Development of an Instrument Performance Simulation Capability for an Infrared Correlation Radiometer For Tropospheric Carbon Monoxide Measurements From GEO

We present the progress toward an analytical performance model of a 2.3 micron infrared correlation
radiometer (IRCRg) prototype subsystem for a future geostationary spaceborne instrument. The prototype
is designed specifically to measure carbon monoxide (CO) from geostationary orbit. The Geostationary
Coastal and Air Pollution Events (GEO-CAPE) mission, one of the United States Earth Science and
Applications Decadal Survey missions, specifies infrared correlation radiometry to measure CO in two
spectral regions for this mission. We have structured this NASA Instrument Incubator Program-funded
development project to enable rapid evaluation of future spaceborne instrument designs once the GEO-
CAPE mission is determined. The architecture of the performance model and the evaluation of the
performance model using test data will be discussed.