| 联合GRACE卫星轨道及距离变率数据反演地球重力场方法研究 |
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| 引用本文： | 张兴福,沈云中.联合GRACE卫星轨道及距离变率数据反演地球重力场方法研究[J].大地测量与地球动力学,2011,31(2):66-70. |
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| 作者姓名： | 张兴福 沈云中 |
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| 作者单位： | 1)广东工业大学测绘工程系，广州 510006;2)同济大学测量与国土信息工程系，上海 210092 |
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| 基金项目： | 中国科学院动力大地测量学重点实验室开放基金(L09-07) |
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| 摘 要： | 基于动力学法,研究联合GRACE卫星精密轨道及距离变率数据反演地球重力场的方法,该方法可对重力位系数及卫星初始状态误差同时进行有效校正.通过对各观测值模拟不同的随机误差,研究了不同精度观测值 联合反演所能达到的精度,以及用相同精度的观测值进行联合反演时不同采样率对反演结果的影响,模拟计算结果表明:联合反演模式下,当距离...
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| 关 键 词： | GRACE卫星 精密轨道 星间距离变率 动力学法 联合反演 |
METHOD OF GRAVITY FIELD INVERSION WITH COMBINING GRACE ORBITS AND RANGE-RATE OBSERVATIONS |
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| Zhang Xingfu,Shen Yunzhong.METHOD OF GRAVITY FIELD INVERSION WITH COMBINING GRACE ORBITS AND RANGE-RATE OBSERVATIONS[J].Journal of Geodesy and Geodynamics,2011,31(2):66-70. |
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| Authors: | Zhang Xingfu Shen Yunzhong |
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| Institution: | Zhang Xingfu 1) and Shen Yunzhong 2) 1)Department of Surveying and Mapping,Guangdong University of Technology,Guangzhou 510006 2)Department of Surveying and Geomatics,Tongji University,Shanghai 200092 |
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| Abstract: | The dynamical method based on the precision orbits and range-rate data of GRACE for recovering gravity field model is discussed,and the gravitational potential coefficients and the satellite's initial state error can be estimated simultaneously with this algorithm.The gravity field models are recovered with the combined observations with different orbits accuracy and different sampling rate range-rate of GRACE,finally the accuracy of gravity field model recovery are analyzed.The simulated results show that ... |
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| Keywords: | GRACE satellite precision orbits range-rate dynamical method combined inversion |
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