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Proceedings Paper

Remote detection and size estimation of optical apertures
Author(s): Ove Steinvall; Bengt Ericson
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Paper Abstract

Detection of optical threats in the form of weapon sights and target acquisition systems is important and can be made using retro-detection or other techniques. It is also of great value if one can classify the optical systems so that proper counter action can be initiated. Several techniques to estimate the aperture size of the threatening aperture may be applied. In this paper a method based on image processing utilizing high resolution photographs will be presented. In order to investigate the potential to detect optical apertures, and also estimate the aperture sizes, some experiments were made using small black metal circular plates as well as real optics out to 2 km range. The targets were photographed using a commercial digital SLR camera with a telephoto lens. This was done from a laboratory about 20 meter above ground level with targets on the ground, which means that the turbulence was lower than it would have been closer to the ground. Detection and size estimation of optical apertures by image processing, has some potential which will be exemplified by the experimental results and some simulations.

Paper Details

Date Published: 7 October 2019
PDF: 15 pages
Proc. SPIE 11161, Technologies for Optical Countermeasures XVI, 111610I (7 October 2019); doi: 10.1117/12.2533035
Show Author Affiliations
Ove Steinvall, FOI-Swedish Defence Research Agency (Sweden)
Bengt Ericson, FOI-Swedish Defence Research Agency (Sweden)

Published in SPIE Proceedings Vol. 11161:
Technologies for Optical Countermeasures XVI
David H. Titterton; Robert J. Grasso; Mark A. Richardson, Editor(s)

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