Inteferometric synthetic sonar antenna

Details Inteferometric synthetic sonar antenna Inteferometric synthetic sonar antenna

2006-01-10

2006-01-10

Phan, Tho (Department: 2821)

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

C343S853000, C367S087000

Reexamination Certificate

active

06985406

ABSTRACT:
The invention relates to an interferometric synthetic sonar antenna. It consists in processing the signals coming from the sensors of two superimposed parallel arrays forming the reception antenna, these two arrays being offset by a half-pitch between sensors, relative to each other and parallel to themselves. In a first mode of operation, the signals of the two arrays are processed to form a single synthetic antenna having a higher resolution in bearing than that of the two synthetic antennas of the interferomatric mode. In a second mode of operation, the signals of the two arrays are processes jointly in the auxiliary transmission frequency bands, enabling the two synthetic antennas to be self-calibrated with improved precision.

REFERENCES:
patent: 4400803 (1983-08-01), Spiess et al.
patent: 5200931 (1993-04-01), Kosalos et al.
patent: 5886950 (1999-03-01), Billon
patent: 6215730 (2001-04-01), Pinto
patent: 6304513 (2001-10-01), Billon
patent: 6418080 (2002-07-01), Inouchi

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