EXPERIMENTAL EVALUATION OF THE APPARENT TEMPERATURE CONTRAST CREATED BY BURIED MINES AS SEEN BY AN IR IMAGER

PDF

Authors
  1. Simard, J-R.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
The detection of buried mines is a problem of prime interest internationally. One potential method to succeed in this task is to use passive IR imaging to form thermal images of the soil surface. Even though this technique has been intensively investigated for the last 15 years, only few publicly reported studies show quantitative measures of the apparent temperature contrast at the soil surface above buried mines. This document aims to improve this situation. Apparent temperature contrasts are measured for different mine-soil combinations over 24 hours periods with a camera sensitive to long wave infrared (8-12 mu m). The effect of the variation in burial depth is investigated and special attention is taken to differentiate the thermal effects associated with the soil disturbance from the mine itself. A maximum average of 2 degrees C in apparent thermal contrast is reported and this apparent thermal contrast disappears when the burial depth exceeds 8 cm for the case where the thermal disturbance is related to the buried mine only. A 50% increase (approxiamtes to 3 degrees C) is observed when the thermal effect of the soil disturbance is present. Furthermore, this last apparent thermal contrast shows little dependency with the burial depth. The results are promising for the detection of mines buried in compacted soil. TRUNCATED
Keywords
Soil disturbance;Temperature contrast
Report Number
DRES-607 —
Date of publication
01 Nov 1994
Number of Pages
42
DSTKIM No
95-00774
CANDIS No
148991
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: