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| Simulation of the Earth's gravitational field recovery from GRACE using the energy balance approach | |
| 作者姓名： | ZHENG Wei LU Xiaolei HSU Houtse SHAO Chenggang LUO Jun WANG Nengchao |
| 作者单位： | Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China,Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China,Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China,Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China,Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China,Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China |
| 摘 要： | Based on the measurement principles of GRACE satellites, the observation equations are set up using the energy balance approach. The Earth's gravitational field complete up to degree and order 120 is recovered applying the preconditioning conjugate gradient iterative approach by numerical simulation. Assuming an accuracy of 1 μms in range-rate measurements of the K-band microwave ranging system, the matching relationships of accuracies of K-band microwave ranging system, SuperSTAR Accelerometer, position vector and velocity vector measurements are investigated. |
| 关 键 词： | the Earth's gravitational field GRACE satellites energy balance approach preconditioning conjugate gradient method. |
Simulation of the Earth's gravitational field recovery from GRACE using the energy balance approach |
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| ZHENG Wei,LU Xiaolei,HSU Houtse,SHAO Chenggang,LUO Jun,WANG Nengchao.Simulation of the Earth''s gravitational field recovery from GRACE using the energy balance approach[J].Progress in Natural Science,2005,15(7):596-601. | |
| Authors: | ZHENG Wei LU Xiaolei HSU Houtse SHAO Chenggang LUO Jun Wang Nengchao |
| Institution: | 1. Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China 2. Department of Mathematics, Huazhong University of Science and Technology, Wuhan 430074, China 3. Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077, China |
| Abstract: | Based on the measurement principles of GRACE satellites, the observation equations are set up using the energy balance approach. The Earth's gravitational field complete up to degree and order 120 is recovered applying the preconditioning conjugate gradient iterative approach by numerical simulation. Assuming an accuracy of 1?m/s in range-rate measurements of the K-band microwave ranging system, the matching relationships of accuracies of K-band microwave ranging system, SuperSTAR Accelerometer, position vector and velocity vector measurements are investigated. |
| Keywords: | the Earth's gravitational field GRACE satellites energy balance approach preconditioning conjugate gradient method |
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