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Proceedings Paper

Laser imaging of small surface vessels and people at sea
Author(s): Ove Steinvall; Magnus Elmqvist; Kjell Karlsson; Håkan Larsson; Maria Axelsson
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Paper Abstract

The development of new asymmetric threats to civilian and naval ships has been a relatively recent occurrence. The bombing of the USS Cole is one example and the pirate activities outside Somalia another. There is a need to recognize targets at long ranges and possibly also their intentions to prepare for counteractions. Eye safe laser imaging at 1.5 μm offers target recognition at long ranges during day and night. The 1.5 μm wavelength is suitable for observing small targets at the sea surface such as boats and swimmers due to the low reflectivity of water compared to potential targets. Turbulence and haze limits the sensor performance and their influence is estimated for some cases of operational interest. For comparison, passive EO images have been recorded with the same camera to investigate the difference between sun illuminated and laser illuminated images. Examples of laser images will be given for a variety of targets and external conditions.Image segmentation for future automated recognition development is described and examplified. Examples of relevant 1.5 μm laser reflectivities of small naval targets are also presented. Finally a discussion of system aspects is made.

Paper Details

Date Published: 29 April 2010
PDF: 14 pages
Proc. SPIE 7684, Laser Radar Technology and Applications XV, 768417 (29 April 2010); doi: 10.1117/12.849388
Show Author Affiliations
Ove Steinvall, Swedish Defence Research Agency (Sweden)
Magnus Elmqvist, Swedish Defence Research Agency (Sweden)
Kjell Karlsson, Swedish Defence Research Agency (Sweden)
Håkan Larsson, Swedish Defence Research Agency (Sweden)
Maria Axelsson, Swedish Defence Research Agency (Sweden)

Published in SPIE Proceedings Vol. 7684:
Laser Radar Technology and Applications XV
Monte D. Turner; Gary W. Kamerman, Editor(s)

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