2004
DOI: 10.6028/nist.ir.7172
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Abstract: A radiative-transfer model is used to assess the potential of ground-based, upwardlooking, passive microwave and millimeterwave radiometry from 5 GHz to 300 GHz for the standoff detection of chemical agents. The microwave and millimeterwave spectra of the agents and simulants were modeled using published ab initio quantum-mechanical predictions of the spectroscopic constants validated by laboratory spectroscopic measurements. The pressure-broadened microwave-to-millimeterwave rotational band contours vary in i…

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