基于虚拟透镜成像技术的转台ISAR成像方法  

A Novel Method of ISAR Turntable Imaging Based on Virtual Lens Imaging Technology

作　　者：张继龙 王栋 张继康 ZHANG Jilong;WANG Dong;ZHANG Jikang(Suzhou Weimo Electronic Information Technology Co.,Ltd,Suzhou 215312,China;Zhongqi Ji Ye(Beijing)Management Consulting Co.,Ltd,Beijing 100039,China;Beijing Metstar Radar Co.,Ltd,Beijing 100094,China)

机构地区：[1]苏州威陌电子信息科技有限公司,江苏苏州215312 [2]中企基业(北京)管理顾问有限公司,北京100039 [3]北京敏视达雷达有限公司,北京100094

出　　处：《探测与控制学报》2022年第4期123-128,共6页Journal of Detection & Control

摘　　要：常规转台成像需要目标部件与探测设备之间存在不同的相对运动,对于非连续转动的步进转台系统,该成像方法无效。为了解决步进转台成像难题和消除对目标部件多普勒频移的成像依赖性,提出将虚拟透镜成像技术应用到转台成像系统中,通过分析新成像系统的特性,针对转台主动式成像进行了算法拓展,给出了转台成像算法模型,优化了相位补偿方法。最后进行了被动式和主动式步进转台成像仿真,获得了较好的成像效果,仿真结果验证了新转台成像方法的有效性。Conventional turntable imaging requires different relative motions between the target component and the detection device.For the stepping turntable system with discontinuous rotation,the imaging method becomes invalid.In order to solve the problem of stepping turntable imaging and eliminate the imaging dependence on doppler shift of target components,a virtual lens imaging technology was applied to the turntable imaging system.By analyzing the characteristics of the new imaging system,the algorithm is extended for the active turntable imaging system.The imaging algorithm model of turntable was given and the phase compensation method was optimized.Finally,imaging simulation of passive and active stepping turntable was carried out.Simulation results verified the effectiveness of the new turntable imaging method.

关 键 词：转台成像 虚拟透镜成像 逆合成孔径雷达 合成孔径雷达 微波成像 

分 类 号：TN015[电子电信—物理电子学] TN957.52