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US3364485A
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Radiometric altitude measuring apparatus
Assignee: General Precision Systems Inc
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Filing: 1966-11-01
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Granted: 1968-01-16
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Expires: 1986-11-01
Abstract
No abstract record available.
Inventors
- 👤 David M Chiarello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:38
CPC Classifications
G; G01; G01S; G01S11/00; G01S11/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A METHOD OF DETERMINING THE ALTITUDE OF A CRAFT ABOVE THE SURFACE OF EARTH COMPRISING THE STEPS OF DETECTING THE RADIATION EMITTED FROM A FIRST PREDETERMINED AREA ON THE EARTH BY A FIRST DIRECTIONAL ANTENNA ON SAID CRAFT AND DETECTING THE RADIATION EMITTED FROM A SECOND PREDETERMINED AREA ON THE EARTH AND INCLUDING AS A PART THEREOF A PORTION OF THE FIRST PREDETERMINED AREA BY A SECOND DIRECTIONAL ANTENNA ON SAID CRAFT HORIZONTALLY SPACED FROM SAID FIRST ANTENNA, CORRELATING THE RADIATION PATTERNS RECEIVED BY RESPECTIVE ANTENNAS TO DETERMINE THE EXTENT OF OVERLAP OF SAID AREAS AND CALCULATING THE ALTITUDE OF SAID CRAFT ABOVE THE EARTH AS A FUNCTION OF SAID OVERLAPPING AREA.
Claim 2
Independent Claim
112 words
A METHOD OF DETERMINING THE ALTITUDE OF A CRAFT ABOVE THE SURFACE OF EARTH COMPRISING THE STEPS OF DETECTING THE RADIATION EMITTED FROM A FIRST PREDETERMINED AREA ON THE EARTH BY A FIRST DIRECTIONAL ANTENNA ON SAID CRAFT AND DETECTING THE RADIATION EMITTED FROM A SECOND PREDETERMINED AREA ON THE EARTH AND INCLUDING AS A PART THEREOF A PORTION OF THE FIRST PREDETERMINED AREA BY A SECOND DIRECTIONAL ANTENNA ON SAID CRAFT HORIZONTALLY SPACED FROM SAID FIRST ANTENNA, CORRELATING THE RADIATION PATTERNS RECEIVED BY RESPECTIVE ANTENNAS TO DETERMINE THE EXTENT OF OVERLAP OF SAID AREAS AND CALCULATING THE ALTITUDE OF SAID CRAFT ABOVE THE EARTH AS A FUNCTION OF SAID OVERLAPPING AREA.
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) | 1971-01-15 | 1971-07-17 | 1972-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-15 | 1975-07-17 | 1976-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-15 | 1979-07-17 | 1980-01-16 | $7700.00 | Window Closed / Lapsed |