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NOAA Satellites
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Each satellite is equipped with instruments that provide pictures with profiles of temperature, atmospheric humidity and land and ocean surface temperature. To do this, the satellites carry the following instruments:
- A very high-resolution advanced radiometer
- A high-resolution infrared radiometer
- An advanced microwave sounding unit
- A solar back-scatter ultraviolet radiometer
- A microwave humidity sounder
- An operational TIROS Advanced vertical sounder
- An ARGOS data collection system
- A satellite-assisted search and rescue tracking system designed to detect and locate emergency locator beacons and emergency position indicating radio beacons on the 121.5 MHz, 243 MHz and 406.05 MHz frequencies.
- A communications system comprising 14 antennas, 9 transmitters and receivers using the VHF (30 MHz to 300 MHz), UHF (300 MHz to 3 GHz), L (1 to 2 GHz) and S (2 to 4 GHz) bands.
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The pictures transmitted consist of two black and white photographs. When the area photographed by the satellite is lit by the sun, the satellite uses the high-resolution radiometer and the infrared radiometer to transmit the images. When the area photographed by the satellite is in shadow, the satellite uses two different infrared radiometers.