基于扩展OTSM图的滑动型散射中心建模方法  

Modeling Method of Sliding Scattering Center Based onExtended OTSM Graph

作　　者：胡杰民 陈锡清 邹博 蔡伟柯[3] HU Jiemin;CHEN Xiqing;ZOU Bo;CAI Weike(Zhejiang Sci-Tech University,Hangzhou 30016,China;Institute of land aviation,Beijing 101121,China;National University of Defense Technology,Changsha 410073,China)

机构地区：[1]浙江理工大学,杭州300162 [2]陆航学院,北京101121 [3]国防科学技术大学陆军航空兵研究所,长沙410073

出　　处：《电子与信息学报》2023年第8期2927-2935,共9页Journal of Electronics & Information Technology

基　　金：国防科技重点实验室基金(WDZC20205500208)。

摘　　要：雷达目标散射中心建模是雷达目标特性分析与雷达目标识别中的关键步骤,光滑流线型结构在雷达目标上的广泛应用,给传统散射中心建模带来了巨大挑战。该文针对滑动散射中心建模开展研究,首先分别基于曲面边缘散射和曲面散射两种情况,推导了滑动散射中心的位置表达式;其次,提出一种基于扩展1维-高维(2维/3维)散射映射图(One–Two/Three Dimensional Scattering Mapping,OTSM)的滑动散射中心估计方法,通过相邻视角的投影几何关系推导滑动散射中心的位置;然后,综合RANSAC算法获取的固定散射中心,获得目标完备的散射中心模型。利用暗室测量数据对算法进行了验证,结果表明了该文算法的有效性。Modeling of radar target scattering center is a key step in radar target characteristic analysis and radar target recognition.The wide application of smooth streamlined structure to radar target brings great challenges to traditional scattering center modeling.This paper focuses on the modeling of the sliding scattering center.Firstly,the position expression of the sliding scattering center is deduced based on the two cases of surface edge scattering and surface scattering respectively.Secondly,a sliding scattering center estimation method based on extended OTSM map is proposed.The location of the sliding scattering center is derived from the projection geometry of adjacent perspectives.Then,combined with the fixed scattering centers obtained by RANSAC algorithm,the complete scattering center model of the target is obtained.The algorithm is verified by the experiment results of the anechoic chamber data,which demonstrate the effectiveness of the proposed method.

关 键 词：滑动散射中心 扩展OTSM图 散射中心建模 特征提取 

分 类 号：TN95[电子电信—信号与信息处理]