摘要
介绍测量数据处理中病态问题的岭估计思想及确定岭参数的方法。引入预处理共轭梯度法求解病态法方程组,说明算法的基本原理和它能有效减弱病态性的原因。用一个GPS差分动态定位的实例,通过与不同岭估计方法的对比分析,验证该方法是一个有效的数值迭代算法。
The ridge estimation and determination of ridge parameter in ill-posed problem in surveying data processing are briefly introduced.We bring the preconditioned conjugate gradient to solve the ill-posed normal equation,and the basic principle and its ability to diminish the illness of this algorithm are illustrated first.Then it is applied to a kinematic DGPS and it proves to be an effective iterative algorithm through comparison with different ridge estimations.
出处
《测绘工程》
CSCD
2010年第4期60-63,共4页
Engineering of Surveying and Mapping
基金
国家自然科学基金资助项目(40574003
40874005)
