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Proceedings Paper

Environmental qualification of the protoflight MODIS instrument
Author(s): Thomas L. Koch; Duane M. Bates; James L. Bell; Roger L. Hoelter; Craig James Kent; Steven M. Kus; David M. La Komski; John A. Leonard; John A. Mehrten; Jay R. Neumann; David L. Rogers; Thomas E. Wolverton
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Paper Abstract

A key milestone in NASA's Mission to Planet Earth project was achieved with the completion of Environmental Qualification testing of the Protoflight Model (PFM) Moderate Resolution Imaging Spectroradiometer (MODIS) instrument. Completing this task paved the way for MODIS to be integrated onto the EOS AM spacecraft which is to be launched as the keystone of the EOS system. Qualification of the PFM MODIS instrument required conducting an extensive test program in four different test facilities. Accomplishing environmental qualification testing, while meeting the stringent contamination and operational requirements for the MODIS instrument, required us to address a variety of issues and tasks. The main tasks included: developing special ground support test equipment, developing special tenting and handling equipment to protect the instrument from being contaminated during off-site environmental vibration an electromagnetic compatibility testing, designing and developing a state-of-the-art thermal-vacuum test chamber, and defining detailed test operations to fully characterize the instrument's electrical, optical and mechanical performance before, during and after each environmental test sequence. Selected penalty test were streamlined for characterizing the instrument whenever design changes or improved test techniques were incorporated to ensure all requirements had been met while maintaining a fully qualified instrument.

Paper Details

Date Published: 3 October 1998
PDF: 13 pages
Proc. SPIE 3439, Earth Observing Systems III, (3 October 1998); doi: 10.1117/12.325634
Show Author Affiliations
Thomas L. Koch, Raytheon Systems Co. (United States)
Duane M. Bates, Raytheon Systems Co. (United States)
James L. Bell, Raytheon Systems Co. (United States)
Roger L. Hoelter, Raytheon Systems Co. (United States)
Craig James Kent, Raytheon Systems Co. (United States)
Steven M. Kus, Raytheon Systems Co. (United States)
David M. La Komski, Raytheon Systems Co. (United States)
John A. Leonard, Raytheon Systems Co. (United States)
John A. Mehrten, Raytheon Systems Co. (United States)
Jay R. Neumann, Raytheon Systems Co. (United States)
David L. Rogers, Raytheon Systems Co. (United States)
Thomas E. Wolverton, Raytheon Systems Co. (United States)

Published in SPIE Proceedings Vol. 3439:
Earth Observing Systems III
William L. Barnes, Editor(s)

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