卫星导航双频兼容互操作接收终端设计

Design of dual frequency compatible and interoperable terminal for GNSS

由于全球卫星导航系统兼容互操作进程不断推进,设计实现具有兼容互操作性能的卫星导航接收终端是接收机领域的又一方向。针对CDMA导航信号设计实现了一种双频兼容互操作接收终端,利用终端控制软件设置终端参数,以通用的数字前端模块、基于时域多通道并行捕获、多相位的相关器实现数字接收处理模块,进一步实现定位解算。该终端具有通用性强、捕获速度快、定位精度高等特点,为提高服务的连续性、完好性和可用性奠定了硬件基础。

With the development of compatibility and interoperability of global navigation satellite system,the implementation of satellite navigation receiving terminal with compatibility and interoperability performance is very important.In this paper,a dual frequency compatible and interoperable terminal is designed and implemented for CDMA navigation signal.The terminal parameters are set by terminal control software.The digital processing module is realized by general digital front-end module,parallel multi-channel acquisition based on time-domain,and multi-phase correlator,and the positioning function is further realized.The terminal has the characteristics of strong universality and fast acquisition speed,which lays a hard ware foundation for improving the continuity,integrity and availability of services.