標題: Assessing attitude error of FORMOSAT-3/COSMIC satellites and its impact on orbit determination
作者: Tseng, Tzu-Pang
Hwang, Cheinway
Yang, Shan Kuo
土木工程學系
Department of Civil Engineering
關鍵字: Attitude;Beta angle;FORMOSAT-3/COSMIC;GPS;Kinematic orbit
公開日期: 1-五月-2012
摘要: An attitude determination and control system (ADCS) is critical to satellite attitude maneuvers and to the coordinate transformation from the inertial frame to the spacecraft frame. This paper shows specific sensors in the ADCS of the satellite mission FORMOSAT-3/COSMIC (F3/C) and the impact of the ADCS quality on orbit accuracy. The selection of main POD antenna depends on the beta angles of the different F3/C satellites (for FM2 and FM4) during the inflight phase. In particular, under the eclipse, alternative attitude sensors are activated to replace the Sun sensors, and such a sensor change leads to anomalous GPS phase residuals and a degraded orbit accuracy. Since the nominal attitude serves as a reference for ADCS, the 3-dimensional attitude-induced errors in reduced dynamic orbits over selected days in 2010 show 9.35, 10.78, 4.97, 5.48, 7.18, and 6.89 cm for FM1-FM6. Besides, the 3-dimensional velocity errors induced by the attitude effect are 0.10, 0.10, 0.07, 0.08, 0.09, and 0.10 for FM1-FM6. We analyze the quality of the observed attitude transformation matrix of F3/C and its impact on kinematic orbit determination. With 249 days of GPS in 2008, the analysis leads to the following averaged 3-dimensional attitude-induced orbit errors: 2.72, 2.62, 2.37, 1.90, 1.70, and 1.99 cm for satellites FM1-FM6. Critical suggestions of geodetic payloads for the follow-on mission of F3/C are presented based on the current result. (C) 2012 COSPAR. Published by Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/11536/15990
ISSN: 0273-1177
期刊: ADVANCES IN SPACE RESEARCH
Volume: 49
Issue: 9
結束頁: 1301
顯示於類別:期刊論文


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  1. 000303136900002.pdf