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Proceedings Paper

Systematic approach to integration and test of AIRS
Author(s): Fernando M. Faria
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Paper Abstract

The Atmospheric Infrared Sounder (AIRS) is a space-borne high spectral resolution grating array spectrometer designed to provide improved global atmospheric temperature and humidity profiles to aid in climate studies and weather prediction. AIRS, which is a key component of NASA's Earth Observing System, is a complex cryogenic optical instrument with demanding ground operating constraints and calibration requirements which place significant demands on integration and test processes. The approach adopted for the integration of the instrument, is one designed to minimize/eliminate 'surprises' at the instrument level testing, where problems are difficult, time consuming, and costly to identify, isolate, and repair. This philosophy is not just limited to the integration and test of the instrument, but rather starts with the system's design synthesis and flowdown of the requirements to the lower level components, subassemblies, and continues with testability features designed into the instrument. Mathematical models and simulations are created to accurately predict critical performance parameters at various subassembly levels which are subsequently validated with subsystem and assembly level tests. Ground support equipment and a comprehensive test and calibration facility were also designed to support this gradual build-up of instrument performance knowledge taking into account tests to be performed, data acquisition, real time data processing and diagnostics, data analyses, data archival and dissemination. Presented in this paper are an overview of the instrument, the integration and test philosophy, the integration process/test flow, and the design approach for the ground support equipment and the test and calibration facility.

Paper Details

Date Published: 29 September 1995
PDF: 10 pages
Proc. SPIE 2553, Infrared Spaceborne Remote Sensing III, (29 September 1995); doi: 10.1117/12.221371
Show Author Affiliations
Fernando M. Faria, Loral Infrared & Imaging Systems (United States)

Published in SPIE Proceedings Vol. 2553:
Infrared Spaceborne Remote Sensing III
Marija Strojnik; Bjorn F. Andresen, Editor(s)

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