UNDERWATER DETECTION DEVICE AND UNDERWATER DETECTION METHOD

To provide an underwater detection device which detects both a shoal of fish and a trawl fishing gear, and can display echos thereof.SOLUTION: A transmission transducer 2 transmits transmission waves to the underwater, and a reception transducer 2 receives receiving waves including reflection of the...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	DUBUIS JEROME, ROGER SAETRE, OKUNISHI SATORU, NAGAI SANAE
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING
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