Three-Dimensional Terahertz Continuous Wave Imaging Radar for Nondestructive Testing

doi:10.1109/ACCESS.2020.3014170

	Three-Dimensional Terahertz Continuous Wave Imaging Radar for Nondestructive Testing
	Zhang, Xiaoxuan 2; Chang, Tianying 1,2; Wang, Zhongmin 2; Cui, Hong-Liang 3
刊名	IEEE ACCESS
	2020
卷号	8 页码:144259-144276
关键词	Radar imaging Imaging Three-dimensional displays Free electron lasers Bandwidth Quantum cascade lasers Continuous wave imaging sensors nondestructive testing three-dimensional reconstruction all-solid-state electronics
ISSN号	2169-3536
DOI	10.1109/ACCESS.2020.3014170
通讯作者	Chang, Tianying(tchang@jlu.edu.cn)
英文摘要	In recent years, our research group has been devoting substantial efforts to the research and development of active all-solid-state electronic terahertz (THz) continuous wave imaging systems for nondestructive testing, which is currently benefitting from the increasing amount of transmitting power, high performance/cost ratio and adaptability to engineering. In this paper, an in-house developed broadband linear frequency modulated continuous wave (LFMCW) three-dimensional (3D) THz imaging system is described, and two sets of experimental platforms are set up to assist the planning and completion of the research, including a narrow-band LFMCW 3D imaging radar and a wide-band stepped-frequency modulated continuous wave 3D imaging radar. For 3D imaging systems, to cope with demanding scenarios and to achieve excellent imaging performance, various reconstruction algorithms are explored. The first is a spectral refinement and correction approach based on fast Fourier transform and modern spectral estimation for accurate thickness measurement. The second is the synthetic aperture radar imaging algorithm for surface detection or internal detection of objects with lower refractive index. The third is a 3D reconstruction algorithm based on half space Green's function and the exploding source model for the interior detection of materials with higher refractive index. The fourth is the frequency interference algorithm combining phase unwrapping to measure uneven and nonplanar surfaces. Exploiting these systems, along with the associated experimental platforms and reconstruction algorithms, we successfully implemented non-destructive testing for objects with various defects and of different materials, such as polymer boards with voids, and foam with inclusions.
资助项目	National Natural Science Foundation of China[61875196] ; National Natural Science Foundation of China[61705120] ; Major Scientific and Technological Innovation Projects of Shandong Province[2019JZZY010448]
WOS研究方向	Computer Science ; Engineering ; Telecommunications
语种	英语
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
WOS记录号	WOS:000561883400001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/11660]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Chang, Tianying
作者单位	1.Qilu Univ Technol, Inst Automat, Shandong Acad Sci, Jinan 250014, Peoples R China 2.Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130012, Peoples R China 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaoxuan,Chang, Tianying,Wang, Zhongmin,et al. Three-Dimensional Terahertz Continuous Wave Imaging Radar for Nondestructive Testing[J]. IEEE ACCESS,2020,8:144259-144276.
APA	Zhang, Xiaoxuan,Chang, Tianying,Wang, Zhongmin,&Cui, Hong-Liang.(2020).Three-Dimensional Terahertz Continuous Wave Imaging Radar for Nondestructive Testing.IEEE ACCESS,8,144259-144276.
MLA	Zhang, Xiaoxuan,et al."Three-Dimensional Terahertz Continuous Wave Imaging Radar for Nondestructive Testing".IEEE ACCESS 8(2020):144259-144276.