System and method for security inspection using microwave imaging
First Claim
1. A security inspection system, comprising:
- a portal through which a human subject is capable of walking;
a scanning panel including an array of antenna elements, each of said antenna elements being programmable with a respective phase delay to direct a beam of microwave illumination toward a target on the human subject, said antenna elements being further capable of receiving reflected microwave illumination reflected from the target; and
a processor operable to measure an intensity of the reflected microwave illumination to determine a value of a pixel within an image of the human subject constructed by said processor.
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Accused Products
Abstract
A security inspection system uses microwave radiation to image targets on a human subject or other item. The system includes an array of antenna elements that are programmable with a respective phase delay to direct a beam of microwave illumination toward a target on the human subject or item. The antenna elements are further capable of receiving reflected microwave illumination reflected from the target. A processor is operable to measure an intensity of the reflected microwave illumination to determine a value of a pixel within an image of the human subject or item. Multiple beams can be directed towards the human subject or item to obtain corresponding pixel values for use by the processor in constructing the image.
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Citations
33 Claims
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1. A security inspection system, comprising:
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a portal through which a human subject is capable of walking; a scanning panel including an array of antenna elements, each of said antenna elements being programmable with a respective phase delay to direct a beam of microwave illumination toward a target on the human subject, said antenna elements being further capable of receiving reflected microwave illumination reflected from the target; and a processor operable to measure an intensity of the reflected microwave illumination to determine a value of a pixel within an image of the human subject constructed by said processor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A microwave imaging system, comprising:
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a microwave source for providing microwave illumination; a reflector antenna array including a plurality of antenna elements, each of said antenna elements being programmable with a respective phase delay to reflect the microwave illumination towards a position on a target, said antenna elements being further capable of receiving reflected microwave illumination reflected from the position on the target; and a processor operable to measure an intensity of the reflected microwave illumination to determine a value of a pixel within an image of the target constructed by said processor. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for security inspection, comprising:
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providing a reflector antenna array including a plurality of antenna elements, each of said antenna elements being programmable with a respective phase delay; receiving microwave illumination at the reflector antenna array from a microwave source; reflecting the microwave illumination towards a position on a target based on the phase delay of each of the antenna elements; receiving reflected microwave illumination reflected from the position on the target at the reflector antenna array; measuring an intensity of the reflected microwave illumination to determine a pixel; and constructing an image including multiple pixel values associated with multiple positions on the target. - View Dependent Claims (31, 32, 33)
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Specification