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Proceedings Paper

Factors related to low-slant angle affecting airborne video interpretability
Author(s): Darrell Young; Tariq Bakir; Robert Butto Jr.; Fred Petitti
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Paper Abstract

The following material is given to address the effect of low slant angle on video interpretability: 1) an equation for the minimum slant angle as a function of field-of-view to prevent no more than a &sqrt2; change in GSD across the scene; 2) evidence for reduced situational awareness due to errors in perceived depth at low slant angle converting to position errors; 3) an equation for optimum slant angle and target orientation with respect to maximizing exposed target area; 4) the impact of the increased probability of occlusion as a function of slant angle; 5) a derivation for the loss of resolution due to atmospheric turbulence and scattering. In addition, modifications to Video-NIIRS for low slant angle are suggested. The recommended modifications for low-slant angle Video-NIIRS are: 1) to rate at or near the center of the scene; and 2) include target orientations in the Video-NIIRS criteria.

Paper Details

Date Published: 26 April 2010
PDF: 12 pages
Proc. SPIE 7668, Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications VII, 76680N (26 April 2010); doi: 10.1117/12.849582
Show Author Affiliations
Darrell Young, Raytheon (United States)
Tariq Bakir, Harris Corp. (United States)
Robert Butto Jr., Photon Research Associates, Inc. (United States)
Fred Petitti, Raytheon (United States)

Published in SPIE Proceedings Vol. 7668:
Airborne Intelligence, Surveillance, Reconnaissance (ISR) Systems and Applications VII
Daniel J. Henry, Editor(s)

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