to welfare reforms. However, social policy innovations targeting to improve social welfare, often neglect objective data describing societal phenomena and European citizens’ perspectives and patterns of human behaviour, resulting of their real status of wellbeing. Systematic methods for measuring the impact of innovative social policy reforms and transformations in the provision of social services is an important research challenge in the European welfare system. In this chapter, a comprehensive model of evidence-based social policy making is proposed, driven by dynamic simulation methodologies and data mining techniques to extract evidence from two types of data. On the one hand, objective data coming from a multiplicity of sources, including governmental data and statistical data, are used to capture the interlinked policy domains and their underlying casual mechanisms. On the other hand, it considers behavioural aspects and citizens’ opinions as data analytics emerging from Web 2.0 sources, social media posts, polls and statistical surveys. To combine this multimodal information, our approach suggests a modelling methodology that bases on big data acquisition and processing for the identification of significant factors and counterintuitive interrelations between them, which can be applied in any policy domain. Then, the suggested methodology is applied within the context of a social policy innovation initiative aiming to counter adversities of the migration challenge. The presented model provides a first proof a concept on how ICT and specifically data intelligence can drive social policy reforms. However, further application and validation of the approach for driving policy design and implementation in the future in any domain, is suggested.
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Bhatnagar, Vaibhav, and Ramesh Chandra. "Internet of Things." In Advances in Environmental Engineering and Green Technologies, 81–112. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-5003-8.ch005.

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Internet of things (IoT) is a system of interrelated computing devices, mechanical and digital machines, objects, animals or people that are provided with unique identifiers and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. It has three layers. First layer is data acquisition through sensors and actuators, data transferring using different devices and last is data analysis with different analytic techniques. In this chapter, a conceptual overview of internet of things is mentioned. Different sensors and actuators which are responsible for data acquiring are described with their specification. Networking devices which are responsible for transferring data from sensors to server are also described with their applications. Data analytics techniques like descriptive, predictive, and perspective are also explained. Internet of things is now proven as boon for agriculture development. In the last section, different techniques are explained that are used in information and communication technique-enabled agriculture practices.
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Maradey Lázaro, Jessica Gissella, and Carlos Borrás Pinilla. "Detection and Classification of Wear Fault in Axial Piston Pumps." In Pattern Recognition Applications in Engineering, 286–316. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1839-7.ch012.

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Variable displacement axial piston hydraulic pumps (VDAP) are the heart of any hydraulic system and are commonly used in the industrial sector for its high load capacity, efficiency, and good performance in the handling of high pressures and speeds. Due to this configuration, the most common faults are related to the wear and tear of internal components, which decrease the operational performance of the hydraulic system and increase maintenance costs. So, through data acquisition such as signals of pressure and the digital processing of them, it is possible to detect, classify, and identify faults or symptoms in hydraulic machinery. These activities form the basis of a condition-based maintenance (CBM) program. This chapter shows the developed methodology to detect and classify a wear fault of valve plate taking into account six conditions and the facilities providing by wavelet analysis and ANNs.
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Kasuga, Shigeru, and Tadahiko Katsura. "Seismic Reflection and Refraction Methods." In Continental Shelf Limits. Oxford University Press, 2000. http://dx.doi.org/10.1093/oso/9780195117820.003.0017.

