Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACE
The precision of Earth’s gravitational field from GRACE up to degree and order 120 was studied for different inter-satellite ranges using the improved energy conservation principle. Our simulated result shows that; For long wavelength (L ⩽ 20) at degree 20, the cumulative geoid-height error graduall...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2012-02-01
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| Series: | Geodesy and Geodynamics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674984715301087 |
| _version_ | 1819116107225628672 |
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| author | Zheng Wei Hsu Houtse Zhong Min Yun Meijuan Zhou Xuhua |
| author_facet | Zheng Wei Hsu Houtse Zhong Min Yun Meijuan Zhou Xuhua |
| author_sort | Zheng Wei |
| collection | DOAJ |
| description | The precision of Earth’s gravitational field from GRACE up to degree and order 120 was studied for different inter-satellite ranges using the improved energy conservation principle. Our simulated result shows that; For long wavelength (L ⩽ 20) at degree 20, the cumulative geoid-height error gradually decreased with increasing range, from 0. 052 cm for 110 km to 1. 156 times and 1. 209 times as large for 220 km and 330 km, respectively. For medium-wavelength (100 ⩽ L ⩽ 120) at degree 120, the cumulative geoid-height error decreased from 13. 052 cm for 110 km, to 1. 327 times and 1. 970 times as large for the ranges of 220 km and 330 km, respectively; By adopting an optimal range of 220±50 km, we can suppress considerably the loos of precision in the measurement of the Earth’s long-wavelength and medium-wavelength gravitational field. |
| first_indexed | 2024-12-22T05:11:50Z |
| format | Article |
| id | doaj.art-87fddfbdabf24062b8acfea473c14d52 |
| institution | Directory Open Access Journal |
| issn | 1674-9847 |
| language | English |
| last_indexed | 2024-12-22T05:11:50Z |
| publishDate | 2012-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Geodesy and Geodynamics |
| spelling | doaj.art-87fddfbdabf24062b8acfea473c14d522022-12-21T18:37:57ZengKeAi Communications Co., Ltd.Geodesy and Geodynamics1674-98472012-02-0131445110.3724/SP.J.1246.2012.00044Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACEZheng Wei0Hsu Houtse1Zhong Min2Yun Meijuan3Zhou Xuhua4State Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, ChinaState Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, ChinaState Key Laboratory of Geodesy and Earth’s Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, ChinaDepartment of Applied Physics, Wuhan University of Science and Technology, Wuhan 430081, ChinaShanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, ChinaThe precision of Earth’s gravitational field from GRACE up to degree and order 120 was studied for different inter-satellite ranges using the improved energy conservation principle. Our simulated result shows that; For long wavelength (L ⩽ 20) at degree 20, the cumulative geoid-height error gradually decreased with increasing range, from 0. 052 cm for 110 km to 1. 156 times and 1. 209 times as large for 220 km and 330 km, respectively. For medium-wavelength (100 ⩽ L ⩽ 120) at degree 120, the cumulative geoid-height error decreased from 13. 052 cm for 110 km, to 1. 327 times and 1. 970 times as large for the ranges of 220 km and 330 km, respectively; By adopting an optimal range of 220±50 km, we can suppress considerably the loos of precision in the measurement of the Earth’s long-wavelength and medium-wavelength gravitational field.http://www.sciencedirect.com/science/article/pii/S1674984715301087GRACEinter-satellite rangecolored noiseEarth’s gravitational fieldenergy conservation principle |
| spellingShingle | Zheng Wei Hsu Houtse Zhong Min Yun Meijuan Zhou Xuhua Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACE Geodesy and Geodynamics GRACE inter-satellite range colored noise Earth’s gravitational field energy conservation principle |
| title | Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACE |
| title_full | Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACE |
| title_fullStr | Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACE |
| title_full_unstemmed | Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACE |
| title_short | Effect of different inter-satellite range on measurement precision of Earth’s gravitational field from GRACE |
| title_sort | effect of different inter satellite range on measurement precision of earth s gravitational field from grace |
| topic | GRACE inter-satellite range colored noise Earth’s gravitational field energy conservation principle |
| url | http://www.sciencedirect.com/science/article/pii/S1674984715301087 |
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