US3609673A
Expired / Lapsed
US
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Sonar scanning method
Assignee: Fried Krupp AG
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Filing: 1969-07-16
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Granted: 1971-09-28
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Expires: 1989-07-16
Abstract
Abstract The invention concerns a sonar installation the transmitting device of which is switchable for the transmission of sounding pulses successively in different directions, within a circular sector of angular extent n according to the direction sequence (n/2), (n/2)+ 1, (n/2)- 1, (n/2)+ 2 ...where (n/2) is the approximate center of the circular sector, the + and - signs denote directions on either side of the (n/2) direction, and the integers 1, 2, etc. represent units of angular displacement.
Inventors
- 👤 Dietrich Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:14
CPC Classifications
G; G01; G01S; G01S15/00; G01S15/02; G01S15/06; G01S15/42
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
121 words
A method of operating a sonar transmitter to scan a sector of n degrees, the transmitter being of the type which emits a directional sounding pulse that covers a small segment of the sector, the method comprising the steps of transmitting a sequence of sounding pulses to cover the entire sector, the first sounding pulse in the sequence being directed along the direction (n/2) to cover a segment substantial at the center of the sector, and transmitting the subsequent pulses in the sequence along directions which are alternately on opposite sides of the direction of transmission of the first pulse, the subsequent pulses on the same side of the direction of transmission of the first pulse forming an echelon of pulses.
Claim 2
Independent Claim
121 words
A method of operating a sonar transmitter to scan a sector of n degrees, the transmitter being of the type which emits a directional sounding pulse that covers a small segment of the sector, the method comprising the steps of transmitting a sequence of sounding pulses to cover the entire sector, the first sounding pulse in the sequence being directed along the direction (n/2) to cover a segment substantial at the center of the sector, and transmitting the subsequent pulses in the sequence along directions which are alternately on opposite sides of the direction of transmission of the first pulse, the subsequent pulses on the same side of the direction of transmission of the first pulse forming an echelon of pulses.
Claim 3
Dependent Claim
38 words
The method according to claim 1 of operatinG a sonar transmitter, the method further comprising the step of concurrently employing a plurality of transmitters of the type emitting directional sounding pulses to simultaneous scan a plurality of sectors.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |