US3343162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clutter cancelling system
Assignee: Raytheon Co
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Filing: 1966-02-02
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Granted: 1967-09-19
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Expires: 1986-02-02
Abstract
No abstract record available.
Inventors
- 👤 Norol T Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:17
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/52; G01S13/522; G01S13/524; G01S13/526
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
190 words
IN A MOVING TARGET INDICATOR RADAR SYSTEM IN WHICH ENERGY OF A PREDETERMINED FREQUENCY REFLECTED FROM TARGETS IS RECEIVED AND CONVERTED INTO IF VIDEO SIGNALS ANALYZED TO INDICATE THE RELATIVE LOCATIONS OF MOVING TARGETS A SYSTEM FOR DISTINGUISHING THE MOVING TARGETS FROM CLUTTER MOVING AT A VELOCITY WHICH DOES NOT EXCEED A PREDETERMINED VALUE COMPRISING: A SOURCE OF A PLURALITY OF FREQUENCIES EACH RELATED TO SAID PREDETERMINED FREQUENCY AND A DIFFERENT VELOCITY VALUE, NOT EXCEEDING SAID PREDETERMINED VALUE; FIRST, SECOND AND THIRD IF VIDEO SIGNAL CHANNELS EACH CHANNEL INCLUDING A PHASE DETECTOR AND A DELAY LINE CANCELER COUPLED TO THE OUTPUT OF THE PHASE DETECTOR; MEANS FOR SUPPLYING THE PHASE DETECTOR OF EACH OF SAID CHANNELS WITH SAID IF VIDEO SIGNALS; FREQUENCY GATING MEANS FOR SELECTIVELY SUPPLYING THE PHASE DETECTORS OF SAID FIRST, SECOND AND THIRD CHANNELS WITH THREE OF SAID FREQUENCIES; AND RESIDUE COMPARING MEANS RESPONSIVE TO THE OUTPUTS OF THE CANCELERS OF SAID CHANNELS FOR VARYING THE THREE FREQUENCIES SUPPLIED TO SAID PHASE DETECTORS UNTIL THE OUTPUT OF THE CANCELER OF SAID SECOND CHANNEL IS SMALLER THAN THE OUTPUTS OF THE CANCELERS OF SAID FIRST AND THIRD CHANNELS.
Claim 2
Dependent Claim
190 words
IN A MOVING TARGET INDICATOR RADAR SYSTEM IN WHICH ENERGY OF A PREDETERMINED FREQUENCY REFLECTED FROM TARGETS IS RECEIVED AND CONVERTED INTO IF VIDEO SIGNALS ANALYZED TO INDICATE THE RELATIVE LOCATIONS OF MOVING TARGETS A SYSTEM FOR DISTINGUISHING THE MOVING TARGETS FROM CLUTTER MOVING AT A VELOCITY WHICH DOES NOT EXCEED A PREDETERMINED VALUE COMPRISING: A SOURCE OF A PLURALITY OF FREQUENCIES EACH RELATED TO SAID PREDETERMINED FREQUENCY AND A DIFFERENT VELOCITY VALUE, NOT EXCEEDING SAID PREDETERMINED VALUE; FIRST, SECOND AND THIRD IF VIDEO SIGNAL CHANNELS EACH CHANNEL INCLUDING A PHASE DETECTOR AND A DELAY LINE CANCELER COUPLED TO THE OUTPUT OF THE PHASE DETECTOR; MEANS FOR SUPPLYING THE PHASE DETECTOR OF EACH OF SAID CHANNELS WITH SAID IF VIDEO SIGNALS; FREQUENCY GATING MEANS FOR SELECTIVELY SUPPLYING THE PHASE DETECTORS OF SAID FIRST, SECOND AND THIRD CHANNELS WITH THREE OF SAID FREQUENCIES; AND RESIDUE COMPARING MEANS RESPONSIVE TO THE OUTPUTS OF THE CANCELERS OF SAID CHANNELS FOR VARYING THE THREE FREQUENCIES SUPPLIED TO SAID PHASE DETECTORS UNTIL THE OUTPUT OF THE CANCELER OF SAID SECOND CHANNEL IS SMALLER THAN THE OUTPUTS OF THE CANCELERS OF SAID FIRST AND THIRD CHANNELS.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |