Communications – electrical: acoustic wave systems and devices – Transponders – With plurality of transponders
Patent
1999-02-23
2000-12-19
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Transponders
With plurality of transponders
H04B 159
Patent
active
061635030
ABSTRACT:
A system, apparatus, and method for determining positions of underwater animals involves emplacement of an acoustic transponder on the animal and establishing communications with a transponder carried by a vessel whose position can be determined by receiving signals from an external source such as a GPS satellite in order to establish proximity of the animal to the vessel, the position of the vessel then being adopted as the position of the animal. Communications can be established either by communicating the position of the transceiver to the equipment on the animal for storage therein, or by communicating the identity of the animal to the vessel whose position has been determined for association with the position, and subsequent local storage on the vessel and/or communication to a central station.
REFERENCES:
patent: 5119341 (1992-06-01), Youngberg
patent: 5168473 (1992-12-01), Parra
patent: 5331602 (1994-07-01), McLaren
patent: 5408238 (1995-04-01), Smith
I.C. Russell, et al., A Telemetric Tracking System for High Resolution Monitoring of Fish Movements, International Council for the Exploration of the Sea, C.M. 1990/M:19; pp. 1-7, Denmark.
A. Moore, et al., A Technique for Tracking Atlantic Salmon (Salmor salar L.) Smolts Through Estuaries, International Council for the Exploration of the Sea, C.M. 1990/M:18, pp. 1-5, Denmark.
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