A high range resolution algorithm for terahertz FMCW radar imaging

被引：0
|
作者：
Xu, Zhihao [1 ]
Hu, Weidong [1 ]
Jiang, Huanyu [1 ]
Yao, Zhiyu [1 ]
Ligthart, Leo [2 ]
机构：
[1] Beijing Inst Technol, Beijing Key Lab Millimeter Wave & Terahertz Techn, Beijing, Peoples R China
[2] Delft Univ Technol, Fac Elect Engn, NL-2600 GA Delft, Netherlands
来源：
2022 CROSS STRAIT RADIO SCIENCE & WIRELESS TECHNOLOGY CONFERENCE, CSRSWTC | 2022年
基金：
中国国家自然科学基金;
关键词：
terahertz; FMCW radar; range resolution; nondestructive testing;
D O I：
10.1109/CSRSWTC56224.2022.10098459
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The terahertz frequency modulation continuous wave (THz FMCW) imaging technology has been widely used in nondestructive testing (NDT) applications of non-metallic materials. However, due to the limited bandwidth of FMCW radar, which cannot meet the high-resolution detection requirements. In this paper, a 220-330 GHz FMCW radar and quasi-optical system are proposed. Moreover, a modified extended Fourier analysis algorithm based on continuous wavelet transform is proposed, which improves the radar range resolution from 2.9 mm to 0.8 mm. The effectiveness and advantages of the proposed algorithm are verified by artificially constructing composite materials.
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页数：3
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