非线性调频中频回波预处理的实现方法  

Implementation of Non-linear FM IF Echo Preprocessing

作　　者：叶兵[1] 丁建江[2] 

机构地区：[1]空军雷达学院研究生管理大队,湖北武汉430019 [2]空军雷达学院科研部,湖北武汉430019

出　　处：《空军雷达学院学报》2005年第1期40-41,44,共3页Journal of Air Force Radar Academy

基　　金：军队重点资助项目(KJ04101)

摘　　要：基于常规雷达回波特征识别对回波信号质量有较高的要求,针对非线性调频脉冲压缩体制雷达,提出了一种非线性调频中频回波预处理的方法,离线实现了单通道中频正交采样、非线性调频脉冲压缩和Hilbert 滤波处理.仿真结果表明,通过此方法获得的I、 Q相参视频为提取识别特征奠定了较好的基础.Considering that the high quality of echo signals is required for the conventional radar echo feature identification, this paper presents a method of non-linear FM IF echo preprocessing, which accomplishes off line the single channel quadrature sampling, non-linear FM pulse compression and Hilbert filtering. By simulation it shows that the obtained I and Q phase reference video signals, by means of the preprocessing, lay a solid foundation of feature extraction.

关 键 词：回波预处理 非线性调频脉冲压缩 中频正交采样 Hilbert滤波 

分 类 号：TN957.51[电子电信—信号与信息处理]