Gas Sensing using Terahertz Time-Domain Spectroscopy

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dc.citation.bibtexNamearticle
dc.citation.firstpage379
dc.citation.issueNumber3
dc.citation.journalTitleApplied Physics B
dc.citation.lastpage390
dc.citation.volumeNumber67
dc.contributor.authorMittleman, Daniel M.
dc.contributor.authorJacobsen, R.H.
dc.contributor.authorNeelamani, Ramesh
dc.contributor.authorBaraniuk, Richard G.
dc.contributor.authorNuss, Martin C.
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)
dc.contributor.orgDigital Signal Processing (http://dsp.rice.edu/)
dc.date.accessioned2007-10-31T00:53:18Z
dc.date.available2007-10-31T00:53:18Z
dc.date.issued1998-01-15
dc.date.modified2006-06-05
dc.date.submitted2001-09-20
dc.descriptionJournal Paper
dc.description.abstractA method for detection and identification of polar gases and gas mixtures based on the technique of terahertz time-domain spectroscopy is presented. This relatively new technology promises to be the first portable far-infared spectrometer, providing a means for real-time spectroscopic measurements over a broad bandwidth up to several THz. The measured time-domain waveforms can be efficiently parameterized using standard tools from signal processing, including procedures developed for speech recognition applications. These are generally more efficient than conventional methods based on Fourier analysis, and are easier to implement in a real-time sensing system. Preliminary results of real-time gas mixtures analysis using a linear predictive coding algorithm are presented. A number of possible avenues for improved signal processing schemes are discussed. In particular, the utility of a wavelet-based signal analysis for tasks such as denoising is demonstrated.
dc.identifier.citationD. M. Mittleman, R. Jacobsen, R. Neelamani, R. G. Baraniuk and M. C. Nuss, "Gas Sensing using Terahertz Time-Domain Spectroscopy," <i>Applied Physics B,</i> vol. 67, no. 3, 1998.
dc.identifier.doihttp://dx.doi.org/10.1007/s003400050520
dc.identifier.urihttps://hdl.handle.net/1911/20096
dc.language.isoeng
dc.subjectterahertz time-domain spectroscopy
dc.subjectgas sensing
dc.subjectsignal processing
dc.subjectFourier analysis
dc.subject.keywordterahertz time-domain spectroscopy
dc.subject.keywordgas sensing
dc.subject.keywordsignal processing
dc.subject.keywordFourier analysis
dc.subject.otherSignal Processing Applications
dc.titleGas Sensing using Terahertz Time-Domain Spectroscopy
dc.typeJournal article
dc.type.dcmiText
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