大地测量与地球动力学2013，Vol.33Issue(2)：105-109,5.
公共点分布对坐标转换精度的影响
ACCURACY OF COORDINATE TRANSFER INFLUENCED BY DIFFERENT DISTRIBUTIONS OF COMMON POINTS
摘要
Abstract
In order to calculate the transformation of Cartesian coordinates, we need to know the two sets of co ordinates of the common points, select different common points to establish the corresponding error equation and ob tain the 7-parameters or 13-parameters of the transformation. We made the research on comparing estimated points calculated by transformation parameters with designed points in outer-space and inner-space around these common points through the simulation of 165 survey points in 11 rows and 15 columns of two sets coordinates. Taking the Euclid distance of the two sets of points as the basic surface fitting data to establish the surface model for calculating accuracy and with modified Shepard' s method, we have abtained some general distribution law about the accuracy of calculating coordinate points.关键词
坐标转换/公共点/解算精度/分布/Shepard模型Key words
coordinate transformation/ common points/ calculaton accuracy/ distribution/ Shepard' s model分类
天文与地球科学引用本文复制引用
周跃寅,潘国荣..公共点分布对坐标转换精度的影响[J].大地测量与地球动力学,2013,33(2):105-109,5.基金项目
高等学校博士学科点专项基金(博导类)(20120072110049) （博导类）
