TeleKnoSys Interactive Tool for a God's Eye View of Flight Test Experiments

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Description

Flight test vehicle telemetry can be visualized in the field using existing dual-processor desktop computing technology. Our results show that processor speed allows more robust sensor analysis techniques, like Kalman filtering. In this case we used only 15% of the analysis time available within each major frame. The 10-15 Hz visualization rates that are possible with scenes that contain tens of thousands of polygons are too slow for state-of-the-art flight simulators, but provide a wealth of information from real-time flight vehicles. A newer version of the APL decommutation system can time-tag minor frames, which minimizes data loss. Specifically, we can ... continued below

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9 p.

Creation Information

Ashcraft, G.W.; Giron, J.W.; Platzbecker, M.R.; Ryerson, D.E. & Sandison, D.R. June 14, 1999.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

Flight test vehicle telemetry can be visualized in the field using existing dual-processor desktop computing technology. Our results show that processor speed allows more robust sensor analysis techniques, like Kalman filtering. In this case we used only 15% of the analysis time available within each major frame. The 10-15 Hz visualization rates that are possible with scenes that contain tens of thousands of polygons are too slow for state-of-the-art flight simulators, but provide a wealth of information from real-time flight vehicles. A newer version of the APL decommutation system can time-tag minor frames, which minimizes data loss. Specifically, we can use all of the minor frames in the first major frame collected after a dropout. Sending sporadic minor frames as they are collected may help fill the data gap associated with large dropouts, but an unbuffered data collection scheme reduces the time slice available for data analysis. To avoid a scaled earth model and single precision vehicle position image jitter, we are implementing Vega's Large Area Database Manager (LADBM), which provides double precision position calculations and can dynamically shift the database origin to a local area-of-interest. As computers and graphics accelerators continue to increase in speed and power, and Telemetry System development gets increasingly more complex acquiring tremendous amounts of data, interactive 3D visualization tools will become essential in the understanding of these data sets.

Physical Description

9 p.

Notes

OSTI as DE00007875

Medium: P; Size: 9 pages

Source

  • International Telemetering Conference, Las Vegas, NV (US), 10/25/1999--10/28/1999

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Identifier

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  • Report No.: SAND99-0271C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 7875
  • Archival Resource Key: ark:/67531/metadc723236

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • June 14, 1999

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 11, 2017, 8:10 p.m.

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Ashcraft, G.W.; Giron, J.W.; Platzbecker, M.R.; Ryerson, D.E. & Sandison, D.R. TeleKnoSys Interactive Tool for a God's Eye View of Flight Test Experiments, article, June 14, 1999; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc723236/: accessed May 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.