动态目标宽带雷达回波频域模拟及成像仿真  

Wideband Radar Echo Frequency-Domain Simulation and Imaging Simulation for Moving Target

作　　者：黄琳琳[1] 夏伟杰[1] 周莹[1] 齐媛媛[1] 

机构地区：[1]南京航空航天大学雷达成像与微波光子技术教育部重点实验室,南京210016

出　　处：《航空兵器》2015年第6期58-62,共5页Aero Weaponry

基　　金：航空科学基金项目(20130152001)

摘　　要：采用理论建模仿真的方法模拟雷达回波对研究雷达成像和目标检测识别具有重要意义。在完成空中目标几何建模的基础上,采用"走-停-走"模型,发射一组X波段的步进频率信号。根据每个雷达脉冲发射时刻目标与雷达的角度关系,用课题组自研的基于SBR的高频电磁散射计算软件计算得到目标的频域RCS。结合目标的飞行轨迹,可以模拟出频域的目标回波信号,并在此基础上对点目标和F-22模型的回波信号进行逆合成孔径雷达(ISAR)成像处理,成像结果验证了该方法的有效性。Radar echo simulation by using the method of theoretical modeling is significant to the study of radar imaging and target detection and recognition. Based on the geometric modeling for the target,‘go-stop-go＇model is taken and a group of X-band stepped-frequency signals are chosen as the transmitted waveform. According to the angular relations between the target and radar at each transmission time,the RCS of target in frequency-domain is figured out by the SBR-based high frequency electromagnetic scattering calculation software which is developed by seminar. Then,according to the trajectory of target,the echo signal in frequency-domain is simulated. In addition,the echo signals of point target and F-22 model are processed by inverse synthetic aperture radar（ ISAR） imaging,and the simulation results illustrate the efficiency of the proposed method.

关 键 词：动态目标 宽带雷达 回波仿真 ISAR成像 步进频率信号 

分 类 号：TN957[电子电信—信号与信息处理]