US3277476A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simulated doppler target
Assignee: Individual
•
Filing: 1964-04-23
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Granted: 1966-10-04
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Expires: 1984-04-23
Abstract
No abstract record available.
Inventors
- 👤 Robert J Sabin
- 👤 Jr Jose I Rivera
- 👤 Leon E Tatreault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:02
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4004; G01S7/4021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A TARGET SIMULATOR FOR A MOVING TARGET RADAR SYSTEM COMPRISING: MEANS TO RECEIVE A SIGNAL TRANSMITTED BY THE RADAR SYSTEM; MEANS TO GENERATE AN OUTPUT SIGNAL REPRESENTATIVE OF A PREDETERMINED DOPPLER SHIFT OF A SIMULATED MOVING TARGET, THE GENERATING MEANS INCLUDING A VARIABLE FREQUENCY LOCAL OSCILLATOR; MIXING MEANS CONNECTED TO THE RECEIVING MEANS AND THE LOCAL OSCILLATOR TO GENERATE A DOPPLER SIGNAL HAVING A FREQUENCY EQUAL TO THE DIFFERENCE BETWEEN THE FREQUENCIES OF THE RECEIVED SIGNAL AND THE OSCILLATOR OUTPUT SIGNAL; A REFERENCE FREQUENCY GENERATOR;
Claim 2
Dependent Claim
85 words
A TARGET SIMULATOR FOR A MOVING TARGET RADAR SYSTEM COMPRISING: MEANS TO RECEIVE A SIGNAL TRANSMITTED BY THE RADAR SYSTEM; MEANS TO GENERATE AN OUTPUT SIGNAL REPRESENTATIVE OF A PREDETERMINED DOPPLER SHIFT OF A SIMULATED MOVING TARGET, THE GENERATING MEANS INCLUDING A VARIABLE FREQUENCY LOCAL OSCILLATOR; MIXING MEANS CONNECTED TO THE RECEIVING MEANS AND THE LOCAL OSCILLATOR TO GENERATE A DOPPLER SIGNAL HAVING A FREQUENCY EQUAL TO THE DIFFERENCE BETWEEN THE FREQUENCIES OF THE RECEIVED SIGNAL AND THE OSCILLATOR OUTPUT SIGNAL; A REFERENCE FREQUENCY GENERATOR;
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) | 1969-10-03 | 1970-04-04 | 1970-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-03 | 1974-04-04 | 1974-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-03 | 1978-04-04 | 1978-10-04 | $7700.00 | Window Closed / Lapsed |