用户名: 密码: 验证码:
基于压缩感知的THz FMCW雷达三维成像算法研究
详细信息    查看官网全文
摘要
针对传统太赫兹调频连续波雷达成像算法中存在的空间扫描数据获取时间长等缺点,提出了一种基于压缩感知的太赫兹调频连续波成像算法。该算法通过空间稀疏采样获取部分数据,利用压缩感知重构算法实现信号恢复,并基于三维成像算法实现目标图像重建。太赫兹调频连续波雷达目标成像实验结果表明,本文提出的基于压缩感知的太赫兹调频连续波三维成像算法,可降低空间数据采集要求,进而提高成像效率。
In order to overcome the disadvantage like a long data acquisition time required in the conventional terahertz frequency modulation continuous wave(THz FMCW) radar imaging algorithms, an imaging algorithm based on compressed sensing is proposed in this paper. The compressed sensing reconstruction algorithm is initially applied to retrieve the radar echo signals from the spatially sparse measurement data, and then the image of object is obtained from the reconstructed signals with the three dimensional imaging algorithm. The presented THz FMCW radar imaging experimental results show that the proposed algorithm can decrease the requirement of spatial data measurement and improve the imaging efficiency.
引文
1 Knipper R,Brahm A,Heinz E,et al.THz absorption in fabric and its impact on body scanning for security application.IEEE Transactions on Terahertz Science and Technology,2015,5(6):999-1004.
    2 Cristofani E,Friederich F,Wohnsiedler S,et al.Nondestructive testing potential evaluation of a terahertz frequency-modulated continuous-wave imager for composite materials inspection.Opt ical Engineering,2014,53(3):031211-031211.
    3 Dengler R J,Cooper K B,et al.600 GHz imaging radar with 2cm range resolution.2007IEEE/MTT-S International Microwave Symposium,Honolulu,HI,2007:1371-1374.
    4 Jaeschke T,Bredendiek C,Pohl N.3D FMCW SAR imaging based on a 240 GHz Si Ge transceiver chip with integrated antenna.Ge Mi C2014;German Microwave Conference,Aachen,Germany,2014:1-4.
    5 成彬彬,江舸,杨陈,等.太赫兹FMCW雷达近感探测技术[J].制导与引信,2013(2):24-28.
    6 Ding J,Kahl M,Loffeld O,et al.THz 3-D image formation using SAR techniques:simulation,processing and experimental results[J].IEEE Transactions on Terahertz Science and Technology,2013,3(5):606-616.
    7 Li W,Ling Yu G,Qing Gong C,et al.Application of NUFFT to Terahertz FMCW 3-D imaging[C].Microwave and Millimeter Wave Technology(ICMMT),2016 IEEE International Conference on.IEEE,2016,2:952-954.
    8 Fang J,Xu Z,Zhang B,et al.Fast compressed sensing SAR imaging based on approximated observation[J].IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2014,7(1):352-363.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址:北京市海淀区学院路29号 邮编:100083

电话:办公室:(+86 10)66554848;文献借阅、咨询服务、科技查新:66554700