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Sequential Probability Ratio Test for Spacecraft Collision Avoidance Maneuver DecisionsA document discusses sequential probability ratio tests that explicitly allow decision-makers to incorporate false alarm and missed detection risks, and are potentially less sensitive to modeling errors than a procedure that relies solely on a probability of collision threshold. Recent work on constrained Kalman filtering has suggested an approach to formulating such a test for collision avoidance maneuver decisions: a filter bank with two norm-inequality-constrained epoch-state extended Kalman filters. One filter models the null hypotheses that the miss distance is inside the combined hard body radius at the predicted time of closest approach, and one filter models the alternative hypothesis. The epoch-state filter developed for this method explicitly accounts for any process noise present in the system. The method appears to work well using a realistic example based on an upcoming, highly elliptical orbit formation flying mission.
Document ID
20130013571
Document Type
Other - NASA Tech Brief
Authors
Carpenter, J. Russell
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Markley, F. Landis
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 27, 2013
Publication Date
May 1, 2013
Publication Information
Publication: NASA Tech Briefs, May 2013
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking
Report/Patent Number
GSC-16333-1
Distribution Limits
Public
Copyright
Public Use Permitted.
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