遊泳魚の位置測定用の新しい遠隔計測法〔英文〕

概要

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A new tracking method of biotelemetry is described. The apparatuses used were composed of an acoustic transmitter (pinger), three sonobuoys, wireless receivers and two timeinterval counters.The sonobuoys were desigened to relay acoustic pulses from the pinger to a base station on land by wireless. These buoys were moored several hundred meters apart so as to form a triangle on the surface of the water. A fish carring the pinger was tracked in the circumscribed circle of the triangle. The wireless signals from the buoys were caught with three receivers at the bast station. The successive positions of the fish were calculated from the differences in the received times of the signals. The results of the tests showed that this method gives good positional information. It is possible to plot the successive positions of the fish on a X-Y plotboard with a computer.
日本水産學會の論文