Patent US3249934A successfully refreshed from Google Patents.
US3249934A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic lockon circuit for two lobe monopulse air-to-ground tracking radar
Assignee: Individual
•
Filing: 1964-03-18
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Granted: 1966-05-03
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Expires: 1984-03-18
Abstract
No abstract record available.
Inventors
- 👤 John D Hague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:10
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
158 words
AN AUTOMATIC LOCKON CIRCUIT FOR A MULTILOBE MONOPULSE AIR-TO-GROUND RADAR TRACKING LOOP HAVING SUM AND DIFFERENCE CHANNELS COUPLED TO A TARGET TRACKING MEANS FOR DEVELOPING THE SUM AND DIFFERENCE SIGNALS OF TARGET ECHO SIGNALS IN THE ANTENNA LOBES TO PRODUCE TARGET RANGE VOLTAGE COMPRISING: A VARIABLE TRACKING RANGE GATING MEANS COUPLED TO GATE EACH SUM AND DIFFERENCE CHANNEL TO PASS TARGET SIGNALS IN RECEIVER NOISE SIGNAL CLUTTER; A FIXED DELAY GATING MEANS IN SAID SUM CHANNEL TO GATE SAID SUM CHANNEL AT A RANGE BEYOND THE RANGE OF ANY TARGET TO GATE RECEIVER NOISE SIGNALS THERETHROUGH A PAIR OF COINCIDENCE DETECTOR CIRCUITS, EACH COUPLED TO RECEIVE THE OUTPUT OF SAID SUM CHANNEL VARAIBLE AND DELAY GATES; SAMPLING AREA GATING MEANS COUPLED TO EACH COINCIDENCE DETECTOR CIRCUIT TO APPLY ONE PORTION OF A GATING CYCLE TO ONE COINCIDENCE DETECTOR CIRCUIT TO GATE THROUGH TARGET AND RECEIVER NOISE SIGNALS PASSED BY SAID TRACKING RANGE GATE DETECTED AT A RESTORED DI-
Claim 2
Dependent Claim
158 words
AN AUTOMATIC LOCKON CIRCUIT FOR A MULTILOBE MONOPULSE AIR-TO-GROUND RADAR TRACKING LOOP HAVING SUM AND DIFFERENCE CHANNELS COUPLED TO A TARGET TRACKING MEANS FOR DEVELOPING THE SUM AND DIFFERENCE SIGNALS OF TARGET ECHO SIGNALS IN THE ANTENNA LOBES TO PRODUCE TARGET RANGE VOLTAGE COMPRISING: A VARIABLE TRACKING RANGE GATING MEANS COUPLED TO GATE EACH SUM AND DIFFERENCE CHANNEL TO PASS TARGET SIGNALS IN RECEIVER NOISE SIGNAL CLUTTER; A FIXED DELAY GATING MEANS IN SAID SUM CHANNEL TO GATE SAID SUM CHANNEL AT A RANGE BEYOND THE RANGE OF ANY TARGET TO GATE RECEIVER NOISE SIGNALS THERETHROUGH A PAIR OF COINCIDENCE DETECTOR CIRCUITS, EACH COUPLED TO RECEIVE THE OUTPUT OF SAID SUM CHANNEL VARAIBLE AND DELAY GATES; SAMPLING AREA GATING MEANS COUPLED TO EACH COINCIDENCE DETECTOR CIRCUIT TO APPLY ONE PORTION OF A GATING CYCLE TO ONE COINCIDENCE DETECTOR CIRCUIT TO GATE THROUGH TARGET AND RECEIVER NOISE SIGNALS PASSED BY SAID TRACKING RANGE GATE DETECTED AT A RESTORED DI-
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |