200MSPS数字脉冲压缩模块设计与实现

Design and Realization of 200MSPS Digital Pulse Compression Module

介绍了基于Xilinx公司FPGA(现场可编程门阵列)实现高速实时数字脉冲压缩处理的设计方法。本数字脉冲压缩模块由3片FPGA级联,分别完成脉冲压缩运算中的FFT(快速傅里叶变换)、复数乘窗和IFFT(快速傅里叶反变换)功能。在Xilinx器件上实现了数字脉冲压缩算法。通过与MATLAB仿真结果比较,该数字脉冲压缩模块很好地实现了32k点的块浮点数字脉冲压缩功能,吞吐率达到200 MSPS(百万次采样每秒)。

In this paper, a design method of high-speed, real-time digital pulse compression module based on Xilinx FPGA devices is introduced. This digital pulse compression module consists of three FPGA devices, separately realizing FFT, complex-multiplication and IFFT function. On the basis of analysing and designing each function sub-module, a digital pulse compression algorithm is realized on Xilinx FPGAs. Compared with the MATLAB simulation results, our module can accomplish function of 32k points digital pulse compression of 200MSPS throughput very well