US4010467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Missile post-multiple-target resolution guidance
Assignee: United States Department of the Navy
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Filing: 1972-03-02
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Granted: 1977-03-01
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Expires: 1992-03-02
Abstract
Abstract A feedback loop for use in the guidance system of a guided missile being wn against multiple targets. The feedback loop modifies a transient signal present in the system by introducing a time lag sufficient to cause the missile relative heading change command signal subsequent to target resolution to be equal to the change in the missile antenna-to-target pointing vector that occurs at resolution.
Inventors
- 👤 Lawrence P. Slivka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:59
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2246; F41G7/2273; F41G7/2286; G; G01; G01S; G01S13/00; G01S13/66
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
In an infrared tracking loop for use in the guidance system of a guided missile against multiple targets, the combination comprising: a. an input terminal adapted to receive signals proportional to heading of the guided missile with respect to a reference plane, b. a tracking antenna means for generating output signals proportional to the pointing direction of said antenna with respect to said reference plane, c. a summing circuit coupled to said input terminal and to said tracking antenna for providing an output tracking error signal, d. signal processing circuit means coupled to said summing circuit means for generating an output steering signal, e. time lag circuit means coupled between the output of said signal processing means and said tracking antenna means and being responsive to a step change in the output signal from said antenna tracking means to provide a feedback signal to cause said steering signal to be equal to said step change.
Claim 2
Dependent Claim
155 words
In an infrared tracking loop for use in the guidance system of a guided missile against multiple targets, the combination comprising: a. an input terminal adapted to receive signals proportional to heading of the guided missile with respect to a reference plane, b. a tracking antenna means for generating output signals proportional to the pointing direction of said antenna with respect to said reference plane, c. a summing circuit coupled to said input terminal and to said tracking antenna for providing an output tracking error signal, d. signal processing circuit means coupled to said summing circuit means for generating an output steering signal, e. time lag circuit means coupled between the output of said signal processing means and said tracking antenna means and being responsive to a step change in the output signal from said antenna tracking means to provide a feedback signal to cause said steering signal to be equal to said step change.
Claim 3
Dependent Claim
29 words
The improved tracking loop of claim 1 wherein the time lag of said time lag circuit is of a value to provide an underdamped response in the tracking loop.
Claim 4
Dependent Claim
28 words
The improved tracking loop of claim 2 wherein said time lag circuit provides a time lag approximately equal to the reciprocal of the gain of the tracking loop.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |