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*RECONNAISSANCE SATELLITES
*SEA ICE
3
ICE
3
Ice and Permafrost
3
Infrared Detection and Detectors
3
OCEANS
3
REGIONS
3
Snow
3
*INFRARED IMAGES
2
AIRCRAFT
2
Active & Passive Radar Detection & Equipment
2
CHANNELS
2
COMPARISON
2
IMAGES
2
PE61153N
2
*AERIAL RECONNAISSANCE
1
*ARCTIC LEADS
1
*AVHRR(ADVANCED VERY HIGH RESOLUTION RADIOMETERS)
1
*ICE FORMATION
1
*INFRARED DETECTION
1
*MICROWAVE OPTICS
1
*MICROWAVE RADIOMETRY
1
*OCEANOGRAPHIC DATA
1
*SSM/I(SPECIAL SENSOR MICROWAVE/IMAGER)
1
*SYNTHETIC APERTURE RADAR
1
*WEATHER
1
AERIAL SURVEYS
1
AIRBORNE
1
ALGORITHMS
1
AMPLITUDE
1
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