Gas Sensing using Terahertz Time-Domain Spectroscopy

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dc.citation.bibtexNamearticleen_US
dc.citation.firstpage379en_US
dc.citation.issueNumber3en_US
dc.citation.journalTitleApplied Physics Ben_US
dc.citation.lastpage390en_US
dc.citation.volumeNumber67en_US
dc.contributor.authorMittleman, Daniel M.en_US
dc.contributor.authorJacobsen, R.H.en_US
dc.contributor.authorNeelamani, Rameshen_US
dc.contributor.authorBaraniuk, Richard G.en_US
dc.contributor.authorNuss, Martin C.en_US
dc.contributor.orgCenter for Multimedia Communications (http://cmc.rice.edu/)en_US
dc.contributor.orgDigital Signal Processing (http://dsp.rice.edu/)en_US
dc.date.accessioned2007-10-31T00:53:18Zen_US
dc.date.available2007-10-31T00:53:18Zen_US
dc.date.issued1998-01-15en_US
dc.date.modified2006-06-05en_US
dc.date.submitted2001-09-20en_US
dc.descriptionJournal Paperen_US
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.en_US
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.en_US
dc.identifier.doihttp://dx.doi.org/10.1007/s003400050520en_US
dc.identifier.urihttps://hdl.handle.net/1911/20096en_US
dc.language.isoengen_US
dc.subjectterahertz time-domain spectroscopyen_US
dc.subjectgas sensingen_US
dc.subjectsignal processingen_US
dc.subjectFourier analysisen_US
dc.subject.keywordterahertz time-domain spectroscopyen_US
dc.subject.keywordgas sensingen_US
dc.subject.keywordsignal processingen_US
dc.subject.keywordFourier analysisen_US
dc.subject.otherSignal Processing Applicationsen_US
dc.titleGas Sensing using Terahertz Time-Domain Spectroscopyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
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