To improve the compatibility of the receiver, reduce design complexity and costs, this study researched the tracking channel design of configurable multi-system receiver based on FPGA and GPS hardware platform. The frame construction and function module of the tracking channel were explained firstly. Then the key technologies to implement the configurable channel, such as configurable carrier NCO(Numerically Controlled Oscillator), code NCO and code generator were analyzed. By simulating under the environment of ModelSim software and measuring with the GPS/COMPASS signals, it was verified that the channel was flexible and configurable. Resource analysis also showed that the logic resource was reduced by about a half compared to the independent system.
俞 磊,常 青.可配置的多系统兼容导航跟踪通道设计[J].太赫兹科学与电子信息学报,2010,8(2):134~138复制