15 October 2015 Research on precision windowed track mode for in-orbit calibration on star tracker
Author Affiliations +
Proceedings Volume 9676, AOPC 2015: Optical Design and Manufacturing Technologies; 96760M (2015) https://doi.org/10.1117/12.2199245
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China
Abstract
Implementation of an in-orbit calibration is an effective approach to reduce position error of individual star spot down to arcsec on star tracker. However, without knowledge of variance errors of some error sources, the reduction of such errors to what extent is unclear leading to in-orbit correction inefficiency. Based on Cramer Rao Lower Bound(CRLB) theory, we obtain the minimum variance error of position and make an accurate definition of precision windowed track mode for in-orbit calibration. After that, the error constraints on proper motion, velocity aberration, drift in focal length and other factors are studied in details. Imposing proper restrictions on those parameters, in-orbit correction of star tracker could approach CRLB accuracy.
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jun Zhang, Jun Zhang, Yun-cai Hao, Yun-cai Hao, Li Wang, Li Wang, } "Research on precision windowed track mode for in-orbit calibration on star tracker", Proc. SPIE 9676, AOPC 2015: Optical Design and Manufacturing Technologies, 96760M (15 October 2015); doi: 10.1117/12.2199245; https://doi.org/10.1117/12.2199245
PROCEEDINGS
5 PAGES


SHARE
Back to Top