US3264644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Unambiguous range radar system
Assignee: Northrop Grumman Space and Mission Systems Corp
•
Filing: 1962-12-31
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Granted: 1966-08-02
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Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Don M Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:37
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/86; G01S13/02; G01S13/06; G01S13/08; G01S13/32; G01S13/36; G01S13/74; G01S13/82; G01S13/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN COMBINATION, MEANS FOR GENERATING AND TRANSMITTING CW CARRIER AND SUBCARRIER SIGNALS TO A REMOTE OBJECT, SAID SUBCARRIER SIGNAL BEING GENERATED BY MODULATING SAID CARRIER SIGNAL WITH A MODULATION SIGNAL, MEANS FOR RECEIVING CW CARRIER AND SUBCARRIER SIGNALS FROM SAID OBJECT, SAID RECEIVED SIGNALS HAVING A FIXED PHASE RELATION TO SAID TRANSMITTED CARRIER AND SUBCARRIER SIGNALS, MEANS FOR SWEEPING THE FREQUENCY OF SAID MODULATION SIGNAL IN A GIVEN DIRECTION FROM A FIRST FREQUENCY TO A SECOND FREQUENCY, AND MEANS FOR MEASURING THE PHASE DIFFERENCE BETWEEN THE MODULATION ON SAID TRANSMITTED SIGNALS AND THE MODULATION ON SAID RECEIVED SIGNALS DUE TO THE SWEEPING ACTION FOR DERIVING RANGE INFORMATION.
Claim 2
Dependent Claim
107 words
IN COMBINATION, MEANS FOR GENERATING AND TRANSMITTING CW CARRIER AND SUBCARRIER SIGNALS TO A REMOTE OBJECT, SAID SUBCARRIER SIGNAL BEING GENERATED BY MODULATING SAID CARRIER SIGNAL WITH A MODULATION SIGNAL, MEANS FOR RECEIVING CW CARRIER AND SUBCARRIER SIGNALS FROM SAID OBJECT, SAID RECEIVED SIGNALS HAVING A FIXED PHASE RELATION TO SAID TRANSMITTED CARRIER AND SUBCARRIER SIGNALS, MEANS FOR SWEEPING THE FREQUENCY OF SAID MODULATION SIGNAL IN A GIVEN DIRECTION FROM A FIRST FREQUENCY TO A SECOND FREQUENCY, AND MEANS FOR MEASURING THE PHASE DIFFERENCE BETWEEN THE MODULATION ON SAID TRANSMITTED SIGNALS AND THE MODULATION ON SAID RECEIVED SIGNALS DUE TO THE SWEEPING ACTION FOR DERIVING RANGE INFORMATION.
References Cited (Backward Citations)
US2966676A
Cited
US2451822A
Cited
US2556109A
Cited
US2978698A
Cited
US3054104A
Cited
US3114147A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |