摘要
介绍了快速傅里叶变换捕获技术的算法及原理,设计了一种FFT伪码快速捕获的硬件实现方案和测试方案,并详细分析了整个系统的结构。借助FPGA平台进行开发验证,利用MATLAB仿真软件和QuartusII内嵌的逻辑分析仪SignalTapⅡ进行仿真测试,系统仿真和实际测试结果表明该捕获电路能够正常工作,并已经应用于GNSS接收机的开发。
Introduced the principle of fast Fourier transform（FFT） acquisition,designed a hardware prototype and a method of test,and given the structure of acquisition system in detail.then the system was implemented based on FPGA.Finally the acquisition circuit was simulated and test with matlab software and QuartusⅡ SignalTap Ⅱ embedded logic analyzers.the simulation results and test results proved the design is correct.It has used for GNSS receiver.
出处
《电子测量技术》
2014年第2期1-4,共4页
Electronic Measurement Technology
关键词
快速傅里叶变换
伪码捕获
扩频
FPGA
fast Fourier transform
PN code acquisition
spread spectrum
FPGA
