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논문 기본 정보

자료유형
학술저널
저자정보
김용래 (Department of Aerospace Engineering, Korea Aerospace University, Gyeonggi-do 10540, Korea) 이상철 (Mission Operation and Infrastructure Service Division (2), Korea Aerospace Research Institute, Daejeon 34133, South Korea) 김정래 (Department of Aerospace Engineering, Korea Aerospace University, Gyeonggi-do 10540, Korea)
저널정보
사단법인 항법시스템학회 Journal of Positioning, Navigation, and Timing Journal of Positioning, Navigation, and Timing Vol.13 No.2
발행연도
2024.6
수록면
199 - 206 (8page)
DOI
10.11003/JPNT.2024.13.2.199

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초록· 키워드

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The GEO-KOMPSAT-2A (GK2A) satellite, which was launched in December 2018, carries weather observation payloads and uses the image navigation and registration system to calibrate the observation images. The calibration system requires accurate orbit prediction data and depends on the accuracy of the orbit determination accuracy. In order to find a possible way to improve the current orbit determination accuracy of the GK2A flight dynamic subsystem module, orbit determination software was developed to independently evaluate the orbit determination accuracy. A comprehensive satellite dynamic model is applied for a batch-type least squares filter. When determining the orbit, thrust firing during station-keeping maneuvers and wheel-off loading maneuvers is taken into account. One month of GK2A ranging data were processed to estimate the satellite position on a daily basis. The orbit determination error was evaluated by comparing estimates during overlapping estimation intervals.

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