激光多普勒测速雷达信号处理的FPGA实现  

Implementation of Laser Doppler Velocity Radar Signal Processing Based on FPGA

作　　者：崔桂华[1] 洪光烈[1] 凌元[1] 

机构地区：[1]中国科学院上海技术物理研究所空间主动光电系统技术实验室,上海200083

出　　处：《红外》2013年第4期18-23,共6页Infrared

基　　金：国家重点基础研究发展计划(973计划)项目(2009CB724004)

摘　　要：激光多普勒测速雷达信号处理由于数据量大、实时性强等特点,对信号处理单元的要求较高。现场可编程门阵列(FPGA)具有高速、并行性等优点,可以满足测速雷达的需求。介绍了利用单片FPGA实现激光多普勒测速雷达信号处理的过程,详细说明了数据的缓存、干扰频率的滤波、2倍降采样、快速傅里叶变换(Fast Fourier Transform,FFT)和脉冲累积等步骤的FPGA实现,最后分析了模块的性能并给出了测试结果。Because of large amount of data and real-time characteristics, the processing of the signal of a laser Doppler velocity radar needs a high performance processing module. The Field Programmable Gate Array （FPGA） with advantages of high speed and parallelism can meet this demand. The imple-mentation of signal processing for a laser Doppler velocity radar with a FPGA chip is presented. The data buffer, interference frequency filtering, 2-fold down-sampling, Fast Fourier Transform （FFT） and pulse accumulating etc of the FPGA are described. Finally, the performance of the module is analyzed and its test result is given.

关 键 词：现场可编程门阵列 激光多普勒测速雷达 信号处理 

分 类 号：TN957.51[电子电信—信号与信息处理]