| 多代卫星测高数据联合平差及重力场反演 |
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| 引用本文： | 黄谟涛, 王瑞, 翟国君, 欧阳永忠. 多代卫星测高数据联合平差及重力场反演[J]. 武汉大学学报 ( 信息科学版), 2007, 32(11): 988-993. |
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| 作者姓名： | 黄谟涛 王瑞 翟国君 欧阳永忠 |
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| 作者单位： | 1 天津海洋测绘研究所,天津市友谊路40号,3000612 海军工程大学,武汉市解放大道717号,4300333 武汉大学测绘学院,武汉市珞喻路129号,430072 |
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| 摘 要： | 为了解决多代卫星测高数据之间的不协调问题,基于误差验后补偿理论,提出了将传统的交叉点平差整体解法简化为两步处理法,即首先使用条件平差法对交叉点观测方程进行平差计算,然后沿测高轨迹进行海面高滤波和推估。使用新方法可大大简化联合平差的计算过程,且有利于提高计算结果的稳定性和可靠性,对规则和不规则的区域网和全球网交叉点平差问题都同样适用。实际算例证明了新方法的有效性。
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| 关 键 词： | 卫星测高 数据处理 交叉点平差 重力异常 |
| 文章编号： | 1671-8860（2007）11-0988-06 |
| 收稿时间： | 2007-08-24 |
| 修稿时间： | 2007-08-24 |
Integrated Data Processing for Multi-satellite Missions and Recovery of Marine Gravity Field |
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| HUANG Motao, WANG Rui, ZHAI Guojun, OUYANG Yongzhong. Integrated Data Processing for Multi-satellite Missions and Recovery of Marine Gravity Field[J]. Geomatics and Information Science of Wuhan University, 2007, 32(11): 988-993. |
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| Authors: | HUANG Motao WANG Rui ZHAI Guojun OUYANG Yongzhong |
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| Affiliation: | 1 Naval Institute of Hydrographic Surveying and Charting,40 Youyi Road,Tianjin 300061,China 2 Naval University of Engineering,717 Jiefang Road,Wuhan 430033,China 3 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China |
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| Abstract: | In order to eliminate the inconsistency of the existing data from multi-satellite missions,a new method is proposed for optimal combination of the altimeter data.In the data management system,the crossover adjustment is modified to a two-step processing based on the posteriori compensation theory of error,i.e.the crossover adjustment of condition equations is made in the first step,and the filtering and prediction of adjustment corrections done along each single pass in the second step.Using the new approach can simplify the solution procedure of crossover adjustment greatly,and the stability and reliability of its computation results can be expected.The new method can be used to both local and global crossover adjustment problem.Finally,practical altimeter data set from Geosat,ERS-1,ERS-2 and T/P is used as a case study to prove the efficiency of the integrated data processing method. |
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| Keywords: | satellite altimetry data processing crossover adjustment gravity anomalies |
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