US3267270A
Expired / Lapsed
US
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Apparatus for determining the true height of an object above the earth's surface
Assignee: Electronic Associates Inc
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Filing: 1963-01-16
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Granted: 1966-08-16
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Thomas Z Smidowicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:41
CPC Classifications
G; G01; G01S; G01S13/00; G01S13/02; G01S13/06; G01S13/46; G06; G06G; G06G7/00; G06G7/48; G06G7/78
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
105 words
AN APPARATUS FOR DETERMINING THE EARTH CURVATURE CORRECTED HEIGHT H OF A TERGET OBJECT ABOVE THE EARTH''S SURFACE AS SENSED BY A GROUND-BASED RADAR WHICH SUPPLIES THE UNCORRECTED HORIZONTAL RANGE RO AND HEIGHT Z OF THE TARGET OBJECT, ASSUMING THE RADIUS OF THE EARTH R TO BE KNOWN, COMPRISING: (A) MEANS FOR DETERMING THE VALUE OF THE ANGLE O, SINE O AND CLOSINE, O, O BEING THE ANGLE AT THE CENTER OF THE EARTH BETWEEN THE RADAR AND THE TARGET OBJECT, IN ACCORDANCE WITH THE EXPRESSION RO COSINE 0=(Z+R) SINE, 0, (B) MEANS FOR MULTIPLYING THE QUANTITY RO BY THE SINE OF THE ANGLE 0,
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-15 | 1970-02-14 | 1970-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-15 | 1974-02-14 | 1974-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-15 | 1978-02-14 | 1978-08-16 | $7700.00 | Window Closed / Lapsed |