Research and Design of GPS\BD Dual Mode Single-Channel IF Signal Acquisition System

The classical high speed data acquisition platform based on FPGA and USB3.0 technology as the core, the IF signals of GPS L1 and BD B1 of the acquisition system can be received and converted into digital IF data. Designed the USB device of firmware program and host computer storage program, the High Speed acquisition, transmission and storage of IF data are achieved. The experimental results show that IF signal acquisition system of GPS\BD can be used in all location-based service(LBS) applications, IF data can be saved correctly and completely, and meet the requirements of data location.