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Proceedings Paper

3D position and velocity vector computations of objects jettisoned from the international space station using close-range photogrammetry approach
Author(s): Valeri Papanyan; Edward Oshel; Daniel Adamo
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Paper Abstract

Measurement of the jettisoned object departure trajectory and velocity vector in the International Space Station (ISS) reference frame is vitally important for prompt evaluation of the object's imminent orbit. We report on the first successful application of photogrammetric analysis of the ISS imagery for the prompt computation of the jettisoned object's position and velocity vectors. As post-EVA analyses examples, we present the Floating Potential Probe (FPP) and the Russian "Orlan" Space Suit jettisons, as well as the near-real-time (provided in several hours after the separation) computations of the Video Stanchion Support Assembly Flight Support Assembly (VSSA-FSA) and Early Ammonia Servicer (EAS) jettisons during the US astronauts space-walk. Standard close-range photogrammetry analysis was used during this EVA to analyze two on-board camera image sequences down-linked from the ISS. In this approach the ISS camera orientations were computed from known coordinates of several reference points on the ISS hardware. Then the position of the jettisoned object for each time-frame was computed from its image in each frame of the video-clips. In another, "quick-look" approach used in near-real time, orientation of the cameras was computed from their position (from the ISS CAD model) and operational data (pan and tilt) then location of the jettisoned object was calculated only for several frames of the two synchronized movies.

Paper Details

Date Published: 22 April 2008
PDF: 12 pages
Proc. SPIE 6958, Sensors and Systems for Space Applications II, 69580H (22 April 2008); doi: 10.1117/12.773347
Show Author Affiliations
Valeri Papanyan, NASA Johnson Space Ctr. (United States)
Jacobs Technology (United States)
Edward Oshel, NASA Johnson Space Ctr. (United States)
Jacobs Technology (United States)
Daniel Adamo, United Space Alliance, LLC (United States)

Published in SPIE Proceedings Vol. 6958:
Sensors and Systems for Space Applications II
Richard T. Howard; Pejmun Motaghedi, Editor(s)

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