Design and Analysis of Target Echo Signal Generation System for Frequency-Agile Radar Based on FPGA
In order to improve the verification efficiency of signal processing algorithms for frequency-agile radar,a design method of target echo signal generation for frequency-agile radar based on FPGA is proposed.This method a-dopts the idea of item-by-item restoration of the echo signal phase,by establishing a mathematical model of the stepped frequency waveform echo signal,it solves the real-time phase of target echo for the target relative uniform radial motion based on FPGA,and the problem of real-time generation of target echo for frequency-agile signals.Simulation results show that in both uniform and non-uniform motion states of the target,the effectiveness and accuracy of the echo genera-tion system is verified.By comparing the target echo phase change curves with and without velocity compensation,the target high-resolution one-dimensional distance image,and the fine-resolution distance cell numbers of the neighboring three frames echo signals,the echo phase with velocity-compensation for uniform velocity motion target is varies linearly be-tween-π and π,and the difference of fine-resolution distance cell numbers is 10 and 10,9 in turn at uniform and non-uni-form motion states of the target.
target echofrequency-agile signalFPGAhigh-resolution one-dimensional range imagetarget rela-tive uniform motion
万方数据
维普
