GPS测量中多路径误差分析

GPS Multi-Path Errors in Measurement Research

多路径效应是GPS测量中一种主要的误差源,严重损害了GPS的测量精度。文中就多路径效应对GPS测量误差的影响,分析多路径效应产生的原理和一些特征,介绍消除或减弱多路径误差的方法措施。重点分析利用信噪比削弱多路径误差的方法,该方法从接收机接收的信噪比中分离多路径信号成分和直达信号成分,得到多路径对直达信号的影响量,通过改正相位观测量,从而达到消除或减弱多路径误差的目的。

Multi-path effect is the GPS measurement error in an important source of serious damage to the GPS measurement accuracy. This article on the multi-path effects on the impact of GPS measurement er- ror, analysis of the multi-path effect of the principle and some features, introduce a number of paths to e- liminate or diminish many of the methods of error measures. The analysis focused on the use of multi-path errors weaken the signal to noise ratio of the method to receive the signal from the receiver to isolate multi- path signal components and direct signal component, the multi-path signals to direct traffic through the concept of measuring phase correction to achieve the elimination or weakening of the purpose of multi- path.