21 September 2004 Impact of soil and environmental processes on hyperspectral infrared signatures
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In this paper we present results from our research on the impact of various soil types and processes on LWIR broadbandand hyperspectral signatures of landmines and the surrounding soil. These analyses utilized our digital hyperspectral models of the combined landmine-soil system for the computation of these signatures. These physics-based models incorporate models for external environmental processes and allow soil thermal parameters to be set as a function of the subsurface conditions (i.e., porosity, moisture content). Under this research effort, signature computations were conducted for various soil types as a function of the underlying soil conditions in order to examine the relative impact of these conditions on both the broadband and spectral LWIR signatures. Of particular interest were changes in spectral features and contrast changes due to soil water content. Results from the digital signature computations will be presented along with an analysis of the signature features. A comparison of the digital signature calculations to measured data will be included in this discussion. A brief description of the signature model will also be presented.
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J. Michael Cathcart, J. Michael Cathcart, Ricardo Campbell, Ricardo Campbell, Sarah Greenwood, Sarah Greenwood, Robert D. Bock, Robert D. Bock, Brett Mauro, Brett Mauro, } "Impact of soil and environmental processes on hyperspectral infrared signatures", Proc. SPIE 5415, Detection and Remediation Technologies for Mines and Minelike Targets IX, (21 September 2004); doi: 10.1117/12.542783; https://doi.org/10.1117/12.542783

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