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Proceedings Paper

Airborne measurements in the longwave infrared using an imaging hyperspectral sensor
Author(s): Jean-Pierre Allard; Martin Chamberland; Vincent Farley; Frédérick Marcotte; Matthias Rolland; Alexandre Vallières; André Villemaire
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Paper Abstract

Emerging applications in Defense and Security require sensors with state-of-the-art sensitivity and capabilities. Among these sensors, the imaging spectrometer is an instrument yielding a large amount of rich information about the measured scene. Standoff detection, identification and quantification of chemicals in the gaseous state is one important application. Analysis of the surface emissivity as a means to classify ground properties and usage is another one. Imaging spectrometers have unmatched capabilities to meet the requirements of these applications. Telops has developed the FIRST, a LWIR hyperspectral imager. The FIRST is based on the Fourier Transform technology yielding high spectral resolution and enabling high accuracy radiometric calibration. The FIRST, a man portable sensor, provides datacubes of up to 320×256 pixels at 0.35mrad spatial resolution over the 8-12 μm spectral range at spectral resolutions of up to 0.25cm-1. The FIRST has been used in several field campaigns, including the demonstration of standoff chemical agent detection. More recently, an airborne system integrating the FIRST has been developed to provide airborne hyperspectral measurement capabilities. The airborne system and its capabilities are presented in this paper. The FIRST sensor modularity enables operation in various configurations such as tripod-mounted and airborne. In the airborne configuration, the FIRST can be operated in push-broom mode, or in staring mode with image motion compensation. This paper focuses on the airborne operation of the FIRST sensor.

Paper Details

Date Published: 17 April 2008
PDF: 12 pages
Proc. SPIE 6954, Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing IX, 69540M (17 April 2008); doi: 10.1117/12.776863
Show Author Affiliations
Jean-Pierre Allard, Telops Inc. (Canada)
Martin Chamberland, Telops Inc. (Canada)
Vincent Farley, Telops Inc. (Canada)
Frédérick Marcotte, Telops Inc. (Canada)
Matthias Rolland, Telops Inc. (Canada)
Alexandre Vallières, Telops Inc. (Canada)
André Villemaire, Telops Inc. (Canada)

Published in SPIE Proceedings Vol. 6954:
Chemical, Biological, Radiological, Nuclear, and Explosives (CBRNE) Sensing IX
Augustus Way Fountain III; Patrick J. Gardner, Editor(s)

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