FISH FINDER

To provide a fish finder that can shorten a distance of the dead zone while improving detection performance.SOLUTION: A fish finder includes: first control means 21a that transmits an ultrasonic beam TB from a vibrator 16 at a fixed first frequency f0 for a first time T1 and controls the reflected w...

Ausführliche Beschreibung

Bibliographische Detailangaben

1. Verfasser:	HIGUCHI KAZUKI
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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