摘要
针对GPS RTK测量中坐标系转换参数因选择的公共点不同而导致转换误差的问题,该文提出了一种坐标转换残差改正方法:利用测区任意已知点进行"点校正"来求取坐标转换参数,通过测定各个已知点的坐标转换残差,建立残差改正模型,对测量结果施加残差改正,减小坐标转换参数误差对测量结果精度的影响。实例应用表明:所提出的坐标转换方法简便可行且便于编程实现,对于提高GPS-RTK测量精度和可靠性具有实用价值。
Aiming at the the problem that the transformation between coordinate systems exists errors in GPS RTK surveying when the parameters select different common points,the paper proposed a method of coordinate transformation and residual error correction,in order to solve the error problem of coordinate transformation parameters in GPS-RTK measurement：the parameters was calculated through the point correction on any known points,and the residual error correction model was established to correct the errors of the survey by measuring the coordinate transformation residual errors of the known points,in order to reduce the negative impact of the coordinate transformation parameter errors on the precision of the survey.Practical application showed that this method would be more simple and more convenient in programming implementation,and could provide a reference for improving the accuracy and reliability in GPS-RTK measurement.
出处
《测绘科学》
CSCD
北大核心
2015年第11期155-158,共4页
Science of Surveying and Mapping
关键词
GPS-RTK
坐标转换
平面四参数
残差改正
GPS-RTK
coordinate transformation
plane of four parameters
residual correction
