US3769442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compressed data base for radar land mass simulator
Assignee: General Electric Co
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Filing: 1972-08-03
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Granted: 1973-10-30
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Expires: 1992-08-03
Abstract
Abstract A process for producing a compressed data base for a radar land mass simulator which is descriptive of a selected land mass. Topographic maps or other data sources are used to determine prominent cultural features and terrain features such as ridge and valley lines. These features are identified by a string of contiguous straight line segments. The end points of each line segment can be identified in terms of their x, y, and z coordinates relative to a chosen origin. Here, however, only the first point in a string is identified in the terms of full x, y, and 2 coordinates, with each subsequent point identified in terms of the increment ( Delta x, Delta y, and Delta z) from the preceding point.
Inventors
- 👤 R Heartz
- 👤 D Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:30
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4052; G01S7/4082; G09; G09B; G09B9/00; G09B9/02; G09B9/08; G09B9/40
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
96 words
A process for producing a compressed data base for a radar land mass simulator, descriptive of a selected land mass relative to a chosen origin comprising: identifying land mass features desired to be displayed by a string of contiguous straight line segments in terms of the end points of the segments; selecting a start point for each string of contiguous straight line segments; recording the x, y, and z coordinates of each start point relative to the origin; and recording the Delta x, Delta y, and Delta z of each subsequent point from the preceding point.
Claim 2
Dependent Claim
96 words
A process for producing a compressed data base for a radar land mass simulator, descriptive of a selected land mass relative to a chosen origin comprising: identifying land mass features desired to be displayed by a string of contiguous straight line segments in terms of the end points of the segments; selecting a start point for each string of contiguous straight line segments; recording the x, y, and z coordinates of each start point relative to the origin; and recording the Delta x, Delta y, and Delta z of each subsequent point from the preceding point.
Claim 3
Dependent Claim
42 words
A process in accordance with claim 1 further including: recording with the Delta x, Delta y, and Delta z of each subsequent point the radar reflectivity codes to the right and left of the line connecting the point to the preceding point.
Claim 4
Dependent Claim
31 words
A process in accordance with claim 1 further including: recording the Delta x, Delta y, and Delta z of discrete radar targets as points in said strings of contiguous line segments.
Claim 5
Dependent Claim
28 words
A process in accordance with claim 3 further including: recording with the Delta x, Delta y, and Delta z of each discrete radar target its size and intensity.
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) | 1976-10-29 | 1977-04-30 | 1977-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-29 | 1981-04-30 | 1981-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-29 | 1985-04-30 | 1985-10-30 | $7700.00 | Window Closed / Lapsed |