关键词: 扩频通信, FPGA, 非相干捕获, BPSK调制

Abstract:

Spread spectrum signal acquisition and tracking is the basis of dispreading positioning spread spectrum receiver.This paper presents an implementation of spread spectrum signal capture and tracking based on FPGA.The design and implementation of the matched filter,carrier tracking loop,and the code tracking loop are given.The parallel capture PN code not coherent spread spectrum communication algorithm is adopted to realize the signal capture by BPSK modulation.

Key words: spread spectrum communication;FPGA;incoherent capture;BPSK modulation