Precise Orbit Determination of HY-2D using DORIS

نویسندگان

چکیده

海洋二号D卫星(HY-2D)是我国第4é¢—æµ·æ´‹åŠ¨åŠ›çŽ¯å¢ƒå«æ˜Ÿï¼Œä¸ºç ”ç©¶HY-2D 卫星的DORIS的定轨精度,本文构建了卫星姿态模型,选择2021å¹´6月5日至17日的DORISç›¸ä½æµ‹é‡æ•°æ®ï¼Œé‡‡ç”¨è§‚æµ‹å€¼åŽ†å ƒé—´å·®åˆ†å’ŒåŠ¨åŠ›å­¦æ–¹æ³•è¿›è¡Œç²¾å¯†å®šè½¨ã€‚å¯¹å®šè½¨ç»“æžœé€šè¿‡è§‚æµ‹å€¼æ‹Ÿåˆæ®‹å·®ã€é‡å å¼§æ®µã€è½¨é“äº’æ¯”å’Œæ¿€å ‰æ£€æ ¸4种手段评估轨道精度,并讨论使用姿态模型和姿态数据两种定轨结果之间差异。结果表明:(1)13天观测值残差RMS均值约为0.355mm/sï¼Œè½¨é“é‡å å¼§æ®µä¸‰ç»´å·®å¼‚çš„RMS小于2.0cm;(2)与CNESçš„ç²¾å¯†è½¨é“ç›¸æ¯”ï¼Œä½¿ç”¨å§¿æ€æ•°æ®ä¸¤è€ åœ¨R、T、N方向上差异的RMS分别为1.02cm、2.92cm和3.11cmï¼Œä½¿ç”¨å§¿æ€æ¨¡åž‹ä¸¤è€ åœ¨R、T、N方向上差异的RMS分别为0.97cm、2.77cm和3.15cm。两种结果接近,表明卫星姿态模型与实测姿态数据符合程度高。(3ï¼‰ç”¨æ¿€å ¸æœ¬æ–‡è®¡ç®—çš„è½¨é“ä¸ŽCNES参考轨道的精度,测距残差的RMS分别为2.38cm和2.24cm,两种轨道精度相当。

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ژورنال

عنوان ژورنال: Journal of remote sensing

سال: 2023

ISSN: ['1007-4619', '2095-9494']

DOI: https://doi.org/10.11834/jrs.20232380