Linear hydrophonic antenna and electronic device to remove right

Details Linear hydrophonic antenna and electronic device to remove right Linear hydrophonic antenna and electronic device to remove right

1990-08-23

1991-10-15

Pihulic, Daniel T.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

With towing

367 12, G01S 380

Patent

active

050580825

ABSTRACT:
A linear hydrophonic antenna with an associated portside/starboard ambiguity removing device comprises three streamers placed in an equilateral triangle, with a center distance of the order of a third of the wave length which corresponds to the center frequency received. The density of the median streamer is notably greater than the common density of the other two streamers. Channels are formed in a standard way, and the received signals are phase shifted then added up so that the directivity associated with each channel shows a zero, either at portside or at starboard, the direction of which remains fixed despite the roll.

REFERENCES:
patent: 1482980 (1924-02-01), Fay
patent: 3939469 (1976-02-01), Park
patent: 4078223 (1978-03-01), Strange

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