物理学报Issue(21)：85-94,10.DOI:10.7498/aps.63.214102
缩比模型的宽频时域太赫兹雷达散射截面（RCS）研究
Broad-band time domain terahertz radar cross-section research in scale mo dels
摘要
Abstract
Based on terahertz time-domain spectroscopy (THz-TDS) technology, a broad-band time domain terahertz radar system can be used to do research on scattering characteristics of objects. At present, the optical structure and mechanism of this system-showing the radar detection principle and imaging mechanism-has attracted a lot of interest in the terahertz research field. Based on the femtosecond Ti: sapphire osillators pumped terahertz time-domain spectroscopy system, this paper constructs the first terahertz radar system in this country (0.1-1.3 THz). System calibration is carried out by measurements on standard metallic spheres. Three military scale models are measured by the Radar system. The shapes of the models are retrieved by the improved back projection algorithm, which verifies the new imaging mechanism based on time domain scattering signal. With high frequency broad band spectrum and high imaging resolution, the terahertz radar would make great contribution to stealth military units design and become a new research platform on terahertz scattering characteristics.关键词
太赫兹/雷达/雷达散射截面/成像Key words
terahertz radar/radar cross-section/back projection imaging引用本文复制引用
梁达川,魏明贵,谷建强,尹治平,欧阳春梅,田震,何明霞,韩家广,张伟力..缩比模型的宽频时域太赫兹雷达散射截面（RCS）研究[J].物理学报,2014,(21):85-94,10.基金项目
国家重点基础研究发展计划(批准号:2014CB339800)、国家自然科学基金(批准号:61107053,61138001)和国家重大科学仪器设备开发专项(批准号:2011YQ150021)资助的课题.* Project supported by the National Basic Research Program of China (Grant No.2014CB339800), the National Natural Science Foundation of China (Grant Nos.61107053,61138001), and the Major National Development Project of Scientific Instruments and Equipment of China (Grant No.2011YQ150021) （批准号:2014CB339800）
