复杂微动目标SAR仿真技术  

SAR Simulation Technology of Complex Micro-Motion Target

作　　者：齐媛媛 夏伟杰 Qi Yuanyuan;Xia Weijie(National Key Laboratory of Science and Technology on Avionics System Integration, Shanghai 200233, Chin)

机构地区：[1]航空电子系统综合技术重点实验室,上海200233

出　　处：《航空兵器》2018年第2期65-68,共4页Aero Weaponry

摘　　要：针对基于微动特征提取的目标识别技术研究,提出了一种基于电磁散射计算的微动目标SAR回波仿真方法。该方法在完成雷达目标动态几何建模的基础上,结合目标高频电磁散射计算与距离频域回波模型,能够实现指定雷达视角和电磁参数条件下的微动复杂目标SAR回波仿真与图像模拟。结合实际情况,以螺旋桨飞机为例,研究了其SAR回波特性和成像特性,仿真结果表明该方法能够有效解决微动仿真问题。Aiming at the research of target recognition technology based on micro-motion feature ex- traction, a new method based on electromagnetic scattering calculation is presented for SAR simulation of complex micro-motion target. On the basis of the complete dynamic geometric modeling of radar target, combined with high frequency electromagnetic scattering calculation and the echo model in the range-fre- quency domain, this method can achieve the SAR echo and image data in the case of specified radar view and electromagnetic parameters. The SAR echo and ied as a simulation example. The simulation resuhs of micro-motion simulation. image characteristics for the propeller aircraft are stud- show that this method can effectively solve the problem

关 键 词：微动目标 目标识别 特征提取 动态回波 距离频域 JEM效应 

分 类 号：TJ765.4[兵器科学与技术—武器系统与运用工程] TN959.17[电子电信—信号与信息处理]