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| 引用本文： | 富宇宁,许才军.ˮ�������������Ϸ�����Ȩ������о�[J].大地测量与地球动力学,2007,27(2):68-74. |
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| 作者姓名： | 富宇宁 许才军 |
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| 作者单位： | 武汉大学测绘学院,武汉,430079;武汉大学地球空间环境与大地测量教育部重点实验室,武汉,430079 |
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| 基金项目： | 国家自然科学基金(40574006)，新世纪优秀人才支持计划(NCET-04-0681)，中国科学院动力大地测量学重点实验室基金(L04-02) |
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| 摘 要： | ????????????????????????????????????????????????????????WTBX]??????????????????????????????????????????????????λ?????,????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????з??????????????????????????????????????????????????????????????????
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| 关 键 词： | ??????? ??????????????? ????????? ???????????????? ????? |
| 文章编号： | 1671-5942(2007)02-0068-07 |
| 修稿时间： | 2006年9月10日 |
ON RELATIVE WEIGHT PROBLEM IN JOINT INVERSION USING LEVELLING AND GRAVITY DATA |
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| Fu Yuning,Xu Caijun.ON RELATIVE WEIGHT PROBLEM IN JOINT INVERSION USING LEVELLING AND GRAVITY DATA[J].Journal of Geodesy and Geodynamics,2007,27(2):68-74. |
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| Authors: | Fu Yuning Xu Caijun |
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| Institution: | 1)School of Geodesy and Geomatics,Wuhan University,Wuhan 4300792)The Key Laboratory of Geospace Environment and Geodesy, Ministry of Education, School of Geodesy and Geomatics,Wuhan University, Wuhan 430079 |
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| Abstract: | How to determine the relative weight ratio factor λ is an important problem when joint inversion is carried out by use of two or more than two types of observed data. Several means which are used to determine λ in joint inversion using leveling and gravity data are presented, and then these means are discussed through an example of inversing the parameters of a fault and its displacement with the simulated levelling and gravity data. The results show that the normalization is important in the joint inversion. The inversion result is good by use of the relative weight ratio λ determined by Helmert variance estimation combining priori posterior information.In addition,the distribution of observation stations and the number of inversed parameters well affect the value of λ. |
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| Keywords: | joint inversion levelling and gravity observation relative weight ratio factor Helmert variance estimation genetic algorithm |
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