Patent US3045703A successfully refreshed from Google Patents.
Patent US3291884A successfully refreshed from Google Patents.
US3291884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar simulator
Assignee: General Precision Inc
•
Filing: 1964-05-07
•
Granted: 1966-12-13
•
Expires: 1984-05-07
Abstract
No abstract record available.
Inventors
- 👤 Edward E Gray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:11
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4004; G01S7/4021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A RADAR SIMULATOR COMPRISING, A REPRESENTATION OF RADAR TERRAIN REFLECTANCE DATA; A REPRESENTATION OF RADAR TERRAIN ELEVATIONAL DATA; EACH OF SAID REPRESENTATIONS BEING ENCODED AS DISCRETE GRAY SCALE VARIATIONS UPON A PHOTOGRAPHIC TRANSPARENCY; MEANS FOR SIMULTANEOUSLY SCANNING CORRESPONDING REGIONS OF EACH OF SAID REPRESENTATIONS TO DERIVE FIRST AND SECOND ELECTRICAL SIGNALS THEREFROM INDICATIVE OF THE TERRAIN REFLECTANCE AND TERRAIN ELEVATION, RESPECTIVELY; FIRST CIRCUIT MEANS RESPONSIVE TO SAID FIRST ELECTRICAL SIGNAL OPERABLE TO GENERATE A THIRD ELECTRICAL SIGNAL REPRESENTATIVE OF BUILDING HEIGHTS WHEN SAID FIRST ELECTRICAL SIGNAL EXCEEDS A PREDETERMINED THRESHOLD; SUMMING MEANS COMBINING SAID SECOND AND THIRD ELECTRICAL SIGNALS TO PROVIDE A FOURTH ELECTRICAL SIGNAL REPRESENTATIVE OF THE TERRAIN ELEVATION COMBINED WITH THE BUILDING HEINGTS; AND SECOND CIRCUIT MEANS RESPONSIVE TO SAID FOURTH ELECTRICAL SIGNAL OPERABLE TO BREAK UP SAID FIRST ELECTRICAL SIGNAL TO SIMULATE LEADING EDGES AND SHADOWS OF BUILDINGS.
Claim 2
Dependent Claim
141 words
A RADAR SIMULATOR COMPRISING, A REPRESENTATION OF RADAR TERRAIN REFLECTANCE DATA; A REPRESENTATION OF RADAR TERRAIN ELEVATIONAL DATA; EACH OF SAID REPRESENTATIONS BEING ENCODED AS DISCRETE GRAY SCALE VARIATIONS UPON A PHOTOGRAPHIC TRANSPARENCY; MEANS FOR SIMULTANEOUSLY SCANNING CORRESPONDING REGIONS OF EACH OF SAID REPRESENTATIONS TO DERIVE FIRST AND SECOND ELECTRICAL SIGNALS THEREFROM INDICATIVE OF THE TERRAIN REFLECTANCE AND TERRAIN ELEVATION, RESPECTIVELY; FIRST CIRCUIT MEANS RESPONSIVE TO SAID FIRST ELECTRICAL SIGNAL OPERABLE TO GENERATE A THIRD ELECTRICAL SIGNAL REPRESENTATIVE OF BUILDING HEIGHTS WHEN SAID FIRST ELECTRICAL SIGNAL EXCEEDS A PREDETERMINED THRESHOLD; SUMMING MEANS COMBINING SAID SECOND AND THIRD ELECTRICAL SIGNALS TO PROVIDE A FOURTH ELECTRICAL SIGNAL REPRESENTATIVE OF THE TERRAIN ELEVATION COMBINED WITH THE BUILDING HEINGTS; AND SECOND CIRCUIT MEANS RESPONSIVE TO SAID FOURTH ELECTRICAL SIGNAL OPERABLE TO BREAK UP SAID FIRST ELECTRICAL SIGNAL TO SIMULATE LEADING EDGES AND SHADOWS OF BUILDINGS.
References Cited (Backward Citations)
GB805293A
Cited
US3028684A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |