Remote performance prediction for infrared imaging of buried mines

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Authors
  1. Russell, K.
  2. McFee, J.
  3. Sirovyak, W.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
Infrared imagers are being investigated by several groups for use in landmine detection. The ability to predict detection performance is necessary to establish confidence for single sensor systems or to allow appropriate weighting of detector output for data fusion algorithms in multiple sensor systems. Preliminary studies had shown that the in-ground vertical temperature gradient was a good indicator of mine/background contrast in infrared images if temperature measurements and imager were colocated and limited data suggested that remote performance monitoring might be possible. To establish practicality of remote monitoring, temperature probes were buried at 5 sites separated by various distances between 30 m and 5.8 km, in asphalt, sand and gravel, both on and off road. Vertical temperature profiels were automatically recorded at all sites simultaneously with infrared images of buried thermal IR surrogate mines located at a gravel road site. The in-ground vertical temperature gradient was confirmed to be a practical indicator of the performance of an IR imager, for probes buried in all materials at distances up to almost 6 km from the imager. A five element probe with thermocouples uniformly placed at depths from -3 to -11 cm would be sufficient to predict detection performance.
Keywords
Thermal gradient;Temperature gradient
Report Number
DRES-SL-2000-0151 —
Date of publication
10 Oct 2000
Number of Pages
10
DSTKIM No
CA010093
CANDIS No
514410
Format(s):
Hardcopy;Document Image stored on Optical Disk

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