US3894347A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three dimensional chaff simulation system
Assignee: Whittaker Corp
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Filing: 1965-10-24
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Granted: 1975-07-15
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Expires: 1985-10-24
Abstract
Abstract A simulated radar system in which changing conditions of simulated chaff may be viewed on the cathode ray screens of a plan position indicator and range height indicator to effectively observe such changing conditions in three dimensions for study and training purposes.
Inventors
- 👤 Marvin O Sleven
- 👤 Daniel Hobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:02
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/40; G01S7/4052; G01S7/4082
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
146 words
In a chaff simulating system, a position generator including means for developing electrical values representative respectively of chaff range, chaff bearing and chaff elevation; means for converting each of said values into a corresponding coded digital representation; a memory system in which a digital representation of each of said values is stored; a plan position indicating system; a range-height radar indicating system; means for producing electrical magnitudes representative of the instantaneous position of a radar beam in said plan position indicating system and the bearing and elevation movements of an antenna in said range-height radar indicating system; encoder means for converting said digital representations to electrical values; and means comparing the last-mentioned electrical values with said magnitudes to obtain a comparison of said values with said magnitudes for altering indications in said plan position indicating system and said range-height indicating system in accordance with said comparison.
Claim 2
Dependent Claim
146 words
In a chaff simulating system, a position generator including means for developing electrical values representative respectively of chaff range, chaff bearing and chaff elevation; means for converting each of said values into a corresponding coded digital representation; a memory system in which a digital representation of each of said values is stored; a plan position indicating system; a range-height radar indicating system; means for producing electrical magnitudes representative of the instantaneous position of a radar beam in said plan position indicating system and the bearing and elevation movements of an antenna in said range-height radar indicating system; encoder means for converting said digital representations to electrical values; and means comparing the last-mentioned electrical values with said magnitudes to obtain a comparison of said values with said magnitudes for altering indications in said plan position indicating system and said range-height indicating system in accordance with said comparison.
Claim 3
Dependent Claim
75 words
A system as set forth in claim 1 including means for developing an age term and means for developing a density term each in a coded digital representation and storing the same in said memory system together with said corresponding digital representation of the same chaff bundle; encoder means for converting said digital representations of density and age to electrical values which cause said indications to change in accordance with said densities and age values.
Claim 4
Independent Claim
65 words
The method of simulating chaff in a radar system including the steps of developing digital information as to the range, height and bearing of simulated chaff; storing said information in a memory system; developing electrical values representative of radar antenna movements, encoding said digital information and making a comparison of the encoded information with said values, and producing visual indications in accordance with said comparisons.
Claim 5
Independent Claim
65 words
The method of simulating chaff in a radar system including the steps of developing digital information as to the range, height and bearing of simulated chaff; storing said information in a memory system; developing electrical values representative of radar antenna movements, encoding said digital information and making a comparison of the encoded information with said values, and producing visual indications in accordance with said comparisons.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |