Signalling method and apparatus for enhancing echo images

Details Signalling method and apparatus for enhancing echo images Signalling method and apparatus for enhancing echo images

1980-03-24

1982-06-15

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

343 5DP, G01S 1506

Patent

active

043354513

ABSTRACT:
A marine depth sounder uses digital techniques to enhance the image of a received acoustic pulse for providing expansion of a portion of the range information with high resolution.

REFERENCES:
patent: 2472209 (1949-06-01), Hall
patent: 3246285 (1966-04-01), Kryter
patent: 3363226 (1968-01-01), Murphree
patent: 3719920 (1973-03-01), Grada et al.
patent: 3761873 (1973-09-01), Hopkin
patent: 4050057 (1977-09-01), Backman, Jr. et al.
patent: 4104609 (1978-08-01), Minegishi et al.
patent: 4107678 (1978-08-01), Gross et al.

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