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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Wei Zheng Houtse Hsu Min Zhong Meijuan Yun |
| Copyright Year | 2004 |
| Abstract | First, a new observation equation of a satellite from the intersatellite range-rate interpolation approach (IRRIA) is created by inserting the precise intersatellite range-rate measurements into the line-of-sight component of the orbital velocity difference vector. Second, by a comparison of the two-point, four-point, six-point, and eight-point interpolation formulas, the accuracy of the Earth's gravitational field is substantially improved using the six-point IRRIA formula due to an optimum signal-to-noise ratio. Third, a new Gravity Recovery and Climate Experiment (GRACE) satellite-only Earth gravity field model WHIGG-GEGM02S is produced by GRACE-Level-1B real data during the year 2009 using the IRRIA, and the cumulative geoid height error and cumulative gravity anomaly error are 1.140 ×10-1 m and 1.807 ×10-6 m/s2 at degree 120, respectively. Finally, the new WHIGG-GEGM02S model is much closer to the existing GGM02S model by a comparison of the root mean square of the geoid height differences between the global positioning system/leveling observations and the existing seven GRACE global gravity field models. |
| Sponsorship | IEEE Geoscience and Remote Sensing Society |
| Starting Page | 422 |
| Ending Page | 426 |
| Page Count | 5 |
| File Size | 343147 |
| File Format | |
| ISSN | 1545598X |
| Volume Number | 9 |
| Issue Number | 3 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-05-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Earth Gravity Satellites Data models Accuracy Global Positioning System Mathematical model WHIGG-GEGM02S model Global positioning system (GPS)/leveling Gravity Recovery and Climate Experiment (GRACE) intersatellite range-rate interpolation approach (IRRIA) Newton's interpolation formula |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Geotechnical Engineering and Engineering Geology |
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