基于散射中心模型的舰船LFM雷达回波仿真  

Echo Simulation of LFM Radar for Ship Target Based on Scattering Center Model

作　　者：张安[1] 卢再奇[1] 范红旗[1] 王青[1] 

机构地区：[1]国防科技大学ATR国家重点实验室,湖南长沙410073

出　　处：《雷达科学与技术》2011年第4期316-320,共5页Radar Science and Technology

基　　金：国防科技重点实验室基金资助项目(No.9140C08005011009)

摘　　要：关于雷达回波的模拟,目前研究最多的是简单场景下点目标模型的回波仿真。针对复杂的海情背景,提出用散射中心模型仿真舰船目标LFM雷达回波的方法。首先模拟了弹道轨迹及舰船摆动,然后利用2D-ESPRIT算法提取出舰船的二维散射中心位置分布及其类型参数,并推导出舰船的散射中心回波模型。该回波模拟方法不仅流程清晰、完整,而且仿真场景复杂、回波结果逼真度好。最后用MATLAB仿真分析了舰船的LFM雷达回波及其一维距离像,验证了模型的正确性和实用性。The existing radar echo simulation is mostly upon point target model in simple scenario.According to complex sea background,an echo simulation method of LFM radar for ship target based on scattering center model is proposed in this paper.Firstly,the ballistic trajectory and swing of ship are simulated,and then the 2D-ESPRIT algorithm is used to extract the two-dimension distribution and typical parameters of scattering centers.Furthermore,the echo simulation model of ship based on scattering centers is derived.The proposed approach can clearly,completely and realistically denote the echo in complex sea background.Finally,the MATLAB simulation on echo of LFM and range profile of ship target indicates the validity and practicability of the model.

关 键 词：散射中心 舰船摆动 线性调频 回波仿真 

分 类 号：TN958.3[电子电信—信号与信息处理] TN957[电子电信—信息与通信工程]