a Department of Electrical Engineering and Center for Electro-Optics, Lincoln, NE 68588-0511, USA
b Mission Research Corporation, 1720 Randolph Road, S.E., Albuquerque, NM 87106-4245, USA
Abstract:
In this work we examine the time-dependent aspects of thermal imaging of buried metallic and non-metallic objects, when impulse heating of the soil surface is performed. A 1500 W carbon dioxide laser is used to provide the thermal impulse. Time-dependent thermal images are obtained using an infrared focal plane array camera and a gated data acquisition/analysis system. Experimental studies are conducted as a function of object material, size, and burial depth, and incident laser fluence. Quantitative evaluation of the surface temperature differentials as a function of time are presented.