Temperature Evaluated Mine Position Survey (TEMPS) application of dual-band infrared methodology

Conference · Thu Mar 01 00:00:00 EST 1990

DOI:https://doi.org/10.1117/12.2300255· OSTI ID:7196026

Del Grande, N.

We are investigating a temperature evaluated mine position survey (TEMPS) for remote detection of buried land mines. The TEMPS methodology uses two passive IR channels peaked near 5 and 10 microns to decouple temperature from emissivity related effects. The true (corrected) temperature maps show surface temperature variations of 0.2{degree}C. Corrections are made for air-path interference and reflected sky radiation. We exploit a property of Planck's radiation law which applies for small temperature excursions from 288 K. The radiant emittance is proportional to emissivity times absolute temperature to the power of (50/wavelength in microns). Our corrected temperature maps show patterns of conducted heat generated by buried objects which heat and cool at different rates than the surrounding materials. These patterns are distinguished from the patterns produced by surface objects. Their respective spatial, spectral, thermal, emissivity and temporal signatures differ. EG G flew a dual-band IR scanner at 60 m for our demonstration of the TEMPS methodology at Nellis AFB. We detected simulated mine targets covered by 10 cm of dry sand. Optimization of this technology is expected to enhance the capabilities of the military community for standoff mine detection and other applications. 9 refs., 11 figs., 1 tab.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOD; DOE/DP
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7196026
• Report Number(s): UCRL-JC-103264; CONF-900396-3; ON: DE90009182
• Resource Relation: Conference: IRIS Specialty Group meeting on passive sensors and atmospheric physics, Laurel, MD (USA), 13 Mar 1990
• Country of Publication: United States
• Language: English

Related Subjects

47 OTHER INSTRUMENTATION
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE
EXPLOSIVES
DETECTION
MEASURING INSTRUMENTS
INFRARED SPECTRA
AQUIFERS
ARCHAEOLOGY
DESIGN
DIFFUSION
FORECASTING
HEAT FLOW
HEAT FLUX
IMAGE PROCESSING
INTERFACES
MILITARY STRATEGY
MOISTURE
PARTICULATES
PLANNING
RADIATION SOURCES
REFLECTIVITY
SENSITIVITY
SOILS
SURFACE PROPERTIES
TECHNOLOGY ASSESSMENT
TEMPERATURE EFFECTS
TEMPERATURE GRADIENTS
VERIFICATION
WEATHER
OPTICAL PROPERTIES
PARTICLES
PHYSICAL PROPERTIES
PROCESSING
SPECTRA
440600* - Optical Instrumentation- (1990-)
450100 - Military Technology
Weaponry
& National Defense- Chemical Explosions & Explosives