Sonar system for identifying foreign objects

Details Sonar system for identifying foreign objects Sonar system for identifying foreign objects

1994-03-31

1995-08-01

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

382195, G01S 1500

Patent

active

054385520

ABSTRACT:
A sonar system is provided for identifying a foreign object includes a technique for providing a two dimensional array of pixels, each one of the pixels representing the intensity of a signal at a predetermined range position and a predetermined cross-range position from a reference position and quantizing the intensity of each one of the pixels into one of a plurality of levels. The technique further includes comparing a distribution of the levels of pixels over a range scan at a cross-range position with the distribution of levels of pixels over a range scan at a different cross-range position to identify the existence of a foreign object. With such an arrangement a sonar system is provided that can automatically detect the existence of a foreign object such as a mine.

REFERENCES:
patent: 5018214 (1991-05-01), Pasch
patent: 5321667 (1994-06-01), Audi et al.

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