A MULTI-BAND SEA SURFACE TEMPERATURE INFRARED RADIOMETER

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$496,994.00
Award Year:
1992
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
17025
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Ophir Corp.
3190 S Wadsworth Blvd #100, Lakewood, CO, 80227
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
RECENT RESEARCH HAS SHOWN THE IMPORTANCE OF CALIBRATING AND VERIFYING SATELLITE SEA-SURFACE-TEMPERATURE (SST) RADIOMETERS USING SHIPBOARD "SKIN" RADIOMETRIC THERMOMETERS RATHER THAN BUOY, IN-SITU THERMOMETERS. SINCE THE SATELLITE RADIOMETERS MEASURE SEA-SURFACE SKIN BRIGHTNESS TEMPERATURE, VERIFICATION SENSORS SHOULD MEASURE THE IDENTICAL SKIN TEMPERATURE TO ACHIEVE OPTIMUM SATELLITE RADIOMETER ACCURACY. BULK AND SKIN SSTS CAN DIFFER BY AS MUCH AS 2 DEGREES CENTIGRADE, WITH THE SKIN TEMPERATURE TYPICALLY 0.6 DEGREES CENTIGRADE COOLER THAN THE BULK TEMPERATURE. A 5-BAND, SHIP-MOUNTED, DOWN-LOOKING INFRARED RADIOMETRIC CALIBRATOR WILL BE DEVISED TO MEASURE SEA SURFACE BRIGHTNESS-TEMPERATURE TO WITHIN 0.02 DEGREES CENTIGRADE. IT IS AN EVOLUTIONARY EXTENSION OF AN EXISTING 4.25-3.7MUM AIRBORNE RADIOMETER. THE SST RADIOMETER WILL BE USED FOR SEA TRUTH CALIBRATION/VERIFICATION OF THE EXISTING AND PLANNED SATELLITE SEA-VIEWING RADIOMETERS. THE RADIOMETRIC CALIBRATOR IS AN IMPROVEMENT OVER CURRENT SENSORS IN THAT IT HAS VERY HIGH (0.02 DEGREES CENTIGRADE) THEORETICAL PRECISION, ACHIEVES NBS INTERCOMPARISON TRACEABILITY IN THE FIELD THROUGH A SEAWATER BUCKET CALIBRATION STANDARD AND TWO INTERNAL BLACKBODIES, AND IS DESIGNED TO USE 5 CHANNELS THAT MATCH EXACTLY THE CHANNEL PARAMETERS OF THE PLANNED MODERATE-RESOLUTION IMAGING SPECTROMETER-NADIR (MODIS-N) SST RADIOMETER SOON TO FLY ON THE EOS SATELLITE. RECENT RESEARCH HAS SHOWN THE IMPORTANCE OF CALIBRATING AND VERIFYING SATELLITE SEA-SURFACE-TEMPERATURE (SST) RADIOMETERS USING SHIPBOARD "SKIN" RADIOMETRIC THERMOMETERS RATHER THAN BUOY, IN-SITU THERMOMETERS. SINCE THE SATELLITE RADIOMETERS MEASURE SEA-SURFACE SKIN BRIGHTNESS TEMPERATURE, VERIFICATION SENSORS SHOULD MEASURE THE IDENTICAL SKIN TEMPERATURE TO ACHIEVE OPTIMUM SATELLITE RADIOMETER ACCURACY. BULK AND SKIN SSTS CAN DIFFER BY AS MUCH AS 2 DEGREES CENTIGRADE, WITH THE SKIN TEMPERATURE TYPICALLY 0.6 DEGREES CENTIGRADE COOLER THAN THE BULK TEMPERATURE. A 5-BAND, SHIP-MOUNTED, DOWN-LOOKING INFRARED RADIOMETRIC CALIBRATOR WILL BE DEVISED TO MEASURE SEA SURFACE BRIGHTNESS-TEMPERATURE TO WITHIN 0.02 DEGREES CENTIGRADE. IT IS AN EVOLUTIONARY EXTENSION OF AN EXISTING 4.25-3.7MUM AIRBORNE RADIOMETER. THE SST RADIOMETER WILL BE USED FOR SEA TRUTH CALIBRATION/VERIFICATION OF THE EXISTING AND PLANNED SATELLITE SEA-VIEWING RADIOMETERS. THE RADIOMETRIC CALIBRATOR IS AN IMPROVEMENT OVER CURRENT SENSORS IN THAT IT HAS VERY HIGH (0.02 DEGREES CENTIGRADE) THEORETICAL PRECISION, ACHIEVES NBS INTERCOMPARISON TRACEABILITY IN THE FIELD THROUGH A SEAWATER BUCKET CALIBRATION STANDARD AND TWO INTERNAL BLACKBODIES, AND IS DESIGNED TO USE 5 CHANNELS THAT MATCH EXACTLY THE CHANNEL PARAMETERS OF THE PLANNED MODERATE-RESOLUTION IMAGING SPECTROMETER-NADIR (MODIS-N) SST RADIOMETER SOON TO FLY ON THE EOS SATELLITE.

* information listed above is at the time of submission.

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