影响GPS水准高程的因素及高程拟合方法的探讨

Discussion on factors of influence on GPS level elevation and on elevation-fitting method.

在简单介绍高程系统的基础上,对影响GPS高程精度的几何水准联测误差、卫星分布不对称、星历误差、多路径误差等因素逐一进行了分析,并提出了相应的改进措施。同时,还对高程拟合使用的稳健估计方法进行了探讨。

The paper analyzed the major error causes that affect the quality of GPS level measurement and proposed a elevation fitting method based on robust estimation.