WHCORS边缘区域的转换参数处理与精度验证

Processing and Precision Validation of Transformation Parameter for Marginal Areas of GPS Virtual Reference Station

以新洲区土地利用现状调查生产实例,采用重新确定WHCORS系统虚拟参考站坐标转换参数的方法,提高WHCORS边缘区域定位精度,扩展WHCORS系统cm级覆盖范围,采用拟合高程与水准高程差值分布图改正测点高程的方法,提高未完成大地水准面精化工作地区的GPS高程测量精度,并通过实测结果的精度分析,验证了方法的可行性。

Taking land-use investigation in Xinzhou for example, the system improved positioning accuracy of WHCORS region, expanded WHCORS system era-level coverage, by using the method for determining WHCORS virtual reference station coordinate trandformation parameters, and enhanced GPS height measurement accuracy in non-finished region of geoid refinement by using margin distribution of fitting height and leveling elevation to correct the measuring point elevation and verified the feasibility of the method threough analysis of the test results accuracy.