Relative Position Error Analysis for Mars Probes
Abstract: The relative angular
position error covariance model of two deep space probes is propagated based on
the error covariance analysis method, and is used for the relative angular
positionerror analysis for multiple deep space probes. The differential time
delay model of Same BeamInterferometry (SBI) about the relative right ascension
and relative declination of two deep space probes is established, and the
information matrixes of two ground-based baseline differential time delay measurements
are obtained. The relative angular position error covariance is established,
and the influence of measurement error and measurement geometry on relative
angular position error is analyzed. The results show that in appropriate
measurement geometry the relative right ascension and relative declination
error of Mars probe are in order of 0.1nrad when the measurement error is in
order of picosecond.
Author: Shaowu Chen, Gang Ji,
Dezhen Xu, Haitao Li, Guangliang Dong
Journal Code: jptkomputergg160124
