基于SoC的GNSS接收机多系统兼容技术研究

分析了GPS,GLONASS,BD,Galileo多系统兼容的意义、可行性和关键问题,提出了基于SoC的GNSS接收机多系统兼容方法,通过中频采样技术、扩展时频二维展开的微弱信号快速捕获技术及基于存储码技术的相关通道、基于SoC的信号处理等方法,解决多系统在采样、捕获、跟踪、处理等方面的兼容问题;前端配备兼容型天线和射频,实现了多卫星导航系统兼容;并给出了基于SoC的GNSS接收机多系统兼容的实现结构及处理流程,搭建验证系统,实现了对各导航信号的兼容跟踪.

Study of Multi-System Compatibility in GNSS Receiver Based on SoC

This paper analyzes the significance,feasibility and key issues of the GPS,GLONASS,BD,Galileo multi-system compatibility and proposes a multi-system compatible method in GNSS receiver based on SoC.A number of measures,such as IF sampling technique,time-frequency two-dimensional weak-signal fast acquisition technology,memory-code based correlation channel and SoC based signal processing method,were adopted to deal with the compatibility issues.With the compatible antenna and RF module,the GNSS receiver could...