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In order to establish the outer limit of the continental shelf, as defined by article 76 of the Convention (UNDOALOS, 1993), it is necessary for the coastal State to determine the foot of the slope and to know the thickness of the sediments beneath the ocean floor. Geophysical surveys, using seismic techniques, have been extensively used for mapping of subsurface geological structures. In seismic surveys, seismic waves are generated by near-surface artificial explosions at a series of sites; the resulting waves are then recorded digitally and as an analogue record. The regional geological structure and sediment thickness can then be deduced from analysis of the travel times of identifiable wave groups. This chapter briefly outlines the various seismic survey methods with special emphasis on seismic reflection and refraction surveys. It also discusses the most commonly used techniques for determining the subsurface structure, including determination of the velocities of sediments using seismic waves. Seismic reflection surveys have been extensively used for mapping structures in sedimentary sequences, especially as part of exploration programs for oil and gas. Two seismic reflection methods are widely used: singlechannel and multichannel seismic profiling systems. Although the former typically used an analogue recording system with a single receiver, digital recording is now commonly employed. The single-channel method is often employed during shallow reconnaissance exploration or in offshore engineering surveys because it is relatively cheap. But this advantage of the single-channel system is countered by the fact that the maximum depth of penetration of the single-channel system is rather shallow, and it usually does not give information on the deep geological structure or on the seismic velocity of the sedimentary layers. The multichannel method is characterized by digital recording and multiple receivers in a long multichannel streamer cable. Most marine seismic reflection profiling has now shifted from analogue recording of singlechannel data to digital recording of multichannel data, largely because digital recording and processing of large amounts of data improve the signal-to-noise ratio and provide high-quality seismic records. A data acquisition system for reflection profiling consists of three basic subsystems: the energy source, the receiving unit, and the digital recording system.
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Zigh, E. "New Neural Buildings Stereo Matching Method Applied to Very High Resolution Ikonos Images." In Computer Vision, 1155–81. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5204-8.ch048.

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The author introduces a new neural stereo matching method using very high resolution IKONOS images. They do not have the parameters of the images acquisition system or other technological resources like digital elevation model, Lidar, or Laser data. These images contain dense urban scenes including various kinds of roads, cars, vegetation, and builds. The author is interested by buildings; they have different shapes, positions, and intensity levels or colours, so they make a lot of “false matches.” To solve this issue, the authors extracts regions of buildings at first; after that, she proposes a neural stereo matching method. A neural field is chosen due to its good management of imprecision and uncertainty relatives to real problems in general and to this one in particular. To show the effectiveness of a proposed method, the chapter contains at first details about encountered problems, and secondly, it explains the stereo matching process, its different kinds, and a chosen approach; thirdly, it gives obtained results using panchromatic and colour images.
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Conference papers on the topic "Airborne digital data acquisition system"

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Gumetsky, O., O. Pristaiko, I. Stetsko, Edward J. Falkov, and Ivan M. Formanyuk. "Airborne intellectual system for data acquisition and packing." In Digital Photogrammetry and Remote Sensing '95, edited by Eugeny A. Fedosov. SPIE, 1995. http://dx.doi.org/10.1117/12.227887.

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Jinxiang, Yu, Peng Yu, Pan Dawei, and Wang Benkuan. "Development of airborne distributed analog data acquisition system." In 2017 13th IEEE International Conference on Electronic Measurement & Instruments (ICEMI). IEEE, 2017. http://dx.doi.org/10.1109/icemi.2017.8265953.

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Hock, Christian, W. Caspary, H. Heister, J. Klemm, and H. Sternberg. "Kinematic surveying system for automatic GIS-data acquisition." In Digital Photogrammetry and Remote Sensing '95, edited by Eugeny A. Fedosov. SPIE, 1995. http://dx.doi.org/10.1117/12.227858.

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Li, Changyo, and Pengfei Sun. "Design of analog acquisition and storage system about airborne flight data recorder." In 3rd International Conference on Mechatronics, Robotics and Automation. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/icmra-15.2015.60.

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Blazek, Jan, Jindrich Soukup, Barbara Zitova, Jan Flusser, Tomas Tichy, and Janka Hradilova. "Low-cost mobile system for multispectral cultural heritage data acquisition." In 2013 Digital Heritage International Congress (DigitalHeritage). IEEE, 2013. http://dx.doi.org/10.1109/digitalheritage.2013.6743715.

