US3562750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous wave correlation radar
Assignee: United States Department of the Army
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Filing: 1966-06-15
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Granted: 1971-02-09
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Expires: 1986-06-15
Abstract
Abstract THE CONTINUOUS WAVE CARRIER OF THIS RADAR IS PERIODICALLY PHASE MODULATED. TARGET ECHOES ARE HETERODYNED WITH A SAMPLE OF THE PHASE-MODULATED TRANSMITTED WAVE AND THEN APPLIED IN PARALLEL TO AN ALL-RANGE CHANNEL AND A RANGING CHANNEL. THE ALL-RANGE CHANNEL RESPONDS TO TARGETS AT ALL RANGES AND THE RANGING CHANNEL CAN BE USED TO DETERMINE THE RANGE OF A PARTICULAR TARGET. THE DOPPLER MODULATION OF A RANGE-GATED TARGET IN THE RANGING CHANNEL IS CORRELATED WITH THE DOPPLER MODULATION OF THE SAME TARGET IN THE ALL-RANGE CHANNEL AND THE SETTING OF THE RANGE GATE WILL THEN INDICATE THE TARGET RANGE. THE DOPPLER SIGNALS IN BOTH CHANNELS CAN BE AURALLY MONITORED.
Inventors
- 👤 William Fishbein
- 👤 Otto E Rittenbach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:24
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/50; G01S13/58; G01S13/583; G01S13/584; G01S13/06; G01S13/08; G01S13/32; G01S13/36; G01S13/62
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |