LFMCW雷达线性度的检测新方法  

A New Method of Testing Frequency-modulation Linearity of a LFMCW Radar

作　　者：任开春[1] 涂亚庆[1] 

机构地区：[1]后勤工程学院后勤信息工程系,重庆400016

出　　处：《现代雷达》2006年第8期13-17,共5页Modern Radar

基　　金：国家自然科学基金资助项目(60272085)

摘　　要：线性度校正技术是高分辨率LFMCW雷达的关键技术之一。文中首先分析常见的线性度校正方法及相应的检测方法,在此基础之上提出一种新型的线性度检测方法。该方法将短时傅里叶变换和小波变换有机地结合起来,并利用修正算法改善其性能。仿真结果表明,该方法能有效地检测LFMCW雷达的调制线性度。The linearity-correction technique is one of key techniques of a high resolution LFMCW radar. After linearitycorrection techniques and their corresponding linearity-testing methods are introduced, a new method of testing linearity of a LFMCW radar based on short-time Fourier transform and wavelet transform is also proposed. Furthermore, a modified method is presented. Simulation results show that it can efficiently test frequency-modulation linearity.

关 键 词：线性调频连续波雷达 线性度校正 短时傅里叶变换 小波变换 

分 类 号：TN958[电子电信—信号与信息处理]