Title: Method of and apparatus for sonar and related signal texture enhancement of recording media

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.

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Inventors: Klein, Martin (Salem, NH, US)

Application Number: 520788
Filing Date: 1974-11-04
Publication_date: 1976-08-17
Assignee: Klein Associates, Inc. (Salem, NH)
Primary Class(es): 367/115 333/14, 346/33EC, 367/88, 367/98, 367/900
Other Classes:
US Patent Ref:

3058110	Oct, 1962	Burns et al.	340/3.
3098210	Jul, 1963	Sparling et al.	340/3.
3227995	Jan, 1966	Rucklin	340/3.
3518578	Jun, 1970	Oppenheim et al.	333/14.
3629813	Dec, 1971	Drenkelfort	340/3.

Other Refs:
Primary Examiner: Wilbur, Maynard R.
Assistant Examiner: Buczinski, S. C.
Attorney: Rines and Rines