摘要
本文介绍了为高精度获得地心坐标而建立的ＧＰＳ－ＫＴＩＳ系统的原理、方法和精度。与《ＤＸ－２》不同，ＧＰＳ－ＫＴＩＳ的动态变换特性（即模型的动态性、解算过程的区域性和已知数据的现势性）使转换参数能反映大地网的局部形变并能体现最新空间大地测量成果的影响。试算结果表明，ＧＰＳ－ＫＴＩＳ转换参数的转换精度比我国当前应用的《ＤＸ－２》转换参数提高了７０％，这标志着我国新一代地心坐标转换参数的建立。
This paper introduces the principle. method and accuracy of the GPS-KTIS which is a applied systemand has been established in order to high-accurately obtain the geocentric coordinates. Unlike 《DX-2》which is nowadays used in China. the GPS-KTIS has the kinematic transformation characters, that is. the kinematic function in the model. the regionalism in the solving process and the actuality of the known data. Hence the transformation parameters in the GPS-KTIS can reflect the partial deformation in the network and the effects of the new space geodetic data.The results of the actual calculations express the transformation accuracy of the GPS-KTIS is increased 70% than 《DX- 2》. So the new geocentric coordinate's transformation parameters have been established in pace with the establishment of the GPS- KTIS.
出处
《测绘科学技术学报》
1995年第2期84-88,共5页
Journal of Geomatics Science and Technology
关键词
坐标转换参数
系统误差
大地信息系统
地壳形变
Coordinate's transformation parameter. Systematic error. Geo-information system. Crustal deformation
