提高LFMCW雷达近程探测测距精确度的算法研究  

Research on Algorithm to Improve the Accuracy of LFMCW Radar Short-Range Detection

作　　者：肖怀玉 王洪源[1] XIAO Huaiyu;WANG Hongyuan(School of Information Science and Engineering,Shenyang Ligong University,Shenyang,Liaoning Province,110159 China)

机构地区：[1]沈阳理工大学信息科学与工程学院,辽宁沈阳110159

出　　处：《科技创新导报》2022年第29期128-131,共4页Science and Technology Innovation Herald

摘　　要：为减弱FFT的“栅栏效应”对LFMCW雷达差频信号频率估计精确度的影响,提高LFMCW雷达近程探测测距精度,首先建立差频信号模型,并选择4种常用的提高LFMCW雷达测距精度的算法进行理论分析,其次分别进行处理差频信号的仿真实验。仿真实验表明:在设定的信噪比的噪声干扰下,本文选择的4种算法都可以提高LFMCW雷达的测距精度。In this paper,the objective is to reduce the"fence effect"of FFT on the frequency estimation accuracy of LFMCW radar differential signal,and improve the ranging accuracy of LFMCW radar in short range detection.First,the differential frequency signal model is established,and four commonly used algorithms to improve the ranging accuracy of LFMCW radar are selected for theoretical analysis,and then the simulation experiments of dif‐ferential frequency signal processing are carried out respectively.The simulation results show that the four algorithms selected in this paper can improve the ranging accuracy of LFMCW radar under the noise interference of the set SNR.

关 键 词：FFT LFMCW雷达 差频信号 频率估计 提高测距精度 

分 类 号：TN953[电子电信—信号与信息处理]