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Proceedings Paper

Single-and double-path laser link measurements over water
Author(s): Ove K. Steinvall; Goran Bolander; Lars Sjoqvist; Mikael Petersson; Ove K. S. Gustafsson; Folke Berglund; Lars Allard; Kjell Karlsson; Tomas Larsson; Frank Gustavsson
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Paper Abstract

Small target detection and tracking are important for laser systems in many applications such as Directed Infrared Countermeasures (DIRCM), fire control, target recognition and free-space laser communication. In order to evaluate performance of these applications in a marine environment we have performed laser propagation studies over the Baltic Sea during May to October 2003. The laser system consisted of a CO2 laser, a pointing and tracking head, a quadrant laser receiver, a TV and 3-5 μm IR camera and a laser range finder. The laser system was placed in a building 18m above water and corner cube targets and separate receivers were placed on islands at 2.5, 5.5 and 17 km range. Together with the laser registration, separate instruments such as a scintillometer and a weather station were recording the meteorological parameters. From the received signals irradiance fluctuation parameters for different beam offsets relative to the beam centre, temporal and amplitude signal distributions, probability and meant time of fade were derived. Results from single- and double-ended paths will be compared. The results will be discussed in relation to theoretical modelling and evaluated in view of some system aspects.

Paper Details

Date Published: 13 September 2004
PDF: 17 pages
Proc. SPIE 5412, Laser Radar Technology and Applications IX, (13 September 2004); doi: 10.1117/12.564937
Show Author Affiliations
Ove K. Steinvall, Swedish Defence Research Agency (Sweden)
Goran Bolander, Swedish Defence Research Agency (Sweden)
Lars Sjoqvist, Swedish Defence Research Agency (Sweden)
Mikael Petersson, Swedish Defence Research Agency (Sweden)
Ove K. S. Gustafsson, Swedish Defence Research Agency (Sweden)
Folke Berglund, Swedish Defence Research Agency (Sweden)
Lars Allard, Swedish Defence Research Agency (Sweden)
Kjell Karlsson, Swedish Defence Research Agency (Sweden)
Tomas Larsson, Swedish Defence Research Agency (Sweden)
Frank Gustavsson, Swedish Defence Research Agency (Sweden)


Published in SPIE Proceedings Vol. 5412:
Laser Radar Technology and Applications IX
Gary W. Kamerman; Gary W. Kamerman, Editor(s)

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