一种多体制兼容的微波成像新技术  

A Novel Multi-system Compatible Microwave Imaging Technology

作　　者：张继龙 张鑫[3] 王杨[3] 张继康 ZHANG Ji-long;ZHANG Xin;WANG Yang;ZHANG Ji-kang(Suzhou Weimo Electronic Information Technology Co.,Ltd,Suzhou 215312,China;Zhong Qi Ji Ye(Beijing)Management Consulting Co.,Ltd,Beijing 100039,China;Anhui Normal University,Wuhu 241002,China)

机构地区：[1]苏州威陌电子信息科技有限公司,苏州215312 [2]中企基业(北京)管理顾问有限公司,北京100039 [3]安徽师范大学,芜湖241002

出　　处：《微波学报》2022年第4期12-17,共6页Journal of Microwaves

摘　　要：虚拟透镜成像技术是一种可以兼顾远、中、近不同距离的成像新技术,但该技术是在被动成像的基础上发展起来的,适用于被动成像、半主动成像以及常规相控阵成像。在主动全息成像以及合成孔径成像系统中,由于天线单元依次工作并收发信号,目标回波信号具有不同的传播路径和相位延迟特性,因而不能直接采用虚拟透镜成像技术。文中对虚拟透镜成像技术进行扩展,针对主动全息成像和合成孔径成像的特点,引入了阵列属性参数,将其与信号传播路径和相位延迟特性进行关联,建立了一种多体制兼容的成像快速算法统一架构,并对相位加权算法进行了优化。所提出的新算法适用范围更广泛,且相位加权算法简洁易实现。最后进行了成像验证,实验及仿真结果证实了新算法的有效性。Virtual lens imaging technology is a new imaging technology that can take into account different distances.But this technology is developed from passive imaging system.It is suitable for passive imaging,semi-active imaging and conventional phased array imaging.In active holographic imaging system and synthetic aperture imaging system,the antenna units work and receive signals in sequence.Therefore virtual lens imaging technology cannot be used directly because target echo signal has different propagation path and phase delay characteristics.By extending virtual lens imaging technology and using a parameter of array characteristics,a unified architecture of multi-system compatible fast imaging algorithm is established based on the analysis of active holographic imaging system and synthetic aperture imaging system.The parameter of array characteristics is associated with signal propagation path and phase delay.And then phase weighting algorithm is optimized.The new proposed algorithm has a wider range of application and the phase weighting algorithm is simple and easy for implement.Finally,imaging verification is carried out.Experimental and simulation results verify the effectiveness of the new algorithm.

关 键 词：虚拟透镜成像 微波成像 雷达 微波全息成像 合成孔径雷达 

分 类 号：TN957.52[电子电信—信号与信息处理]