Dual beam sonar display system
First Claim
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1. A dual beam sonar display system comprising:
- A) sonar means for producing first and second fan shaped beams and for scanning them in overlapping relationship in respective first and second directions;
B) said sonar means being operable to provide a first set of beam signals from said first beam, indicative of targets in respective adjacent beam positions and a second set of beam signals from said second beam, indicative of targets in respective adjacent beam positions;
C) first storage means for storing target indications from said first set of beam signals;
D) means for comparing each beam signal from said second set with all the beam signals from said first set, for target coincidence;
E) second storage means for storing the results of said comparison;
F) display means;
G) third storage means for storing signals for presentation on said display means; and
H) means for transferring the contents of said second means to said third storage means for assembly of a complete picture to be displayed.
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Abstract
Docking sonar uses first and second fan-shaped beams sequentially scanning a target zone in mutually perpendicular directions. Target returns from one beam scan are compared with target returns from the other beam scan and the results are placed into a storage medium such as a video disc and then displayed on a conventional TV monitor, with brightness of the target on the display being an indication of target range.
14 Citations
15 Claims
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1. A dual beam sonar display system comprising:
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A) sonar means for producing first and second fan shaped beams and for scanning them in overlapping relationship in respective first and second directions; B) said sonar means being operable to provide a first set of beam signals from said first beam, indicative of targets in respective adjacent beam positions and a second set of beam signals from said second beam, indicative of targets in respective adjacent beam positions; C) first storage means for storing target indications from said first set of beam signals; D) means for comparing each beam signal from said second set with all the beam signals from said first set, for target coincidence; E) second storage means for storing the results of said comparison; F) display means; G) third storage means for storing signals for presentation on said display means; and H) means for transferring the contents of said second means to said third storage means for assembly of a complete picture to be displayed. - View Dependent Claims (2, 3, 4, 5, 7, 8, 9, 10, 12, 14, 15)
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- 6. B. the same data are written on both TV fields.
Specification
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Current AssigneeWestinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
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Original AssigneeWestinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
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InventorsWood, Kenneth E., O'Farrell, James T.
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Primary Examiner(s)Farley, Richard A.
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Application NumberUS05/710,969Time in Patent Office400 DaysField of Search340/3 C, 340/3 R, 343/5 SCUS Class Current367/11CPC Class CodesG01S 15/89 for mapping or imagingG01S 7/531 Scan convertersG01S 7/6218 providing two-dimensional c...
