US3197769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Doppler measurement systems
Assignee: Individual
•
Filing: 1962-09-06
•
Granted: 1965-07-27
•
Expires: 1982-09-06
Abstract
No abstract record available.
Inventors
- 👤 Roth Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:19
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/74; G01S13/82; G01S13/02; G01S13/50; G01S13/58; G01S13/583; G01S13/584
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
203 words
IN A DOPPLER DISTANCE MEASUREMENT SYSTEM UTILIZING AS STATIONARY CONTINUOUS WAVE TRANSMITER, SEVERAL STATIONARY RECEIVERS, ONE OF WHICH, THE PRIME RECEIVER, IS LOCATED AT THE TRANSMITTING STATION, A FREQUENCY GENERATOR WHICH GENERATES SEVERAL FREQUENCIES ONE OF WHICH IS USED FOR TRANSMISSION AT THE TRANSMITTER TO A TRANSPONDER LOCATED IN THE OBJECT TO BE TRACKED, SAID TRANSPONDER CONTAINING MEANS FOR RECEIVING THE SIGNAL, MULTIPLYING IT TO A NEW FREQUENCY PROPORTIONAL TO THE RECEIVED FREQUENCY, AND MEANS FOR RE-TRANSMITTED THE SIGNAL AT THE NEW FREQUENCY, SAID RE-TRANSMITTING FREQUENCY RADIATED TO SAID PRIME RECEIVER WHEREIN A SIGNAL AT A SECOND FREQUENCY FROM THE FREQUENCY GENERATOR IS USED TO HETERODYNE THE RECEIVED SIGNAL BY MEANS OF A SIGNAL MIXER TO A NEW FREQUENCY BEING SOME CONSTANT VALUE PLUS THE DOPPLER SHIFT, SAID FREQUENCY GENERATOR SUPPLYING ANOTHER SIGNAL AT A THIRED FREQUENCY WHICH IS PRECISELY EQUAL TO THE CONSTANT VALUE OF THE HETERODYNED SIGNAL, SAID HETERODYNED SIGNAL AND SAID THIRD FREQUENCY SIGNAL APPLIED TO AN ACCUMULATING COUNTER IN SUCH A MANNER AS TO ADD ONE COUNT FOR EACH CYCLE OF THE HETERODYNED FREQUENCY, AND TO SUBTRACT ONE COUNT FOR EACH CYCLE OF THE THIRD FREQUENCY, CAUSING THE ACCUMULATED TALLY OF SAID COUNTER TO BE PROPORTIONAL TO RANGE CHANGE.
Claim 2
Dependent Claim
203 words
IN A DOPPLER DISTANCE MEASUREMENT SYSTEM UTILIZING AS STATIONARY CONTINUOUS WAVE TRANSMITER, SEVERAL STATIONARY RECEIVERS, ONE OF WHICH, THE PRIME RECEIVER, IS LOCATED AT THE TRANSMITTING STATION, A FREQUENCY GENERATOR WHICH GENERATES SEVERAL FREQUENCIES ONE OF WHICH IS USED FOR TRANSMISSION AT THE TRANSMITTER TO A TRANSPONDER LOCATED IN THE OBJECT TO BE TRACKED, SAID TRANSPONDER CONTAINING MEANS FOR RECEIVING THE SIGNAL, MULTIPLYING IT TO A NEW FREQUENCY PROPORTIONAL TO THE RECEIVED FREQUENCY, AND MEANS FOR RE-TRANSMITTED THE SIGNAL AT THE NEW FREQUENCY, SAID RE-TRANSMITTING FREQUENCY RADIATED TO SAID PRIME RECEIVER WHEREIN A SIGNAL AT A SECOND FREQUENCY FROM THE FREQUENCY GENERATOR IS USED TO HETERODYNE THE RECEIVED SIGNAL BY MEANS OF A SIGNAL MIXER TO A NEW FREQUENCY BEING SOME CONSTANT VALUE PLUS THE DOPPLER SHIFT, SAID FREQUENCY GENERATOR SUPPLYING ANOTHER SIGNAL AT A THIRED FREQUENCY WHICH IS PRECISELY EQUAL TO THE CONSTANT VALUE OF THE HETERODYNED SIGNAL, SAID HETERODYNED SIGNAL AND SAID THIRD FREQUENCY SIGNAL APPLIED TO AN ACCUMULATING COUNTER IN SUCH A MANNER AS TO ADD ONE COUNT FOR EACH CYCLE OF THE HETERODYNED FREQUENCY, AND TO SUBTRACT ONE COUNT FOR EACH CYCLE OF THE THIRD FREQUENCY, CAUSING THE ACCUMULATED TALLY OF SAID COUNTER TO BE PROPORTIONAL TO RANGE CHANGE.
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) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |