Signal processing method for a towed linear antenna

Details Signal processing method for a towed linear antenna Signal processing method for a towed linear antenna

2006-07-11

2006-07-11

Pihulic, Daniel (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Beam stabilization or compensation

Reexamination Certificate

active

07075858

ABSTRACT:
The disclosure relates to a signal processing method for a towed linear antenna, notably to resolve right-left ambiguity, said antenna comprising a set of hydrophone multiplets each with n≧3 hydrophones spread over a straight section of the longitudinal axis of said antenna, wherein the roll angle of each multiplet relative to the vertical is measured, the signals of said hydrophones and said roll angles are used to synthesize p≧3 linear sub-antennas, then M azimuth channels are formed with each sub-antenna and 2 adaptive right-left channels are formed from said p sub-antennas for each direction corresponding to each azimuth channel. The invention resolves right-left ambiguity with optimal performance in detection and for long antennas.

REFERENCES:
patent: 5058082 (1991-10-01), Bertheas et al.
patent: 2651950 (1991-03-01), None
patent: 2685848 (1993-07-01), None
patent: 2727765 (1996-06-01), None

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