Title:
MICROWAVE ENHANCED INFRARED THERMOGRAPHY
Document Type and Number:
WIPO Patent Application WO1999010731
Kind Code:
A8
Abstract:
A detection apparatus (10) incorporating microwave-enhanced infrared thermography for providing the detection, location and identification of underground devices. Microwave energy at a wavelength determined by the depth of the object (60) and the soil conditions is utilized to heat the underground target and the surrounding ground (80). The contrast in dielectric properties of the object with respect to the ground produces a contrast in absorbed energy of the underground device with respect to the surrounding soil. This contrast in absorbed energy as well as the contrast in thermal conductivity and specific heat of the underground object (60) with respect to the surrounding soil result in a concomitant contrast in the temperature at the surface of the ground (70). This contrast in temperature at the surface of the ground is detected and recorded by a device (40) such as an infrared camera from which the underground device can be precisely located and identified.
Inventors:
DIMARZIO CHARLES A
RAPPAPORT CAREY M
RAPPAPORT CAREY M
Application Number:
PCT/US1998/017762
Publication Date:
April 08, 1999
Filing Date:
August 27, 1998
Export Citation:
Assignee:
UNIV NORTHEASTERN (US)
International Classes:
G01N22/00; G01N25/72; (IPC1-7): G01N21/71; G01N22/00; G01N25/00
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