Optical mine reconnaissance at the National Defence Research Establishment. Multispectral imaging and classification: thermodynamic soil modelling

Optical mine reconnaissance is carried out with sensors in the spectral band 0.2-12 μm. The procedure is multispectral in that a number of different sensors, i.e. IR cameras and a multispectral camera, are combined or that a number of spectral bands are analyzed with a camera by filtering methods. The sensors can be used to discover both surface-laid and buried mines. A thermal simulation model is used for theoretical studies of the physics behind the flow of heat between the mine and its surroundings. The purpose of the model is to show the influence of the different parameters. The studies are carried out in a laboratory and field measurements are also performed in relevant types of terrain. Some introductory measurements have been made using both the multispectral system and the thermal simulation model