大地测量与地球动力学2012，Vol.32Issue(2)：120-123,127,5.
顾及随机误差和局部变形误差的坐标组合转换法
COMBINED METHOD FOR DATUM TRANSFORMATION CONSIDERING STOCHASTIC ERROR AND LOCAL DEFORMATION
摘要
Abstract
The different coordinate systems mean different geophysical concept. In the geodetic network the local deformation and accumulation error exist, and there are stochastic value in the common points with the different coordinate. So the coordinate transformation from low precise coordinate frame to the high one can not approve a high precise reference frame after this transformation. A combined method based on variance component estimation using similarity transformation and regressive approximating is presented. For the local error accumulation and distortion and the stochastic value of the common points, the accuracy of coordinate system is improved after the transformation with the combined method from Xi' an Geodetic Coordinate System 1980(XAS80) to China Geodetic Coordinate System 2000 (CGCS2000).关键词
坐标转换/组合变换/方差分量/2000国家大地坐标系/1980西安坐标系Key words
coordinate transformation/ combined method/ variance component/ XAS80/ CGCS2000分类
天文与地球科学引用本文复制引用
曾安敏,张丽萍..顾及随机误差和局部变形误差的坐标组合转换法[J].大地测量与地球动力学,2012,32(2):120-123,127,5.基金项目
国家自然科学基金(40774001,40841021,41020144004) （40774001,40841021,41020144004）
国家863基金(2007AA12Z331) （2007AA12Z331）
