US3155973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple pulse repetition frequency automatic range tracking pulse doppler radar
Assignee: Westinghouse Electric Corp
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Filing: 1956-06-13
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Granted: 1964-11-03
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Expires: 1976-06-13
Abstract
No abstract record available.
Inventors
- 👤 Harry B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:55
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66; G01S13/70; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/526; G01S13/528
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
176 words
IN A RADAR SYSTEM, A SOURCE OF ENERGY PULSES HAVING A FIRST REPETITION FREQUENCY, A SOURCE OF ENERGY PULSES HAVING A SECOND REPETITION FREQUENCY, MEANS FOR TRANSMITTING ENERGY PULSES OF SAID FIRST REPETITION FREQUENCY, MEANS FOR RECEIVING TRANSMITTED ENERGY PULSES REFLECTED FROM A DISTANT OBJECT, MEANS FOR PRODUCING A TRAIN OF VOLTAGE PULSES HAVING A REPETITION FREQUENCY EQUAL TO THE DIFFERENCE BETWEEN SAID FIRST AND SECOND REPETITION FREQUENCIES, MEANS FOR CHANGING THE REPETITION FREQUENCY OF SAID TRAIN OF PULSES TO SAID FIRST PULSES REPETITION FREQUENCY, MEANS FOR POSITIONING THE TRAIN OF PULSES AT SAID FIRST REPETITION FREQUENCY TO CORRESPOND IN PHASE WITH RECEIVED ENERGY PULSES AT SAID FIRST REPETITION FREQUENCY REFLECTED FROM A DISTANT OBJECT, MEANS FOR DETECTING PHASE COINCIDENCE OF PULSES IN SAID TRAIN OF PULSES WITH ENERGY PULSES TRANSMITTED AT THE FIRST REPETITION FREQUENCY, AND MEANS RESPONSIVE TO THE OUTPUT OF SAID DETECTING MEANS FOR CAUSING SAID TRANSMITTING MEANS TO TRANSMIT ENERGY PULSES OF SAID SECOND REPETITION FREQUENCY AND FOR CHANGING THE REPETITION FREQUENCY OF SAID TRAIN OF PULSES TO SAID SECOND REPETITION FREQUENCY.
Claim 2
Dependent Claim
176 words
IN A RADAR SYSTEM, A SOURCE OF ENERGY PULSES HAVING A FIRST REPETITION FREQUENCY, A SOURCE OF ENERGY PULSES HAVING A SECOND REPETITION FREQUENCY, MEANS FOR TRANSMITTING ENERGY PULSES OF SAID FIRST REPETITION FREQUENCY, MEANS FOR RECEIVING TRANSMITTED ENERGY PULSES REFLECTED FROM A DISTANT OBJECT, MEANS FOR PRODUCING A TRAIN OF VOLTAGE PULSES HAVING A REPETITION FREQUENCY EQUAL TO THE DIFFERENCE BETWEEN SAID FIRST AND SECOND REPETITION FREQUENCIES, MEANS FOR CHANGING THE REPETITION FREQUENCY OF SAID TRAIN OF PULSES TO SAID FIRST PULSES REPETITION FREQUENCY, MEANS FOR POSITIONING THE TRAIN OF PULSES AT SAID FIRST REPETITION FREQUENCY TO CORRESPOND IN PHASE WITH RECEIVED ENERGY PULSES AT SAID FIRST REPETITION FREQUENCY REFLECTED FROM A DISTANT OBJECT, MEANS FOR DETECTING PHASE COINCIDENCE OF PULSES IN SAID TRAIN OF PULSES WITH ENERGY PULSES TRANSMITTED AT THE FIRST REPETITION FREQUENCY, AND MEANS RESPONSIVE TO THE OUTPUT OF SAID DETECTING MEANS FOR CAUSING SAID TRANSMITTING MEANS TO TRANSMIT ENERGY PULSES OF SAID SECOND REPETITION FREQUENCY AND FOR CHANGING THE REPETITION FREQUENCY OF SAID TRAIN OF PULSES TO SAID SECOND REPETITION FREQUENCY.
References Cited (Backward Citations)
US2419541A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |