多卫星综合数据处理与海洋重力场恢复

武汉大学学报(信息科学版) Pub Date : 2008-04-01 DOI:10.3319/TAO.2008.19.1-2.103(SA)

H. Motao, Guojun Zhai, O. Yongzhong, L. Xiuping, Chuanyong Liu, Rui Wang

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引用次数: 12

摘要

为了消除多星任务现有高度计数据的不一致性，提出了一种高度计数据优化组合的新方法。在数据管理系统中，基于误差后验补偿理论，将交叉平差改为两步处理;即第一步对条件方程进行交叉平差，第二步对平差修正沿每单道进行滤波和预测。采用该方法可大大简化交叉平差的计算过程，且其解具有较高的稳定性和可靠性。该方法既适用于局部平差问题，也适用于全局平差问题。最后，以Geosat、ERS-1、ERS-2和TOPEX/POSEIDON的实际高度计数据集(T/P)为例，验证了综合数据处理方法的有效性。

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Integrated data Processing for Multi-Satellite Missions and recovery of Marine Gravity Field

In order to eliminate the inconsistency of the existing data from multi-satellite missions, we propose a new method for optimal combination of altimeter data. In our data management system, the crossover adjustment is modified to two-step processing based on the a 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 greatly the computational procedure of crossover adjustment, and the stability and reliability of its solution can be expected. The new method can be used for both local and global crossover adjustment problems. Finally, a practical altimeter dataset from Geosat, ERS-1, ERS-2, and TOPEX/POSEIDON (T/P) is used as a case study to prove the efficiency of the integrated data processing method.

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来源期刊

武汉大学学报(信息科学版)

CiteScore

2.70

自引率

0.00%

发文量

7114

期刊介绍： Geomatics and Information Science of Wuhan University is a surveying and mapping academic journal supervised by the Ministry of Education and sponsored by Wuhan University. It is also a source journal included in EI (Engineering Index). Since its founding in 1957, the journal has been publicly issued in the form of a monthly journal, originally named "Journal of Wuhan University of Surveying and Mapping". At present, the journal is edited by Academician Li Jiancheng. The purpose of this journal is to utilize China's advantages in surveying and mapping disciplines, serve both the domestic and international communities, publish with an open attitude, and strive to become China's excellent surveying and mapping journal brand. The journal publishes innovative and highly valuable surveying and mapping academic achievements, showcases the latest and highest level of surveying and mapping research in China, and aims to promote academic exchanges in surveying and mapping, guide the research direction of surveying and mapping science, promote the progress of related science and technology, and serve the development of the entire surveying and mapping industry.