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http://dx.doi.org/10.5139/JKSAS.2004.32.4.043

Performance Analysis of the KOMPSAT-1 Orbit Determination Using GPS Navigation Solutions  

Kim, Hae-Dong (한국항공우주연구원 지상수신관제그룹)
Choi, Hae-Jin (한국항공우주연구원 지상수신관제그룹)
Kim, Eun-Kyou (한국항공우주연구원 지상수신관제그룹)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.32, no.4, 2004 , pp. 43-52 More about this Journal
Abstract
In this paper, the performance of the KOMPSAT-1 orbit determination (OD) accuracy at the ground station was analyzed by using the flight data. The Bayesian least squares estimation was used for the orbit determination and the assessment of the orbit accuracy was evaluated based on orbit overlap comparisons. We also compared the result from OD using GPS navigation solutions with NORAD TLE and the result from OD using range data. Furthermore, the effect of observation type and OBT drift on the accuracy was investigated. As a consequence, It is shown that the OD accuracy using only GPS position data is on the order of 5m RMS (Root Mean Square) with 4 hrs arc overlap for the 30hr arc and the GPS velocity data is not proper as a observation for the OD due to its inferior quality. The significant deterioration of the accuracy due to the critical clock bias was not founded by means of the comparison of OD result from other observations.
Keywords
KOMPSAT-1; GPS Navigation Solutions; Orbit Determination; Overlap Method;
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Times Cited By KSCI : 1  (Citation Analysis)
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