验后平差方法在Geosat/GM卫星测高数据处理中的应用  

The Application of Posteriori Compensation Theory of Error in Altimeter Data Set from Geosat/GM Crossover Adjustment

作　　者：刘传勇[1] 暴景阳[2] 黄谟涛[1] 欧阳永忠[1] 陆秀平[1] 李春菊[3] 张献[3] 

机构地区：[1]海军海洋测绘研究所,天津300061 [2]海军大连舰艇学院,辽宁大连116018 [3]海军出版社,天津300450

出　　处：《海洋测绘》2008年第1期5-8,共4页Hydrographic Surveying and Charting

基　　金：国家海洋专项资助项目

摘　　要：为了消除多代卫星测高数据之间的不协调性,利用两步处理法对Geosat/GM正常点海面高数据进行自交叉点平差及与T/P卫星测高数据联合平差,发现误差模型的系数计算出现异常,通过分析误差模型及正常点海面高数据的分布特征,找出了出现异常的原因,对计算方法进行改进后,大大提高了计算结果的稳定性和可靠性。In order to eliminate the inconsistency of the existing data from multi-satellite missions, we use a new method for the crossover adjustment which is modified to a two steps processing based on the a posteriori compensation theory of error. The theory of two steps processing used in Geosat/GM crossover point adjustment. Statistics of crossover point SSH differences before and after crossover adjustment is anomaly, Based on an analysis of the orbit theory of Geosat/Gm altimeter satellite, the result show this is Rungel phenomenon. A modified compute model for crossover adjustment from altimeter data is proposed. The new solution procedure is used to both local and global crossover adjustment problem. The computation results are used to prove the efficiency and reliability of the modified method .

关 键 词：卫星测高 交叉点平差 龙格现象 

分 类 号：P228.3[天文地球—大地测量学与测量工程]