Forward looking echosounder

Details Forward looking echosounder Forward looking echosounder

1993-11-18

1995-02-14

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Beam stabilization or compensation

367 88, G01S 1589

Patent

active

053901525

ABSTRACT:
A forward looking echosounder uses a non-scanning forward looking transducer inclined from the horizontal at a 45.degree. angle. The forward looking transducer produces a set of acoustic data signals indicative of echo signals received along the central axis of the sonic beam as produced by the transducer. Distance and depth coordinates are used in conjunction with vessel speed and pitch angle to determine where the source of the received echo is located relative to the moving vessel. This information is then displayed in a quasi-real time display format.

REFERENCES:
patent: 3641484 (1972-02-01), White et al.
patent: 4057779 (1977-11-01), Iida et al.
patent: 4232380 (1980-11-01), Caron et al.
patent: 4445186 (1984-04-01), Caron et al.
patent: 4642801 (1987-02-01), Perny
patent: 4935906 (1990-06-01), Baker et al.
patent: 4970700 (1990-11-01), Gilmour et al.
Eagle Electronics, Z--7500 Operation Manual, 1987, pp. 23-24.

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