Airborne midwave and longwave infrared hyperspectral imaging of gases

Marc-André Gagnon; Pierre Tremblay; Simon Savary; Marc Duval; Vincent Farley; Martin Chamberland

doi:10.1117/12.2050588

22 May 2014 Airborne midwave and longwave infrared hyperspectral imaging of gases

Marc-André Gagnon, Pierre Tremblay, Simon Savary, Marc Duval, Vincent Farley, Martin Chamberland

Proceedings Volume 9106, Advanced Environmental, Chemical, and Biological Sensing Technologies XI; 91060C (2014) https://doi.org/10.1117/12.2050588
Event: SPIE Sensing Technology + Applications, 2014, Baltimore, MD, United States

Abstract

Characterization of gas clouds are challenging situations to address due to the large and uneven distribution of these fast moving entities. Whether gas characterization is carried out for gas leaks surveys or environmental monitoring purposes, explosives and/or toxic chemicals are often involved. In such situations, airborne measurements present distinct advantages over ground based-techniques since large areas can be covered efficiently from a safe distance. In order to illustrate the potential of airborne thermal infrared hyperspectral imaging for gas cloud characterization, measurements were carried out above smokestacks and a ground-based gas release experiment. Quantitative airborne chemical images of carbon monoxide (CO) and ethylene (C₂H₄) were obtained from measurements carried out using a midwave (MWIR, 3-5 μm) and a longwave (LWIR, 8-12 μm) airborne infrared hyperspectral sensor respectively. Scattering effects were observed in the MWIR experiments on smokestacks as a result of water condensation upon rapid cool down of the hot emission gases. Airborne measurements were carried out using both mapping and targeting acquisition modes. The later provides unique time-dependent information such as the gas cloud direction and velocity.

Citation Download Citation

Marc-André Gagnon, Pierre Tremblay, Simon Savary, Marc Duval, Vincent Farley, and Martin Chamberland "Airborne midwave and longwave infrared hyperspectral imaging of gases", Proc. SPIE 9106, Advanced Environmental, Chemical, and Biological Sensing Technologies XI, 91060C (22 May 2014); https://doi.org/10.1117/12.2050588

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available