舰船目标宽带单脉冲雷达三维成像建模与仿真  

Three-Dimensional Imaging Modeling and Simulation of Ships Based on Wide-Band Monopulse Radar

作　　者：刁桂杰[1] 许小剑[2] 倪虹[1] 路军杰[1] Diao Guijie;Xu Xiaojian;Ni Hong;Lu Junjie(Beijing Electro-mechanical Engineering Institute, Beijing 100074, China;School of Electronics and Information Engineering, Beihang University, Beijing 100191, China)

机构地区：[1]北京机电工程研究所,北京100074 [2]北京航空航天大学电子信息工程学院,北京100191

出　　处：《系统仿真学报》2018年第7期2515-2524,共10页Journal of System Simulation

摘　　要：提出了一种基于目标电磁散射特征的海面目标宽带单脉冲雷达三维成像与仿真方法。基于宽带单脉冲雷达体制,结合SAR(Synthetic Aperture Radar,SAR)成像模型,建立了舰船目标宽带单脉冲雷达三维成像模型。该模型根据SAR几何模型和单脉冲天线模型,计算舰船目标宽带动态电磁散射特性,获得每个单脉冲天线阵元接收到的回波信号,通过和差网络分别计算和通道、俯仰差通道和方位差通道信号。利用单脉冲三维成像算法对目标进行了三维成像仿真,分析了不同擦地角情况下的成像结果,验证了模型和仿真方法的正确性。A three-dimensional imaging model for ship target on sea surface is developed based on wide-band monopulse radar system and synthetic aperture radar（SAR） system. The time-varying electromagnetic（EM） scattering of ships is calculated according to the SAR geometry and the monopulse antenna model. The signal received by every antenna element is obtained, and then, the time-domain signals in the sum, azimuth and elevation difference channels are established. Through analyzing the three-dimensional image results in different grazing angles, the model validity is demonstrated.

关 键 词：宽带单脉冲雷达 舰船目标 SAR成像 三维成像 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]