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Accuracy Analysis of GEO-KOMPSAT-2 Onboard Orbit Generator  

Park, Bong-Kyu (한국항공우주연구원 정지궤도위성체계팀)
Choi, Jae Dong (한국항공우주연구원 정지궤도위성체계팀)
Ahn, Sang Il (한국항공우주연구원 위성지상시스템개발팀)
Kim, Bang Yeop (한국항공우주연구원 정지궤도위성관제팀)
Publication Information
Aerospace Engineering and Technology / v.11, no.2, 2012 , pp. 19-25 More about this Journal
Abstract
GEO-KOMPSAT2 shall provide higher quality of image than the COMS and uses star tracker instead of earth sensor, which requires precise onboard orbit information. This requires precise on-ground orbit determination. For COMS, orbit determination is performed using the ranging data obtained from tracking system located in DAEJON. For accurate orbit determination of GEO-KOMPSAT2, KARI is building a secondary tracking station in CHUUK Islands. In this paper, the achievable accuracy of table based onboard orbit parameter generator which interpolates orbit data obtained from on-ground orbit determination using tracking data collected from two ground stations. Two types of approaches have been applied; covariance analysis and numerical analysis. By combining two analysis results, total orbit error has been estimated.
Keywords
GEO-KOMPSAT2; Geostationary Satellite; Orbit Determination Accuracy; Onboard Orbit Propagator; Covariance Analysis;
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  • Reference
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