摘要
针对空间坐标转换中的转换参数易受到公共点坐标精度的影响,采用稳健估计中的选权迭代法,理论分析和实际验算结果表明,对含有少量粗差的观测值利用选权迭代法可以减弱粗差的影响.获得正常模式下的最优或接近最优的参数估值。
For the problem of transforming parameters in calculating coordinates could be easily affected by coordinate precisions of common points,selecting weight iteration of robust estimation is proposed.It is proved by the theoretical analyses and the practical calculating results that robust estimation can resist or weaken the influence of gross error and acquire the normal mode of the optimal or near optimal parameter estimation.
出处
《北京测绘》
2011年第3期61-63,共3页
Beijing Surveying and Mapping
关键词
稳健估计
粗差
坐标转换.
robust estimation
gross error
coordinate transformation.
