Analysis for Transformation Parameter of Real-time Kinematic GPS
Hongfei Wang · Surveying and mapping · 2009
Along with the GPS surveying technique's unceasing progress,the dynamic GPS technology,specially the technology of real-time dynamic carrier phase difference(RTK),has become a new breakthrough in the GPS surveying technique.But because the GPS survey uses the WGS-84 coordinates system,but the coordinate system using in our country is 1954 Beijing coordinate systems(or 1980 national earth coordinate system,local coordinates system etc),the elevation datum is Qingdao Yellow Sea elevation of 1956(or national elevation datum of 1985),therefore GPS-RTK survey must solve the transformation parameter firstly,so that we can use the surveying achievement.The transformation parameter's solution is the foundation of RTK survey,the transformation parameter’s precise degree is the key aspect affecting the RTK surveying accuracy.