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US3129423A
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Target cancelling radar systems
Assignee: BAE Systems Electronics Ltd
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Filing: 1956-10-05
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Granted: 1964-04-14
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Expires: 1976-10-05
Abstract
No abstract record available.
Inventors
- 👤 Mortley Wilfrid Sinden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:25
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/5244
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A RADAR SYSTEM HAVING A RECEIVER PORTION INCLUDING AT LEAST TWO SIGNAL CHANNELS WITH THEIR INPUTS IN PARALLEL, MEANS IN ONE OF SAID CHANNELS FOR SUBSTANTIALLY CANCELLING SIGNALS DUE TO TARGETS HAVING ONE PRE-DETERMINED VELOCITY WITH REFERENCE TO THE SYSTEM, MEANS IN ANOTHER OF SAID CHANNELS FOR SUBSTANTIALLY CANCELLING SIGNALS DUE TO TARGETS HAVING ANOTHER PRE-DETERMINED VELOCITY WITH REFERENCE TO SAID SYSTEM, DETECTOR MEANS FED WITH THE OUTPUTS FROM SAID CHANNELS, SAID DETECTOR MEANS BEING ADAPTED TO PROVIDE ZERO OUTPUT WHEN ANY OF THE INPUTS THERETO IS ZERO, AND MEANS FOR UTILISING THE OUTPUT FROM SAID DETECTOR MEANS.
Claim 2
Dependent Claim
98 words
A RADAR SYSTEM HAVING A RECEIVER PORTION INCLUDING AT LEAST TWO SIGNAL CHANNELS WITH THEIR INPUTS IN PARALLEL, MEANS IN ONE OF SAID CHANNELS FOR SUBSTANTIALLY CANCELLING SIGNALS DUE TO TARGETS HAVING ONE PRE-DETERMINED VELOCITY WITH REFERENCE TO THE SYSTEM, MEANS IN ANOTHER OF SAID CHANNELS FOR SUBSTANTIALLY CANCELLING SIGNALS DUE TO TARGETS HAVING ANOTHER PRE-DETERMINED VELOCITY WITH REFERENCE TO SAID SYSTEM, DETECTOR MEANS FED WITH THE OUTPUTS FROM SAID CHANNELS, SAID DETECTOR MEANS BEING ADAPTED TO PROVIDE ZERO OUTPUT WHEN ANY OF THE INPUTS THERETO IS ZERO, AND MEANS FOR UTILISING THE OUTPUT FROM SAID DETECTOR MEANS.
References Cited (Backward Citations)
US2678440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |