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Enhanced Measurement of Paper Basis Weight Using Phase Shift in Terahertz Time-Domain Spectroscopy
Joint Authors
Fan, Mengbao
Cao, Binghua
Tian, Gui Yun
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-05-16
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
THz time-domain spectroscopy has evolved as a noncontact, safe, and efficient technique for paper characterization.
Our previous work adopted peak amplitude and delay time as features to determine paper basis weight using terahertz time-domain spectroscopy.
However, peak amplitude and delay time tend to suffer from noises, resulting in degradation of accuracy and robustness.
This paper proposes a noise-robust phase-shift based method to enhance measurements of paper basis weight.
Based on Fresnel Formulae, the physical relationship between phase shift and paper basis weight is formulated theoretically neglecting multiple reflections in the case of normal incidence.
The established formulation indicates that phase shift correlates linearly with paper basis weight intrinsically.
Subsequently, paper sheets were stacked to fabricate the samples with different basis weights, and experimental results verified the developed mathematical formulation.
Moreover, a comparison was made between phase shift, peak amplitude, and delay time with respect to linearity, accuracy, and noise robustness.
The results show that phase shift is superior to the others.
American Psychological Association (APA)
Fan, Mengbao& Cao, Binghua& Tian, Gui Yun. 2017. Enhanced Measurement of Paper Basis Weight Using Phase Shift in Terahertz Time-Domain Spectroscopy. Journal of Sensors،Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1186885
Modern Language Association (MLA)
Fan, Mengbao…[et al.]. Enhanced Measurement of Paper Basis Weight Using Phase Shift in Terahertz Time-Domain Spectroscopy. Journal of Sensors No. 2017 (2017), pp.1-14.
https://search.emarefa.net/detail/BIM-1186885
American Medical Association (AMA)
Fan, Mengbao& Cao, Binghua& Tian, Gui Yun. Enhanced Measurement of Paper Basis Weight Using Phase Shift in Terahertz Time-Domain Spectroscopy. Journal of Sensors. 2017. Vol. 2017, no. 2017, pp.1-14.
https://search.emarefa.net/detail/BIM-1186885
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1186885