GNSS接收机观测数据多径效应分析方法研究

The Study of Analysis Methods for Multipath Effect of GNSS Receiver’s Measurement Data

多径效应是影响GNSS接收机观测数据质量的主要误差因素之一。首先,介绍了多径效应及其信号特性,分析了多径效应对GNSS接收机伪距测量和载波相位测量的影响,阐述了三种GNSS接收机观测数据多径效应分析方法,并结合实际观测数据给出了多径效应分析结果,最后介绍了几种常用的多径效应抑制方法。

Multipath effect is one of mostly error factors, which infects the quality of GNSS receiver＇ s measurement data. The paper analyses the characteristics of multipath effect and influences to pseudorange and carrier phase of GNSS receiver, and then gives three ways to the analysis of multipath effect and the analysis results of the measurements data to the navigation satellite. Finally, several methods to multipath mitigation are showed.