This article describes a prototype spectroscopic sensing system that we have developed for detecting hazardous gases at the scene of a fire from a distance.First, the system's terahertz signal generator and receiver are briefly described.Then, sub-terahertz-band absorption spectra of smoke generated from heated nylon fabric are explained.Finally, a performance test of the developed sensing system carried out in a full-scale simulated fire is presented.
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Shimizu et al. (2012) studied this question.
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