High-precision terahertz frequency modulated continuous wave imaging method using continuous wavelet transform

Inspired by the extensive application of terahertz (THz) imaging technologies in the field of aerospace, we exploit a THz frequency modulated continuous-wave imaging method with continuous wavelet transform (CWT) algorithm to detect a multilayer heat shield made of special materials. This method use...

Full description

Saved in:
Bibliographic Details
Published in:Optical engineering 2018-02, Vol.57 (2), p.023108-023108
Main Authors: Zhou, Yu, Wang, Tianyi, Dai, Bing, Li, Wenjun, Wang, Wei, You, Chengwu, Wang, Kejia, Liu, Jinsong, Wang, Shenglie, Yang, Zhengang
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Inspired by the extensive application of terahertz (THz) imaging technologies in the field of aerospace, we exploit a THz frequency modulated continuous-wave imaging method with continuous wavelet transform (CWT) algorithm to detect a multilayer heat shield made of special materials. This method uses the frequency modulation continuous-wave system to catch the reflected THz signal and then process the image data by the CWT with different basis functions. By calculating the sizes of the defects area in the final images and then comparing the results with real samples, a practical high-precision THz imaging method is demonstrated. Our method can be an effective tool for the THz nondestructive testing of composites, drugs, and some cultural heritages.
ISSN:0091-3286
1560-2303
DOI:10.1117/1.OE.57.2.023108