The effects of atmospheric compensation upon gaseous plume signatures

Benjamin L. Miller; David W. Messinger

doi:10.1117/12.603713

1 June 2005 The effects of atmospheric compensation upon gaseous plume signatures

Benjamin L. Miller, David W. Messinger

Author Affiliations +

Proceedings Volume 5806, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XI; (2005) https://doi.org/10.1117/12.603713
Event: Defense and Security, 2005, Orlando, Florida, United States

Abstract

The usual first step in the processing of hyperspectral imagery is to remove the effects of the atmosphere. In the thermal region this usually involves accounting only for the upwelling radiance and the atmospheric transmission; the downwelling contribution being ignorable. This however can cause difficulties in the quantification of the gases if the atmosphere is improperly compensated for. Several algorithms exist for the compensation of the atmosphere including In-scene Atmospheric Compensation (ISAC) and Autonomous Atmospheric Correction (AAC). This study looks at which atmospheric compensation technique, if any, has the least negative impact on the gas signatures in the LWIR region (8-12 microns) using synthetic hyperspectral imagery created with the DIRSIG simulation. Two different metrics were used to this end: spectral angle and feature depth. Because the depth of the gas feature is directly related to the gas' concentration path length and temperature, it proved to be the more telling of the two. Results show that these atmospheric compensation routines have little effect in the strength of the gas features investigated here and, as such, atmospheric compensation may not be necessary.

Citation Download Citation

Benjamin L. Miller and David W. Messinger "The effects of atmospheric compensation upon gaseous plume signatures", Proc. SPIE 5806, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XI, (1 June 2005); https://doi.org/10.1117/12.603713

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