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Boni, Enrico, Andrea Cellai, Alessandro Ramalli, Matteo Lenge, and Stefano Ricci. "Multi-channel Raw-Data Acquisition for Ultrasound Research." In 2014 17th Euromicro Conference on Digital System Design (DSD). IEEE, 2014. http://dx.doi.org/10.1109/dsd.2014.41.

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Li, C. C., C. E. Lin, C. F. Tsai, and S. C. Chiang. "An airborne Collision Avoidance System for low altitude flights using Radio Data System." In 2008 IEEE/AIAA 27th Digital Avionics Systems Conference (DASC). IEEE, 2008. http://dx.doi.org/10.1109/dasc.2008.4702863.

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Chilo, Jose, and Thomas Lindblad. "A Low Cost Digital Data Acquisition System for Infrasonic Records." In 2007 4th IEEE Workshop on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications. IEEE, 2007. http://dx.doi.org/10.1109/idaacs.2007.4488367.

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Anderson, J. T., M. Albers, M. Alcorta, C. Campbell, M. P. Carpenter, C. J. Chiara, M. Cromaz, et al. "A digital data acquisition system for the detectors at gammasphere." In 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference (2012 NSS/MIC). IEEE, 2012. http://dx.doi.org/10.1109/nssmic.2012.6551368.

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Antonyuk, Maksym, Mykhaylo Lobur, and Volodymyr Antonyuk. "Design Digital Data Acquisition and Processing Systems for Embedded System." In 2007 International Conference on Perspective Technologies and Methods in MEMS Design. IEEE, 2007. http://dx.doi.org/10.1109/memstech.2007.4283423.

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Reports on the topic "Airborne digital data acquisition system"

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Opalka, J. SANDUS (SANdia Digital Underground System): MA164 digital data acquisition system specifications. Office of Scientific and Technical Information (OSTI), January 1990. http://dx.doi.org/10.2172/7107583.

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Sabourov, Konstantin, Wolfgang Hennig, and Mark Walby. High speed, multi-channel, user programmable digital data acquisition system. Office of Scientific and Technical Information (OSTI), November 2013. http://dx.doi.org/10.2172/1126925.

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Petersen, Walter. SADDAS; a self-contained analog to digital data acquisition system. Portland State University Library, January 2000. http://dx.doi.org/10.15760/etd.949.

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Brodie, Katherine, Brittany Bruder, Richard Slocum, and Nicholas Spore. Simultaneous mapping of coastal topography and bathymetry from a lightweight multicamera UAS. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41440.

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A low-cost multicamera Unmanned Aircraft System (UAS) is used to simultaneously estimate open-coast topography and bathymetry from a single longitudinal coastal flight. The UAS combines nadir and oblique imagery to create a wide field of view (FOV), which enables collection of mobile, long dwell timeseries of the littoral zone suitable for structure-from motion (SfM), and wave speed inversion algorithms. Resultant digital surface models (DSMs) compare well with terrestrial topographic lidar and bathymetric survey data at Duck, NC, USA, with root-mean-square error (RMSE)/bias of 0.26/–0.05 and 0.34/–0.05 m, respectively. Bathymetric data from another flight at Virginia Beach, VA, USA, demonstrates successful comparison (RMSE/bias of 0.17/0.06 m) in a secondary environment. UAS-derived engineering data products, total volume profiles and shoreline position, were congruent with those calculated from traditional topo-bathymetric surveys at Duck. Capturing both topography and bathymetry within a single flight, the presented multicamera system is more efficient than data acquisition with a single camera UAS; this advantage grows for longer stretches of coastline (10 km). Efficiency increases further with an on-board Global Navigation Satellite System–Inertial Navigation System (GNSS-INS) to eliminate ground control point (GCP) placement. The Appendix reprocesses the Virginia Beach flight with the GNSS–INS input and no GCPs.
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Digital data acquisition and development of geographic information system coverages for use with the public water-supply wells and springs in Tennessee. US Geological Survey, 1993. http://dx.doi.org/10.3133/wri924178.

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