基于涡旋电磁波的雷达探测技术概述  

Overview of Vortex Electromagnetic Wave in Radar Detection

作　　者：周余昂 陈怡君 谢文宣[1] 朱永忠[1] ZHOU Yuang;CHEN Yijun;XIE Wenxuan;ZHU Yongzhong(School of Information Engineering,Engineering University of PAP,Xi'an 710086,China)

机构地区：[1]武警工程大学信息工程学院,西安710086

出　　处：《现代雷达》2021年第2期57-66,共10页Modern Radar

基　　金：国家自然科学基金资助项目(61771490);陕西省自然科学基金资助项目(2018JM6055);科研团队资助项目(KYTD201803);武警工程大学基础基金资助项目(WJY201606)。

摘　　要：涡旋电磁波具有螺旋相位波前结构,能比平面波获取更多的目标散射信息,因而在雷达探测与成像领域展现出巨大的潜力。文中根据涡旋电磁波的基本理论对其特性进行了数值仿真与分析;基于均匀圆阵的成像模型与回波处理流程,验证了平方贝塞尔函数在俯仰角的混叠特性;将平面波成像、关联成像的原理以及性质进行比较,以展示涡旋成像的优缺点;阐述了近几年涡旋成像以及旋转多普勒探测的研究进展,仿真验证了旋转多普勒的检测能力;同时,展望了基于涡旋电磁波雷达探测技术的未来发展方向。Due to the helical phase structure,vortex electromagnetic wave(VEMW)could obtain more scattering information than plan waves,thus it shows great potential in the field of radar detection and imaging.According to the basic principles of VEMW,its characteristics are numerically simulated and analyzed.The aliasing characteristics of the square Bessel function at the pitch an-gle are verified based on the uniform circular array imaging model and the echo signal processing.Then a comparison between prin-ciples and properties of plane wave imaging and radar correlated imaging is given to reveal the VEMW imaging's advantages and disadvantages.Moreover,the development and research actuality of the VEMW imaging and the rotational Doppler frequency de-tection are summarized and the detection capability of rotating Doppler is verified by simulation.Finally,the prospects for applica-tions of VEMW in radar detection are represented.

关 键 词：涡旋电磁波 轨道角动量 雷达成像 旋转多普勒检测 

分 类 号：TN957[电子电信—信号与信息处理]