基于窄相关技术的GPS接收机多径误差分析

GPS接收机的误差受多种因素影响,多径干扰便是其中一项。特别在差分GPS地面站接收机中,更有必要研究多径误差对测量的影响。减少多径干扰的办法有两大类:一类是采用特殊天线;另一类是在接收机中采取一定的措施。文中针对第二种方法中的利用窄相关技术的GPS接收机展开分析。分析影响接收机多径误差的因素及利用窄相关技术的接收机对多径误差消除的效果,并给出仿真及分析结果。

Multipath Error of GPS Receiver and the Analysis of Performance of Narrow-correlation

The GPS error is influenced by a lot of factors,one of them is multipath effect. There are two methods to mitigate the multipath error,one is to use special antennas and the other is by operating on the multipath corrupted signal within the receiver. The narrow correlation of the second method is analyzed in this paper. The analysis is fooused on the relationship between the multipathed signals and the caused error,the narrow correlation method also has been analyzed. Simulation results have been given out.