现代电子技术
現代電子技術
현대전자기술
Modern Electronics Technique
2015年
17期
13-16
,共4页
贾颖焘%顾赵宇%傅其详%王伟
賈穎燾%顧趙宇%傅其詳%王偉
가영도%고조우%부기상%왕위
脉冲压缩%线性调频信号%匹配滤波%FIR滤波%正交解调
脈遲壓縮%線性調頻信號%匹配濾波%FIR濾波%正交解調
맥충압축%선성조빈신호%필배려파%FIR려파%정교해조
pulse compression%LFM signal%matched filtering%FIR filtering%quadrature demodulation
研究基于FPGA和DSP的线性调频信号脉冲压缩的一种实现方法,FPGA负责信号的预处理,主要包括FIR滤波和正交解调,DSP负责脉冲压缩的实现,给出了FPGA各部分的功能框图和DSP的算法流程图,对比了匹配滤波器加窗前后脉冲压缩结果的第一距离旁瓣的变化.结果表明,加窗后匹配滤波器输出的旁瓣距峰值衰减由13 dB增加至32 dB.
研究基于FPGA和DSP的線性調頻信號脈遲壓縮的一種實現方法,FPGA負責信號的預處理,主要包括FIR濾波和正交解調,DSP負責脈遲壓縮的實現,給齣瞭FPGA各部分的功能框圖和DSP的算法流程圖,對比瞭匹配濾波器加窗前後脈遲壓縮結果的第一距離徬瓣的變化.結果錶明,加窗後匹配濾波器輸齣的徬瓣距峰值衰減由13 dB增加至32 dB.
연구기우FPGA화DSP적선성조빈신호맥충압축적일충실현방법,FPGA부책신호적예처리,주요포괄FIR려파화정교해조,DSP부책맥충압축적실현,급출료FPGA각부분적공능광도화DSP적산법류정도,대비료필배려파기가창전후맥충압축결과적제일거리방판적변화.결과표명,가창후필배려파기수출적방판거봉치쇠감유13 dB증가지32 dB.
The implementation method for pulse compression of linear frequency modulation (LFM) signal based on FPGA and DSP is researched,in which FPGA is responsible for signal preprocessing,and DSP is responsible for the implementation of pulse compression. Function block diagrams of each FPGA module and the algorithm flow chart of DSP are given. The change of the first distance side-lobe of pulse compression results before and after adding the window of the matched filter is compared. The result shows that after adding the window,the side-lobe peak attenuation output by the matched filter is increased from 13 dB to 32 dB.
