OBSERVATIONS OF GEOGRAPHICALLY CORRELATED ORBIT ERRORS FOR TOPEX POSEIDON USING THE GLOBAL POSITIONING SYSTEM

被引：22

作者：

CHRISTENSEN, EJ ^{[1
]}

HAINES, BJ ^{[1
]}

MCCOLL, KC ^{[1
]}

NEREM, RS ^{[1
]}

机构：

[1] NASA,GODDARD SPACE FLIGHT CTR,SPACE GEODESY BRANCH,GREENBELT,MD 20771

来源：

GEOPHYSICAL RESEARCH LETTERS | 1994年 / 21卷 / 19期

关键词：

D O I：

10.1029/94GL02191

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We have compared Global Positioning System (GPS)-based dynamic and reduced-dynamic TOPEX/Poseidon orbits over three 10-day repeat cycles of the ground-track. The results suggest that the prelaunch joint gravity model (JGM-1) introduces geographically correlated errors (GCEs) which have a strong meridional dependence. The global distribution and magnitude of these GCEs are consistent with a prelaunch covariance analysis, with estimated and predicted global rms error statistics of 2.3 and 2.4 cm rms, respectively. Repeating the analysis with the post-launch joint gravity model (JGM-2) suggests that a portion of the meridional dependence observed in JGM-1 still remains, with a global rms error of 1.2 cm.

引用

页码：2175 / 2178

页数：4

共 8 条

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