Publikationsdatum:
2011-08-18
Beschreibung:
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.
Schlagwort(e):
EARTH RESOURCES AND REMOTE SENSING
Materialart:
Journal of Wildlife Management (ISSN 0022-541X); 47; 4, 19
Format:
text
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