HR: 1340h
AN: SF43A-0780    [Abstracts]
TI: SIRAS-G, the Spaceborne Infrared Atmospheric Sounder: Applications in Earth Science Observations
AU: * Kampe, T
EM: tkampe@ball.com
AF: Ball Aerospace & Technologies Corp., 1600 Commerce St, Boulder, CO 80301 United States
AB: The Spaceborne Infrared Atmospheric Sounder for Geosynchronous Earth Orbit (SIRAS-G) provides a new approach to infrared imaging spectrometry suitable for Earth observation from both low-Earth and geosynchronous orbit. SIRAS-G is currently in its second year of development as part of NASA's Instrument Incubator Program. This instrument concept exhibits lower mass and power requirements than heritage instruments such as AIRS and offers enhanced capabilities for measuring atmospheric temperature, water vapor, and trace gas column abundances. The flight instrument concept will measure infrared radiation in 2048 spectral channels with a nominal spectral resolution of 700 to 1100. The system employs wide field-of-view hyperspectral infrared optical system that splits the incoming radiation to four separate grating spectrometer channels. Combined with large 2-D focal planes, this system provides simultaneous spectral and high-resolution spatial imaging. In 1999, the SIRAS team built and tested SIRAS spectrometer No. 4 (12.3 - 15.4 microns) under IIP-1. SIRAS-G builds on this experience with a goal of producing a laboratory demonstration instrument including the scan assembly, telescope, a single spectrometer channel, focal plane and active cooling subsystem. In this paper, we describe the on-going development of this instrument concept, including design, fabrication and testing of the demonstration instrument, performance requirement predictions and potential future scientific instrument applications. The focus of this talk is on the application of SIRAS-G to key future Earth remote sensing observations.
DE: 6919 Electro-optics
DE: 6969 Remote sensing
DE: 6994 Instruments and techniques
DE: 0355 Thermosphere--composition and chemistry
SC: Special Focus: Advances in Data Acquisition, Management, Analysis and Display [SF]
MN: 2004 AGU Fall Meeting