一种FMCW雷达线性度校正方法  

Research on a Method for Linearity Correction of the FMCW Radar

作　　者：曲长文[1] 王颖[1,2] 周强[1] 陈波涛 

机构地区：[1]海军航空工程学院 [2]解放军63891部队

出　　处：《火力与指挥控制》2010年第8期55-57,共3页Fire Control & Command Control

基　　金：中国博士后科学基金资助项目(2005037772)

摘　　要：线性调频连续波(LFMCW)是雷达系统中常用的一种信号形式,调频信号调频线性度是衡量信号质量的一项重要指标。分析了线性调频连续波雷达的调频非线性对距离分辨率的影响,提出使用分段线性拟合的方法估计调频信号的线性度,并对非线性进行校正。仿真结果表明校正后距离分辨率及测距精度都极大的提高。The linear frequency modulated continuous wave is commonly adopted in radar system.The linearity of the frequency modulated signal is an important specification to appraise the quality of the signal.The effect of nonlinear frequency modulation to high range resolution on LFMCW radar is analyzed.A method of subsection fitting a straight line is proposed in order to estimate and correct the linearity of the frequency modulated signal.The simulation results show that the range resolution and the measurement precision are improved obviously.

关 键 词：线性调频连续波雷达 非线性 线性度 距离分辨率 

分 类 号：TN958[电子电信—信号与信息处理]