空间技术实现地心坐标的精度检测与分析  

Accuracy Determination and Analysis of Geocentric Coordinates Determined by Space Geodetic Technologies

作　　者：陈坡[1] 孙付平[1] 陈雷[1] 刘雪瑞 

机构地区：[1]解放军信息工程大学测绘学院 [2]61365部队

出　　处：《海洋测绘》2009年第2期31-34,共4页Hydrographic Surveying and Charting

摘　　要：为评价GPS、VLBI、SLR三种空间技术确定地心坐标的实现精度,选择使用三种技术并置站上的坐标数据,在经历元统一、偏心改正和七参数转换之后,计算了这三种技术实现的参考架的转换参数,得到了任意两种技术地心坐标不符值的加权中误差,以此作为外符精度。经分析可知VLBI与GPS实现的地心坐标比SLR高一些,可达到毫米级。In order to evaluate the real accuracy of the geocentric coordinates determined by GPS, VLBI and SLR , we used their located on the same site. After calendar correction and eccentricity correction , we get the transformation parameters . The mean square error of difference between any two kinds of geocentric coordinates is analyzed, which can reflect the real accuracy . The results show that the accuracy of the coordinates determined by GPS and VLBI is higher than SLR , better than 1 mm.

关 键 词：空间技术 地心坐标 标称精度 外符精度 

分 类 号：P228[天文地球—大地测量学与测量工程]