Anti-personnel airborne radar application
First Claim
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1. An anti-personnel airborne radar application for target tracking comprising:
- a rotorcraft; and
a signal processing system, wherein said signal processing system comprises;
a radar antenna supported by said rotorcraft, said radar antenna comprising a plurality of subapertures during reception of reflected radar signals, each of said subapertures receiving respective reflected radar signals impinging thereon;
a plurality of conditioning circuits, each of said conditioning circuits receiving signals from a respective one of said subapertures, said signals to be conditioned being a function of at least the reflected radar signals impinging on the respective subaperture;
an adaptive signal processor that processes conditioned signals received from said plurality of conditioning circuits and outputs a signal representing detection of an ultra slow moving target; and
an ultra slow moving target indicator for indicating detection of an ultra slow moving target in response to receipt from said adaptive signal processor of said signal representing said decision.
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Abstract
An anti-personnel airborne radar application for ultra slow target tracking is provided. The anti-personnel airborne radar application includes a rotorcraft and a signal processing system. The signal processing system includes a radar antenna supported by said rotorcraft, a plurality of phase centers, a conditioning circuit for each phase center, an adaptive signal processor, and an ultra slow target indicator. Each phase center is for receiving reflected radar signals received by the radar antenna. The adaptive signal processor processes the received condition signal from each of the phase centers, allowing the ultra slow target indicator to render tracking reports. A method of detecting human motion over a ground swath is also provided.
55 Citations
20 Claims
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1. An anti-personnel airborne radar application for target tracking comprising:
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a rotorcraft; and a signal processing system, wherein said signal processing system comprises; a radar antenna supported by said rotorcraft, said radar antenna comprising a plurality of subapertures during reception of reflected radar signals, each of said subapertures receiving respective reflected radar signals impinging thereon; a plurality of conditioning circuits, each of said conditioning circuits receiving signals from a respective one of said subapertures, said signals to be conditioned being a function of at least the reflected radar signals impinging on the respective subaperture; an adaptive signal processor that processes conditioned signals received from said plurality of conditioning circuits and outputs a signal representing detection of an ultra slow moving target; and an ultra slow moving target indicator for indicating detection of an ultra slow moving target in response to receipt from said adaptive signal processor of said signal representing said decision. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of detecting motion of one or more targets over a ground swath comprising the following steps:
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providing an anti-personnel airborne radar application that is capable of detecting a target moving at a velocity less than 3 meters per second; determining a ground swath for surveillance, the ground swath having a cross range dimension and a down range dimension; traversing the cross range dimension of the ground swath; and scanning across the down range dimension while traversing the ground swath in the cross range dimension, wherein the anti-personnel airborne radar application produces a report in response to detection of a target moving at a velocity less than 3 meters per second. - View Dependent Claims (19)
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20. An anti-personnel airborne radar application for target tracking comprising:
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a rotorcraft having sustainable altitude capabilities at 22,000 feet and a forward velocity not exceeding 100 knots; and a signal processing system, wherein said signal processing system comprises; a radar antenna supported by said rotorcraft, said radar antenna comprising a plurality of subapertures during reception of reflected radar signals, each of said subapertures receiving respective reflected radar signals impinging thereon; a plurality of conditioning circuits, each of said conditioning circuits receiving signals from a respective one of said subapertures, said signals to be conditioned being a function of at least the reflected radar signals impinging on the respective subaperture; an adaptive signal processor that processes conditioned signals received from said plurality of conditioning circuits and outputs a signal representing detection of an ultra slow moving target; and an ultra slow moving target indicator for indicating detection of an ultra slow moving target in response to receipt from said adaptive signal processor of said signal representing said decision, wherein said signal processing system has a minimum detectable velocity of 0.5 meter per second.
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Specification
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Current AssigneeThe Boeing Co.
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Original AssigneeThe Boeing Co.
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InventorsSego, Daniel J.
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Primary Examiner(s)Gregory, Bernarr E.
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Application NumberUS11/162,474Time in Patent Office470 DaysField of Search342 25 R- 25 F, 342/27, 342/28, 342/89, 342/90, 342/118, 342128-145, 342159-164, 342/175, 342189-197, 342/100, 367/87, 367/93, 367/94US Class Current342/161CPC Class CodesG01S 13/48 using multiple beams at emi...G01S 13/5242 with means for platform mot...
