中文摘要：

为了提高多径环境下的GNSS接收机性能,在GNSS接收机设计中引入Rake结构,提出一种基于Rake结构的多径信号捕获方法。首先对GNSS系统中的多径信号特性及其对接收机性能的影响进行了分析。然后,在此基础上阐述基于Rake结构的GNSS多径信号捕获方法原理,并给出该方法的具体实现过程。最后,通过仿真实验证明了该方法对GNSS信号中的多径成分具有有效的捕获能力,将该方法用于GNSS接收机后可以显著提高接收机的定位精度。

英文摘要：

A GNSS multipath signal acquisition method based on Rake architecture is proposed,Rake architecture is introduced into GNSS receiver to improve its performance in multipath environment.Based on the analysis of GNSS multipath characteristics and their impact on receiver performance,the acquisition principle of GNSS multipath signals based on Rake architecture is described,and then its detail realization process is given.Simulation results show that GNSS multipath signals can be acquired effectively with this method and the positioning accuracy can be greatly improved when the method is used in GNSS receiver.