一种新的弹道目标成像匹配识别算法  

A New Recognition Algorithm for Ballistic Targets in Imaging Matching

作　　者：何兴宇 童宁宁[1] 胡晓伟[1] 

机构地区：[1]空军工程大学防空反导学院,陕西西安710051

出　　处：《空军工程大学学报（自然科学版）》2014年第4期38-41,共4页Journal of Air Force Engineering University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61372166);陕西省自然科学基础研究计划资助项目(2014JM8308)

摘　　要：为了能充分利用目标的散射中心对弹道目标进行识别,提出利用解线频调的方法,通过对距离向和方位向进行快速傅里叶变换,实现对目标散射中心成像,然后从目标ISAR像中提取目标特征信息,提出了一种新的匹配识别的方法实现对目标的分类识别。该方法利用提取的散射中心的位置和幅度信息,通过构造匹配度矩阵,进而与预设门限比较,判定目标类别。仿真实验及识别性能评估表明,该方法在设定情况下具有良好的目标识别能力。In order to recognise the ballistic target by effectively utilizing the scattering centers of the target,a dechirping method is proposed.First,by proceeding planar FFT,the imaging for target＆#39;s scattering center is achieved,and then target＆#39;s feature information is extracted from its ISAR imaging.Finally,a new matching recognition method is proposed to realize target＆#39;s classification.The method is used for j udging target＆#39;s classification by extracting the information from the scattering centers＆#39;position and amplitude through constructing matching matrixs and again comparing with the preinstall threshold.The simulations and the assessments of classified performance show that the method is efficient in target＆#39;s recognition under the set conditions.

关 键 词：ISAR 解线频调 散射中心 匹配矩阵 评估 

分 类 号：TN957.52[电子电信—信号与信息处理]