The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 1990
Filed:
May. 10, 1989
Applicant:
Inventor:
Georges Grall, Le Conquet, FR;
Assignee:
Thomson-CSF, Puteaux, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01S / ;
U.S. Cl.
CPC ...
367 88 ; 367105 ; 367106 ; 367111 ;
Abstract
In a sonar used to determine the characteristics of the underwater mines, the emission diagram in the vertical plane is modified to obtain two main lobes separated by a central zero value. At reception, the bearing/frequency display system shows a dark strip separated by two luminous strips. When the echo from a mine persists, in going through the dark zone, it is recognized that it pertains to a moored mine floating in the water, thus enabling moored mines to be identified and their submersion depth measured.