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True covariance simulation of the EUVE (extreme ultra violet explorer) update filterThis paper presents a covariance analysis of the performance and sensitivity of the attitude determination Extended Kalman Filter (EKF) used by the onboard computer (OBC) of the Extreme Ultra Violet Explorer (EUVE) spacecraft. The linearized dynamics and measurement equations of the error states are used in formulating the 'truth model' describing the order of the systems involved. The 'design model' used by the OBC EKF is then obtained by reducing the order of the truth model. The covariance matrix of the EKF which uses the reduced order model is not the correct covariance of the EKF estimation error. A 'true covariance analysis' has to be carried out in order to evaluate the correct accuracy of the OBC generated estimates. The results of such analysis are presented which indicate both the performance and the sensitivity of the OBC EKF.
Document ID
19920022634
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bar-Itzhack, I. Y.
(Technion - Israel Inst. of Tech. Haifa., United States)
Harman, R. R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 6, 2013
Publication Date
February 22, 1990
Publication Information
Publication: Israel Society of Aeronautics and Astronautics, 31st Israel Annual Conference on Aviation and Astronautics
Subject Category
Spacecraft Instrumentation
Accession Number
92N31878
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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