摘要
为研制北斗卫星导航模拟信号源,设计实现了北斗QPSK信号调制器。文中在分析了北斗卫星导航系统B1频段信号的正交相移键控调制信号的基础上,基于软件无线电的思想,在FPGA硬件平台上实现了QPSK信号调制器,通过功率谱测试,QPSK解调和简单串口信息传输,验证了调制解调硬件单元的正确性。
A Beidou QPSK signal modulator is designed and implemented to develop the Beidou satellite navigation analog signal source. This paper analyzes the Beidou satellite navigation system Bl band signal quadrature phase shift keying modulation signal, and implements QPSK signal modulator on FPGA hardware platform based on the idea of software radio. The correctness of modulation and demodulation hardware unit is verified by power spectrum test on QPSK demodulation and simple serial information transmission.
出处
《电子科技》
2014年第3期95-98,共4页
Electronic Science and Technology
基金
中国航天科技集团公司卫星应用研究院创新基金资助项目(20121512)
