多路径效应影响下GPS-RTK测量精度的分析

The Analysis of GPS-RTK Surveying Accuracy under the Influence of Multi-Path Effect

GPS-RTK测量具有实时、快速、灵活便捷等优点,广泛应用于各个测绘领域。但是,GPS-RTK测量缺少必要的检核条件,无法直接衡量其观测精度。理论研究及实践证明,影响GPS-RTK作业的主要误差源实际上是多路径误差。笔者对几种多路径条件下进行测量观测分析,得出了一些常见多路径效应条件下影响GPS-RTK测量精度的结论。

GPS-RTK,which is featured with real-time,fast speed and flexibility and convenience,is widely applied in every area of surveying and mapping.But,GPS-RTK surveying also lacks the means of testing its accuracy which is cannot be measured directly.Theoretical study and practice prove that multi-path error is the main source of influence to the accuracy of GPS-RTK surveying.Based on the observation of some surveying under multi-path condition,this paper draws conclusion on the common factors that influence the surveying accuracy of GPS-RTK under multi-path condition.