摘要
近年来在机场等公共场合屡屡发生恐怖袭击事件,一种安全有效的毫米波安检成像技术应运而生,但是该技术采用的传统波数域算法存在从加载后向散射数据到重建图像耗时较大,无法完全满足快速安检成像的要求。故提出一种改进的主动式近场毫米波成像算法,该算法对近场毫米波成像首先进行邻近聚焦再结合一致聚焦函数来代替传统的匹配滤波函数和插值部分,所提算法可提高成像效率,使其更具实用性。通过大量的仿真实验和实测实验证实了所提算法的高分辨率和图像保真度。
A safe and effective millimeter wave(MMW)security imaging technology emerges as the times require for the terrorist attacks happened in public places such as airport.The technology adopting the traditional wavenumber domain algorithm has long time consumption from the back scattering data loading to image reconstruction,and can′t satisfy the requirement of fast security inspection imaging.Therefore,an improved active near-filed MMW imaging algorithm is proposed.The adjacent fo-cusing is performed for the near?filed MMW imaging,and then the consistent focus function is combined to replace the matched filtering function and interpolation.The algorithm can improve the imaging efficiency,and has high practicability.The high reso-lution and image fidelity of the algorithm were verified with massive simulations and actual experiments.
作者
何丰
陈艺
曹清亮
刘杰
HE Feng;CHEN Yi;CAO Qingliang;LIU Jie(School of Optoelectronic Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Institute of Electronic Engineering,China Academy of Engineering Physics,Mianyang 621900,China)
出处
《现代电子技术》
北大核心
2018年第7期49-53,共5页
Modern Electronics Technique
基金
重庆市教委科学技术研究项目资助(KJ130507)~~
关键词
主动式毫米波
安检成像
波数域算法
近场
邻近聚焦
匹配滤波
active millimeter wave
security inspection imaging
wavenumber domain algorithm
near-field
adjacent focusing
matched filtering
