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Distinguishing between materials in terahertz imaging using wide-band cross ambiguity functions
- Source :
- Digital Signal Processing. 14:99-111
- Publication Year :
- 2004
- Publisher :
- Elsevier BV, 2004.
-
Abstract
- Terahertz pulsed imaging is a novel imaging technique whereby sub pico-second broadband THz pulses are used in the analysis of samples, through transmission and reflection modalities. This paper briefly introduces terahertz pulsed imaging and its potential medical applications, before exploring how wavelet analysis may be used in categorising terahertz imaged samples, specifically the use of the terahertz reference pulse as a mother function through wide-band cross ambiguity functions. We show that analysis using ambiguity functions can distinguish between a nylon and a resin step wedge phantom, and furthermore that the results obtained are consistent with those of traditional time domain and Fourier based techniques.
- Subjects :
- Physics
business.industry
Terahertz radiation
Applied Mathematics
media_common.quotation_subject
Ambiguity
Imaging phantom
symbols.namesake
Optics
Wavelet
Fourier transform
Computational Theory and Mathematics
Artificial Intelligence
Signal Processing
Broadband
symbols
Reflection (physics)
Computer Vision and Pattern Recognition
Time domain
Electrical and Electronic Engineering
Statistics, Probability and Uncertainty
business
media_common
Subjects
Details
- ISSN :
- 10512004
- Volume :
- 14
- Database :
- OpenAIRE
- Journal :
- Digital Signal Processing
- Accession number :
- edsair.doi...........785db3fbbd51a17520be5140b2efa2dc