摘要
空间直角坐标转换中常采用Bursa模型来求解坐标转换参数,但往往因两坐标系中公共点的精度不高、分布不均匀而导致在转换参数求取过程中出现模型病态的问题。本文探讨了运用岭估计的方法来解决这一病态问题,并与最小二乘估计相比较,验证了岭估计在解决此类病态问题方面的优越性。
Bursa model is often used to solve coordinate transformation parameters in cpatial cartesian coordinate conversion, low accuracy and unevenly distributed of the common coordinates, which could strike morbid question in the process of solving conversion parameters. In this paper,Ridge Estimation Method is used to solve this problem,and compared with the least squares estimation to verify the superiority of Ridge in solving ill-posed problem.
出处
《科技传播》
2013年第1期110-111,共2页
Public Communication of Science & Technology
关键词
岭估计
病态问题
转换参数
BURSA模型
Ridge Estimate
Ill-posed Problem
Transformation Parameters
Bursa Model
