对流层投影函数对精密单点定位精度的影响分析

摘要

Tropospheric delay is an important error source for GPS positioning .With the continuous improvement of Precise Point Positioning (PPP ) ,the error affects and restricts the further improvement of PPP accuracy .In this paper ,several tropospheric mapping func-tions are used to compare and analyze their influence on PPP solutions using GPS observa-tions .Some beneficial conclusions are draw n .%对流层延迟误差是GPS定位中的一项重要的误差源，随着精密单点定位（PPP）技术的不断发展，该误差影响并制约着G PS精密单点定位精度的进一步提高。基于G PS观测值，比较分析了各种对流层投影函数模型对G PS精密单点定位精度的影响，得出了有益的结论。