A laser system to remotely sense bird movements

A laser system to remotely sense bird movements

The design and operation of a laser detection system for migrating birds are presented. A battery-powered class-III laser (operating at 904 nm, pulse-repetition rate 5 kHz, pulse duration 100 nsec, and peak power 25 W) and a photodiode receiver are mounted on poles at height 10 m and distance 850 m...

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Veröffentlicht in:The Journal of wildlife management 1983-01, Vol.47 (4), p.1159-1162
Hauptverfasser: Korschgen, Carl E., Green, William L., Seasholtz, Richard G.
Format: Artikel
Sprache:eng
Schlagworte:
Animal migration behavior
Aves
Bird nesting
Birds
Earth Resources And Remote Sensing
Laser beams
Lasers
Power lines
Radar
Short Communications
Transmission lines
Transmitters
Waterfowl
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Beschreibung
Zusammenfassung:The design and operation of a laser detection system for migrating birds are presented. A battery-powered class-III laser (operating at 904 nm, pulse-repetition rate 5 kHz, pulse duration 100 nsec, and peak power 25 W) and a photodiode receiver are mounted on poles at height 10 m and distance 850 m and equipped with 135-mm f/2.8 collimating lenses; beam diameter at the receiver is 1.7 m. The microprocessor-controlled system is found to detect the passing of an object as small as 30 sq cm in cross section at a distance of 425 m.
ISSN:0022-541X
1937-2817
DOI:10.2307/3808183