基于时域弹跳射线法的海面复合目标近场回波仿真  

Near Field Echo Simulation of Sea Surface Composite Target Based on Time Domain Shooting and Bouncing Ray Method

作　　者：吕德程 余洪鑫 冯菊[1] 钟选明[1] LYU De-cheng;YU Hong-xin;FENG Ju;ZHONG Xuan-ming(Institute of Electromagnetics,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学电磁所,成都610031

出　　处：《微波学报》2023年第1期13-18,共6页Journal of Microwaves

基　　金：国家自然科学基金(61801405,61771407)。

摘　　要：雷达回波信号的获取对研究动态目标识别和雷达成像具有十分重要的意义。提出了一种基于时域弹跳射线法(Time Domain Shooting and Bouncing Ray, TDSBR)的动态目标回波仿真模型,用于模拟海上电大目标的近场雷达回波。该模型采用TDSBR方法直接在时域计算弹载雷达照射下的目标与海面近场复合散射特性,并结合“stop-go”方法模拟雷达与目标之间的相对运动,实现了弹载雷达照射下海上运动舰船目标的回波信号仿真。仿真结果表明,该模型可以有效呈现海面与海上目标的耦合效应,实现对目标速度和距离的预测,具有良好的精度和较高的效率,在海洋环境中弹载雷达的回波预测和目标检测中具有广阔的应用前景。The acquisition of radar echo signal is of great significance to the study of dynamic target recognition and radar imaging. In this paper, an echo simulation model based on time domain shooting and bouncing ray method(TDSBR) is proposed to simulate the radar echo of marine electrically large targets. The model uses TDSBR method to directly calculate the near-field composite scattering characteristics of target and sea surface under the irradiation of missile borne radar in time domain, and combined with the “stop-go” method to simulate the relative motion between radar and target, so as to realize the echo signal simulation of sea moving ship target under the irradiation of missile borne radar. The simulation results show that the model can effectively present the coupling effect between sea surface and sea target, and realize the prediction of target speed and distance with good accuracy and high efficiency. It has a good application prospect in echo prediction and target detection of missile borne radar in marine environment.

关 键 词：雷达回波 时域弹跳射线法 复合目标 近场散射 动目标检测 

分 类 号：TN957.51[电子电信—信号与信息处理]