Calibration of the AIRS microwave instruments

Aqua carries three microwave radiometers that form an integral part of the Atmospheric Infrared Sounder (AIRS) sounding suite. Two Advanced Microwave Sounding Unit-A modules, one operating with two channels in the 23-31-GHz range and one operating with 12 channels in the 50-60-GHz range and one chan...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2003-02, Vol.41 (2), p.369-378
Main Author: Lambrigtsen, B.H.
Format: Article
Language:English
Subjects:
Atmospheric infrared sounder
Brazil
Calibration
Channels
Clouds
Humidity
Instruments
Microwaves
NASA
Ocean temperature
Propulsion
Radiometers
Sea measurements
Sounding
Space technology
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Summary:Aqua carries three microwave radiometers that form an integral part of the Atmospheric Infrared Sounder (AIRS) sounding suite. Two Advanced Microwave Sounding Unit-A modules, one operating with two channels in the 23-31-GHz range and one operating with 12 channels in the 50-60-GHz range and one channel at 89 GHz, provide all-weather temperature soundings and cloud information. The Humidity Sounder for Brazil operates with four channels in the 150-190-GHz range and provides all-weather humidity and cloud soundings. All are cross-track scanners, as is AIRS. While there are significant differences between these three instruments, they are sufficiently alike that a common approach can be used to calibrate them. We describe the instruments and their heritage, the onboard calibration system, and the ground-based calibration processing.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2002.808247