Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006acasn..47..467x&link_type=abstract
Acta Astronomica Sinica, vol. 47, no. 4, p. 467-474
Astronomy and Astrophysics
Astronomy
Astrometry: Autonomous Orbit Determination, Kalman Filter, Onboard Gps
Scientific paper
With simulated onboard GPS data covering 100 days, a test of orbit determination strategy using Kalman filter is performed. The study focuses mainly on three problems: the secular stability of orbit determination by the mean of reduced dynamic model and reduced state transition matrix, the effect of model error covariance Q on the precision of orbit determination, and the precision of reduced Kalman orbit determination by comparing with least square solution. Three conclusions corresponding to these problems are given: The secular stability of orbit determination isn't changed by means of reduced dynamic model and reduced state transition matrix; the selection of model error covariance Q has a loose range; the precision of reduced Kalman orbit determination is at the same level with the precision of least square solution.
Jia Pei-Zhang
Xiong Yong-Qing
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