利用谱组合法实现GOCE卫星的SST和SGG数据融合处理

刘晓刚; 常宜峰; 孙文; 李新星

doi:10.3799/dqkx.2017.037

Volume 42 Issue 3

Mar. 2017

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Article Navigation > Earth Science > 2017 > 42(3): 471-478

Liu Xiaogang, Chang Yifeng, Sun Wen, Li Xinxing, 2017. Syncretic Processing of GOCE Satellite's SST and SGG Data Based on Spectral Combination Method. Earth Science, 42(3): 471-478. doi: 10.3799/dqkx.2017.037

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Liu Xiaogang, Chang Yifeng, Sun Wen, Li Xinxing, 2017. Syncretic Processing of GOCE Satellite's SST and SGG Data Based on Spectral Combination Method. Earth Science, 42(3): 471-478. doi: 10.3799/dqkx.2017.037

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Syncretic Processing of GOCE Satellite's SST and SGG Data Based on Spectral Combination Method

doi: 10.3799/dqkx.2017.037

Liu Xiaogang^{1,2,3,4
,},
Chang Yifeng^2,5,
Sun Wen⁶,
Li Xinxing⁷

1.
State Key Laboratory of Geo-Information Engineering, Xi'an 710054, China
2.
Xi'an Research Institute of Surveying and Mapping, Xi'an 710054, China
3.
State Key Laboratory of Geodesy and Earth's Dynamics, Wuhan 430077, China
4.
Military Key Laboratory of Surveying, Mapping and Navigation of Engineering, Information Engineering University, Zhengzhou 450052, China
5.
95948 Unit of PLA, Lanzhou 732750, China
6.
61243 Unit of PLA, Urumqi 830006, China
7.
Institute of Geospatial Information, Information Engineering University, Zhengzhou 450052, China

Received Date: 2016-09-22
Publish Date: 2017-03-15

Abstract

Abstract

Syncretic processing of various types of gravimetric data is one of the challenging and hot issues in the modeling of Earth's gravitational field model (EGM). The general expressions of the spectral weight and spectral combination of the united-processing of various types of gravimetric data are presented in this paper. What's more, the detailed expressions of spectral combination formulae and the corresponding spectral weights in the EGM determination using satellite-to-satellite tracking (SST) data and satellite gravity gradient (SGG) data of GOCE satellite are derived, based on spherical harmonic analysis method. Experimentation results show that the EGM computed by SGG data is improved by SST data in the low order, whatever the data are simulated or surveyed. It is concluded that as many types of gravimetric data as possible should be combined together in the data processing in order to improve the quality and reliability with widening scope and to improve the precision and spatial resolution of the computational results.

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References(37)

References

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Syncretic Processing of GOCE Satellite's SST and SGG Data Based on Spectral Combination Method

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