| タイトル | Observations of geographically correlated orbit errors for TOPEX/Poseidon using the global positioning system |
| 著者（英） | Haines, B. J.; Christensen, E. J.; Mccoll, K. C.; Nerem, R. S. |
| 著者所属（英） | NASA Headquarters; Jet Propulsion Lab., California Inst. of Tech.; NASA Goddard Space Flight Center |
| 発行日 | 1994-09-15 |
| 言語 | eng |
| 内容記述 | 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 global rms error of 1.2 cm. |
| NASA分類 | SPACECRAFT INSTRUMENTATION |
| レポートNO | 95A78927 |
| 権利 | Copyright |
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