Mechanical design of the Crosstrack Infrared Sounder (CrIS)

Richard J. Kohrman; Scott D. Luce

doi:10.1117/12.455127

8 February 2002 Mechanical design of the Crosstrack Infrared Sounder (CrIS)

Richard J. Kohrman, Scott D. Luce

Proceedings Volume 4486, Infrared Spaceborne Remote Sensing IX; (2002) https://doi.org/10.1117/12.455127
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

The mechanical design characteristics of the CrIS sensor module is presented. Several structural and thermal challenges are addressed. An 8-cm optical system, which includes a scanner, interferometer, 25-cm focal length telescope, aft optics, and cooler, efficiently use the available volume (0.158 m3). The sensor manages 90 Watts of electronic dissipation while maintaining a stable radiometric environment. It uses multi-stage passive cooling to provide 81 K focal plane and 220 K aft optics temperatures for low-earth orbits at up to 90-degree orbit normal-to-sun angles. Structurally, the interferometer scanning mirror maintains pointing accuracy of less than 20 microradians in the presence of self-induced and external disturbances.

Citation Download Citation

Richard J. Kohrman and Scott D. Luce "Mechanical design of the Crosstrack Infrared Sounder (CrIS)", Proc. SPIE 4486, Infrared Spaceborne Remote Sensing IX, (8 February 2002); https://doi.org/10.1117/12.455127

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