调频间断连续波雷达信号处理分析与仿真  

Analysis and Simulation of FM Interrupted CW Radar Signal Processing

作　　者：万红进[1] 刘辉[1] 杨石玲[1] 

机构地区：[1]西安电子工程研究所,西安710100

出　　处：《火控雷达技术》2011年第2期30-34,共5页Fire Control Radar Technology

摘　　要：调频连续波雷达具有诸如低峰值功率,低截获概率以及高距离分辨率等优势。然而,其主要缺点是对收发天线较高的隔离度要求。这通常导致采用两个独立天线用于发射和接收。一些方案采用调频间断连续波技术使得调频连续波雷达可以用一个天线工作提高收发隔离度。本文对调频间断连续波体制雷达信号进行分析,利用二次FFT处理算法解决频谱延展造成虚假目标的问题,同时给出了调频间断连续波重复频率选择的约束条件,最后在MATLAB中进行了仿真验证。The FMCW radars offer many advantages such as low peak power, low probability of interception, high range resolution, etc. However, its major disadvantage is the high requirements for isolation between the transmitter and receiver antennas. This usually leads to using two separate antennas for transmission and reception. Some schemes, for example FM interrupted CW technology have been proposed to enable FMCW radars to operate with a single antenna to improve transceiving isolation. This paper analyzes the signal processing of FM interrupted CW system radar signal, uses a twice FFT processing algorithm to solve problems of spurious targets caused by the spread spectrum, meanwhile it gives the constraints for selection of the FM interrupted CW repetition frequency, and finally the simulation verification is performed with MATLAB.

关 键 词：调频间断连续波 调频连续波 线性调频连续波 毫米波雷达 信号处理 

分 类 号：TN911.7[电子电信—通信与信息系统] TP15[电子电信—信息与通信工程]