卫星导航接收机通用射频前端设计及实现

当前多个全球卫星导航系统(GNSS)已投入或即将投入运行,GNSS接收机射频前端性能优劣直接影响接收机性能,而不同系统、不同频点的GNSS信号需要设计不同的射频前端,给射频前端的设计提出了挑战.针对以上问题,以实验室自主研发的通用射频芯片为基础,完成了射频前端的方案设计并进行了硬件实现.结合中频数据采集板及软件接收机平台,实现了多系统多频点的实时卫星接收,验证了该通用射频前端的性能满足接收机的要求.

Design and implementation of general navigation receiver RF front end

Several existing multiple global navigation satellite systems(GNSS) have been put into or will soon put into operation,GNSS receiver RF front-end performance directly affects performance of the receiver,GNSS signals belong to different systems and frequencies need different RF front-end design,posed a challenge to the design of the RF front-end.Thus,the design and implementation of RF front end is accomplished based on the common RF chip developed by CNTLAB.The real-time satellite signals receiving with multiple systems and frequencies is realized by combining the data acquisition board and the software receiver platform.The performance of the RF front-end is verified.