Method of improving the restoration of images supplied by a late

Details Method of improving the restoration of images supplied by a late Method of improving the restoration of images supplied by a late

1985-12-30

1987-06-23

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Side scanning or contour mapping sonar systems

G01S 1589, G01S 752

Patent

active

046758534

ABSTRACT:
A method and device for improving the restoration of the images obtained from samples taken from acoustic signals received by a lateral aimed sonar provides for the selection of samples from the signals received, the time interval between the samples selected being smaller at the beginning of the echo reception window than at the end thereof so as to improve the power of resolution of the sonar for directions of low obliqueness. The sampling may be carried out at a variable frequency or else at a very high fixed frequency, the selection then being made among all the samples obtained.

REFERENCES:
patent: 4232380 (1980-11-01), Caron et al.

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