Patent US3927649A successfully refreshed from Google Patents.
US3242490A
Expired / Lapsed
US
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Apparatus for and a method of determining the position of electromagnetic noise source
Assignee: Bendix Corp
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Filing: 1963-11-12
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Granted: 1966-03-22
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Expires: 1983-11-12
Abstract
No abstract record available.
Inventors
- 👤 Basil W Wentworth
- 👤 Edwin L Ellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:07
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02; G01S5/00; G01S5/02; G01S5/0246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A METHOD OF DETERMINING THE RANGE OF A SOURCE OF ELECTROMAGNETIC RADIATION RELATIVE TO A RECEIVER WHEN SAID SOURCE AND RECEIVER ARE MOVING RELATIVE TO EACH OTHER, COMPRISING THE STEPS OF: (A) RECEIVING THE TRANSMISSIONS FROM SAID SOURCE VIA A DIRECT PATH AND A REFLECTIVE PATH, (B) CORRELATING THE DIRECTLY RECEIVED SIGNAL AND THE REFLECTIVELY RECEIVED SIGNAL TO OBTAIN THE TIME DIFFERENCE OF ARRIVAL OF SAID SIGNALS $ AT SAID RECEIVER AND TO OBTAIN THE DOPPLER FREQUENCY DIFFERENCE FD OF SAID SIGNAL, COMPUTING FD THE TIME RATE OF CHANGE OF FD, (C) OBTAINING THE ALTITUDE AND SPEED OF THE RECEIVER, AND (D) COMPUTING THE RANGE R1, OF THE SOURCE FROM THE RECEIVER FROM THE FOLLOWING EQUATIONS:
Claim 2
Independent Claim
116 words
A METHOD OF DETERMINING THE RANGE OF A SOURCE OF ELECTROMAGNETIC RADIATION RELATIVE TO A RECEIVER WHEN SAID SOURCE AND RECEIVER ARE MOVING RELATIVE TO EACH OTHER, COMPRISING THE STEPS OF: (A) RECEIVING THE TRANSMISSIONS FROM SAID SOURCE VIA A DIRECT PATH AND A REFLECTIVE PATH, (B) CORRELATING THE DIRECTLY RECEIVED SIGNAL AND THE REFLECTIVELY RECEIVED SIGNAL TO OBTAIN THE TIME DIFFERENCE OF ARRIVAL OF SAID SIGNALS $ AT SAID RECEIVER AND TO OBTAIN THE DOPPLER FREQUENCY DIFFERENCE FD OF SAID SIGNAL, COMPUTING FD THE TIME RATE OF CHANGE OF FD, (C) OBTAINING THE ALTITUDE AND SPEED OF THE RECEIVER, AND (D) COMPUTING THE RANGE R1, OF THE SOURCE FROM THE RECEIVER FROM THE FOLLOWING EQUATIONS:
References Cited (Backward Citations)
US3171126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |