GPS/BDⅡ双模导航接收机设计与实现

Design and implementation of GPS/BDⅡ dual mode navigation receiver

随着全球卫星导航系统的日益发展,以软件无线电为主体的多模导航接收机设计已成为整个导航系统中的研究热点。介绍了一种基于MAX2769B的GPS/BDⅡ双模导航接收机的设计,对GPS/BDⅡ双系统软件接收机进行了基带信号处理的研究,给出了系统实现的具体方案,对各部分的硬件电路模块做了详细介绍。对FPGA内部的主要功能模块设计做了相应的阐述,各主要功能模块的仿真结果和系统测试结果验证了该设计的正确性。该系统可以在硬件平台不做改动的情况下,通过修改软件程序实现导航接收机相关性能和技术指标的提高。该GPS/BDⅡ双模导航接收机对卫星导航信号接收用户具有较高的实用性。

With the development of global satellite navigation systems, the design of multiple mode navigation re?ceivers based on software radio has become a hot spot of research in the navigation systems. The GPS/BDII dual mode navigation receiver was designed based on MAX2769B, and base-band signal processing was researched. In addition, the system implementation of specific programs was given, and each part of the hardware circuit modules introduced. The main modules inside the FPGA were described. The simulation of the main modules and the result of system test verify the correctness of the design. Under the condition of keeping the same hardware platform un?changed , the navigation receiver can improve the performance and technical specifications by modifying the software program. Practical applications indicate the GPS/BDII dual mode navigation receiver has nice interaction and prac?ticability.