Airborne measurements in the infrared using FTIR-based imaging hyperspectral sensors

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Authors
  1. Puckrin, E.
  2. Turcotte, C.S.
  3. Lahaie, P.
  4. Dubé, D.
  5. Farley, V.
  6. Lagueux, P.
  7. Marcotte, F.
  8. Chamberland, M.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);Telops Inc, Quebec Que (CAN)
Abstract
Hyperspectral ground mapping is being used in an ever-increasing extent for numerous applications in the military, geology and environmental fields. The different regions of the electromagnetic spectrum help produce information of differing nature, The visible, near-infrared and short-wave infrared radiation (400 nm to 2.5 µm) has been mostly used to analyze reflected solar light, while the mid-wave (3 to 5 µm) and long-wave (8 to 12 µm or thermal) infrared senses the self-emission of molecules directly, enabling the acquisition of data during night time. Push-broom dispersive sensors have been typically used for airborne hyperspectral mapping. However, extending the spectral range towards the mid-wave and long-wave infrared brings performance limitations due to the self emission of the sensor itself. The Fourier-transform spectrometer technology has been extensively used in the infrared spectral range due to its high transmittance as well as throughput and multiplex advantages, thereby reducing the sensor self-emission problem. Telops has developed the Hyper-Cam, a rugged and compact infrared hyperspectral imager. The Hyper-Cam is based on the Fourier-transform technology yielding high spectral resolution and enabling high accuracy radiometric calibration. It provides passive signature measurement capability, with up to 320x256 pixels at spectral resolutions of up to 0.25 cm-1. The Hyper-Cam has been used on the ground in several field campaigns, including the
Report Number
DRDC-VALCARTIER-SL-2009-415 — Scientific Literature
Date of publication
01 Apr 2009
Number of Pages
12
DSTKIM No
CA033326
CANDIS No
532689
Format(s):
Electronic Document(PDF)

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