双频GPS在南水北调中线配套工程中的应用

Application of Frequency GPS in Middle Route Conveyance Project of the South to North Water Transfer

随着GPS静态定位技术逐步用于高精度定位中,研究其解算模型显得越来越重要。双频R8 GNSS GPS接收机在南水北调配套工程中的应用表明:在具体应用时除保证有足够的、高精度的已知点外,还要考虑已知控制点所构成的几何图形,同时还应注意起算点的匹配问题;采用七参数转换方法可以很好地完成不同坐标系之间的转换,随着双频逐步取代单频,接收机接收数据的稳定性、可靠性越来越好,二者的有机结合,使静态定位的精度越来越高。

Along with the GPS static positioning technology used for the high precision positioning gradually,study on the computation model has become more and more important.The application of frequency R8 GNSS GPS receivers in Middle Route conveyance project of the South to North Water Transfer shows that we should consider the geometric figure consisted by the known control points and pay attention to the matching problem of the point to count except the high precision known points in the specific application.Using the seven parameters transition method can perform well in different coordinate conversion.Along with the frequency GPS receiver gradually replacing the single receiver,the stability and reliability of receiving data is better and better,which makes the precision of the static positioning higher and higher.