29 July 2002 Scene simulation of passive millimeter-wave images of plastic and metal objects
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Abstract
This paper describes scene simulation in passive millimeter wave imaging. The appearance of metal and plastic objects are modeled lying flat on earth, as viewed at grazing incidence (from a ground platform) and perpendicularly (from an air platform), using a passive millimeter wave imager. The assumptions and essential physics behind the simulation are reviewed. The simulations are made in the atmospheric window at 90 GHz. Experimental data taken at 35 GHz is presented for comparison. It is demonstrated that metal objects have generally low radiation temperatures, in relation to their environments. Plastics, on the other hand, can have higher or lower radiation temperatures than their backgrounds, dependent on the polarization the type of earth, its condition and the amount of water present. In the cases demonstrated in this paper, the simulations agree well with the experimental data.
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Neil Anthony Salmon, Roger Appleby, Sean Price, "Scene simulation of passive millimeter-wave images of plastic and metal objects", Proc. SPIE 4719, Infrared and Passive Millimeter-wave Imaging Systems: Design, Analysis, Modeling, and Testing, (29 July 2002); doi: 10.1117/12.477464; https://doi.org/10.1117/12.477464
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