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Proceedings Paper

Overview Of IR Instrumentation In Ambient Air Monitoring
Author(s): Claus B. Ludwig
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Paper Abstract

A brief overview of point and remote monitors that operate in the infrared region is given . At present, optical correlations techniques are widely used in point samples. Thus, a brief description of the historical development is given, which started with the nondispersive infrared (NDIR) technique and has recently emerged as the gas filter correlation (GFC) technique. The basic theoretical formulation for GFC is given. Infrared remote monitors are applied more frequently in recent times. They include both active and passive systems. These systems come in many configurati ons, providing line integral, line average and line profile data. The theoretical sensitivity of practical systems is discussed, including eye safety considerations for laser systems.

Paper Details

Date Published: 15 November 1976
PDF: 7 pages
Proc. SPIE 0095, Modern Utilization of Infrared Technology II, (15 November 1976); doi: 10.1117/12.955158
Show Author Affiliations
Claus B. Ludwig, Science Applications, Inc. (United States)

Published in SPIE Proceedings Vol. 0095:
Modern Utilization of Infrared Technology II
Irving J. Spiro, Editor(s)

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