A Low-Cost GPS Satellite Signal Baseband System Using FPGA Prototyping

Abstract

The Global Positioning System (GPS) has been widely used in life, such as automobile, airplane and mobile phone. To verify the received function of GPS receiver, we design a simplified four-channel GPS Digital Satellite Signal (GPS-DSS) baseband system using a low-cost FPGA prototyping which includes design of C/A code generator, navigation messages processing and Bipolar-Phase Shift Keying (BPSK) baseband modulation. Experimental results shown that our proposed baseband system only used 10 percent of slices in Xilinx Xc2s50e FPGA resource.