US4586046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic reprogramming means for countermeasures system
Assignee: United States Department of the Air Force
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Filing: 1973-06-13
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Granted: 1986-04-29
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Expires: 1993-06-13
Abstract
Abstract A countermeasures system technique for destroying threat radar frame of reference. Automatic change of false target pattern is accomplished by any one of three different switching schemes or by any combination of them. The switching schemes comprehend (a) changing polarity of digital counts delivered to system range position program matrix inputs; (b) alternately enabling and disabling selected outputs of the range position program matrix, and (c) interchanging selected input gates of the system angle position program matrix.
Inventors
- 👤 Robert D. Pringle
- 👤 William A. O'Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:08
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/38
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
In an electronic countermeasures system having; a false target range position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock in phase lock with received threat radar PRF, for delivering discrete digital counts to each said range position matrix input; a false target angle position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock locked in phase and frequency to the scan rate of received threat radar signals, for gating each said angle position program matrix input; and, means for detecting and indicating system receiver lock up information: automatic reprogramming means comprising; switching means for alternately changing the polarity of the digital counts delivered to selected inputs of said range position program matrix, said switching means being actuated by command signals responsive to system receiver lock up information.
Claim 2
Dependent Claim
136 words
In an electronic countermeasures system having; a false target range position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock in phase lock with received threat radar PRF, for delivering discrete digital counts to each said range position matrix input; a false target angle position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock locked in phase and frequency to the scan rate of received threat radar signals, for gating each said angle position program matrix input; and, means for detecting and indicating system receiver lock up information: automatic reprogramming means comprising; switching means for alternately changing the polarity of the digital counts delivered to selected inputs of said range position program matrix, said switching means being actuated by command signals responsive to system receiver lock up information.
Claim 3
Dependent Claim
23 words
Automatic reprogramming means as defined in claim 1 including switching means for alternately enabling and disabling selected outputs of said range program matrix.
Claim 4
Dependent Claim
22 words
Automatic reprogramming means as defined in claim 2 including switching means for interchanging selected gating means of said angle position program matrix.
Claim 5
Dependent Claim
22 words
Automatic reprogramming means as defined in claim 1 including switching means for interchanging selected gating means of said angle position program matrix.
Claim 6
Dependent Claim
130 words
In an electronic countermeasures system having; a false targer range position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock in phase lock with received threat radar PRF, for delivering discrete digital counts to each said range position matrix input; a false target angle position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock locked in phase and frequency to the scan rate of received threat radar signals, for gating each said angle position program matrix input; and, means for detecting and indicating system receiver lock up information: automatic reprogramming means comprising; switching means for alternately enabling and disabling selected outputs of said range position program matrix, said switching means being actuated by command signals responsive to system receiver lock up information.
Claim 7
Dependent Claim
130 words
In an electronic countermeasures system having; a false targer range position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock in phase lock with received threat radar PRF, for delivering discrete digital counts to each said range position matrix input; a false target angle position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock locked in phase and frequency to the scan rate of received threat radar signals, for gating each said angle position program matrix input; and, means for detecting and indicating system receiver lock up information: automatic reprogramming means comprising; switching means for alternately enabling and disabling selected outputs of said range position program matrix, said switching means being actuated by command signals responsive to system receiver lock up information.
Claim 8
Dependent Claim
22 words
Automatic reprogramming means as defined in claim 2 including switching means for interchanging selected gating means of said angle position program matrix.
Claim 9
Dependent Claim
128 words
In an electronics countermeasures system having; a false target range position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock in phase lock with received threat radar PRF, for delivering discrete digital counts to each said range position matrix input; a false target angle position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock locked in phase and frequency to the scan rate of received threat radar signals, for gating each said angle position program matrix input; and, means for detecting and indicating system receiver lock up information: automatic reprogramming means comprising; switching means for interchanging selected gating means of said angle position program matrix, said switching means being actuated by command signals responsive to system receiver lock up information.
Claim 10
Dependent Claim
128 words
In an electronics countermeasures system having; a false target range position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock in phase lock with received threat radar PRF, for delivering discrete digital counts to each said range position matrix input; a false target angle position program matrix with multiple inputs and outputs; means, responsive to an oscillator clock locked in phase and frequency to the scan rate of received threat radar signals, for gating each said angle position program matrix input; and, means for detecting and indicating system receiver lock up information: automatic reprogramming means comprising; switching means for interchanging selected gating means of said angle position program matrix, said switching means being actuated by command signals responsive to system receiver lock up information.
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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |