摘要
为了解决采用GPS观测数据求解块体欧拉矢量过程中可能出现的矩阵病态问题,本文介绍应用L曲线法求解块体旋转的欧拉矢量,并对计算结果进行了误差估计;最后通过实例解算,表明该方法求解结果精度高,得到点位的水平运动速度残差南北向85%,东西向79%以上在1mm以内,GPS观测速度与理论速度残差可用来分析块体内部的变形特征。
With the development of space geodesy, more and more observations can be used to inverse the Euler vector of the plate. However, ill-condition problem may be found in the vectors estimation which relates to rotation of Eurasia plate. In order to solve the problem, the paper introduced L-curve method and estimated the errors of the results. The experiment showed that the precision of plate Euler parameter estimated by L-curve method was very high. The residual velocity could be used to analyze the internal deformation characteristics of the block.
出处
《测绘科学》
CSCD
北大核心
2011年第6期37-38,12,共3页
Science of Surveying and Mapping
基金
国家自然科学基金(40974062)
地震行业科研专项(200908029)
