Atmospheric Infrared Sounder (AIRS) on the Earth-Observing System: in-orbit radiometric and spectral calibration

摘要

The atmospheric infrared sounder (AIRS) is a high spectral resolution IR spectrometer. AIRS, together with the advanced microwave sounding unit (AMSU) and the microwave humidity sounder (MHS), is designed to meet the operational weather prediction requirements of the National Oceanic and Atmospheric Administration (NOAA) and the global change research objectives of the National Aeronautics and Space Administration (NASA). The three instruments will be launched in the year 2000 on the EOS-PM1 spacecraft. Testing of the AIRS engineering model starts in 1996. The AIRS instrument represents a major step forward in satellite based remote sensing technology. In particular, improvements in second generation PV:HgCdTe detector array/readout technology coupled with a rapid advance in long life, low vibration, Stirling/pulse tube cryocooler design have been instrumental. This paper focuses on in flight radiometric and spectral calibration of AIRS.