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Thermal Infrared Multispectral Scanner

NASA Stennis Space Center, the Jet Propulsion Laboratory (JPL) and Daedalus Corporation have developed the Thermal Infrared Multispectral Scanner (TIMS) for exploiting mineral signature information. The TIMS is a Daedalus multispectral scanning system using a dispersive grating and a six element mercury cadmium telluride detector array to produce six discrete channels in the 8.2 to 12.2 micron region. Used as an airborne geologic remote sensing tool, the TIMS acquires mineral signature data that permits the discrimination of silicate, carbonate and hydrothermally altered rocks. TIMS data have been used extensively in volcanology research in the western United States, Hawaiian islands and Europe. The wavelength bands sampled are:

Channel Wavelength,
micrometers
1 8.2 - 8.6
2 8.6 - 9.0
3 9.0 - 9.4
4 9.4 - 10.2
5 10.2 - 11.2
6 11.2 - 12.2

Sensor/Aircraft Parameters:

Total Field of View: 76.56 degrees
Instant. Field of View: 2.5 mrad
Pixels/Scan Line: 638
Scan Rate: 7.3 (scans/second)
Ground Resolution: 163 feet (50 meters) at 65,000 feet
Swath Width: 16.9 nmi (31.3 km)
Ground Speed: 400 kts. (206 m/second)
Notes:
  • Onboard blackbodies are used for calibration.
  • This instrument belongs jointly to the NASA Stennis Space Center and JPL. The TIMS is flown on the C-130, ER-2, and the Stennis Learjet aircraft.
  • The sensor parameters given above are for ER-2 cruising altitude and speed.