上海航天（中英文）2026，Vol.43Issue(4)：83-91,9.DOI:10.19328/j.cnki.2096-8655.2026.04.009
基于涡旋电磁波的太赫兹前视三维成像方法
Forward-looking 3D Imaging Method for Therahertz Radar Based on Vortex Electromagnetic Waves
摘要
Abstract
In view of the fact that the traditional forward-looking radar imaging technology can only achieve two-dimensional(2D)imaging,in this paper,a forward-looking three-dimensional(3D)imaging method for terahertz radar is proposed.First,based on the multi-transmitter and multi-receiver mechanism of uniform circular array(UCA),an echo model for the forward-looking 3D imaging of terahertz vortex radar is established.Second,with the time-sharing multimodal scanning imaging method,3D imaging is achieved by using the amplitude and phase differences of different modal vortex electromagnetic waves,i.e.,the amplitude differences at different elevation angles and the phase differences at different azimuth angles,based on 2D imaging.Finally,an improved backward project-distance Doppler algorithm is proposed,by which the 3D focusing imaging of targets can be achieved while improving the imaging efficiency.The simulation imaging results of point targets verify the 3D imaging capability of the proposed method in the coverage scenarios of terahertz multimodal vortex waves.关键词
涡旋电磁波/太赫兹/前视三维(3D)成像/分时多模态Key words
vortex electromagnetic wave/terahertz/forward-looking three-dimensional(3D)imaging/time-sharing multimodal分类
信息技术与安全科学引用本文复制引用
李银伟,杨迪,李晓鹏,朱亦鸣,邱亮..基于涡旋电磁波的太赫兹前视三维成像方法[J].上海航天（中英文）,2026,43(4):83-91,9.基金项目
国家自然科学基金资助项目(62588201) （62588201）
上海市自然科学基金资助项目(21ZR1444300) （21ZR1444300）
国家重点研发计划资助项目(2023YFF0717900) （2023YFF0717900）
