摘要
GPS和GLONASS卫星定位系统分别采用WGS-84和PZ-90坐标系。为统一两种卫星定位成果,欧、美、俄于20世纪90年代各自求出两坐标系之间的转换参数。目前三种参数尚未统一,对GPS/GLONASS联合定位造成较大影响。本文针对国外介绍PZ-90和WGS-84坐标系相互转换时常用的转换模型及三种不同转换参数进行比较分析。分别选用地面GPS参考站坐标和GLONASS卫星轨道坐标,用三种坐标转换参数进行转换,对转换结果差异及其对单点定位和相对定位精度造成的影响进行全面分析比较,得出一些有益结论。
The WGS-84 and PZ-90 coordinates systems are separately used by GPS and GLONASS. In order to combine the different positioning results, three types of transformation parameters were respectively computed by Europe, America and Russia. The parameters are still not unified. It has a seriously impact on the combined positioning using GPS and GLONASS together. The models and three kinds of transformation parameters are compared and analyzed in this paper. The coordinates of GPS reference stations and GLONASS orbit are used to compare the accuracy and difference among these three types of parameters. The different results and influence on single point and relative positioning are compared and analyzed. Finally, some useful conclusions have obtained by the author.
出处
《测绘科学》
CSCD
北大核心
2008年第2期45-47,共3页
Science of Surveying and Mapping
