Method of and apparatus for sonar and related signal texture enh

Details Method of and apparatus for sonar and related signal texture enh Method of and apparatus for sonar and related signal texture enh

1974-11-04

1976-08-17

Wilbur, Maynard R.

Communications: electrical

Selective

Monitoring in addition to control

333 14, 340 3R, 346 33EC, G01S 966, G01D 900

Patent

active

039757048

ABSTRACT:
This invention provides two dramatic improvements in the state of the art of side scan sonar systems and the like, bringing out the fine details of the sonar signals to enhance the texture of the sonar charts and to improve the quality and interpretability of the sonar records, while additionally bringing the sonar signals into the dynamic range of the recording medium in such a way that the tuning of the sonar instrument is greatly simplified and, in many situations, may be run continuously with no operator's adjustment of the instrument controls. These ends are attained through a novel compressed-signal absolute value smoothing and derivative processing, with dynamic range matching to the recording medium.

REFERENCES:
patent: 3058110 (1962-10-01), Burns et al.
patent: 3098210 (1963-07-01), Sparling et al.
patent: 3227995 (1966-01-01), Rucklin
patent: 3518578 (1970-06-01), Oppenheim et al.
patent: 3629813 (1971-12-01), Drenkelfort

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