Sonar transducer system for image formation

Details Sonar transducer system for image formation Sonar transducer system for image formation

1984-10-22

1988-10-18

Moskowitz, Nelson

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

367104, 367120, G01S 966, G01S 968

Patent

active

047792396

ABSTRACT:
A sonar transducer comprising a stack of an even number of antennae with identical linear networks. The stack is driven by a reciprocating rotary movement of low amplitude, with the antennae alternately emitting and receiving with each half wavelength of the rotary movement. The emitting antennae as well as the receiving antennae are mutually staggered by an angle equal to the angle of rotation of the assembly. The assembly of receiving antennae are staggered with respect to the assembly of emitting antennae by an angle equal to the phase delay of an emission lobe with respect to the corresponding reception lobe.

REFERENCES:
patent: 2865014 (1958-12-01), Malm
patent: 3121855 (1964-02-01), Thiede
patent: 3979711 (1976-09-01), Maginness et al.
patent: 4151834 (1979-05-01), Sato et al.
patent: 4271490 (1981-06-01), Minohara et al.
patent: 4300215 (1981-11-01), Jones
patent: 4479206 (1984-10-01), Granberg
patent: 4511998 (1985-04-01), Kanda et al.
patent: 4601024 (1986-07-01), Broding

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