Detection of concealed object on a body using radio frequency signatures on frequencies and polarizations
First Claim
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1. A method for detecting a concealed object in a target comprising a body and the concealed object, the method comprising:
- emitting, by an emitter, radio frequency (RF) energy having a first linear polarization, toward a direction of the target;
receiving, by a receiver, a scattered RF energy reflected from the target;
generating, by the receiver, a first signal corresponding to a first component of the received scattered RF energy, the first component having a second linear polarization;
generating, by the receiver, a second signal corresponding to a second component of the received scattered RF energy, the second component having a third linear polarization, orthogonal to the second linear polarization;
comparing, by a processor, each of the first signal and the second signal with a plurality of stored RF scattering signatures, each of the RF scattering signatures being associated with an object of interest; and
detecting, by the processor, the concealed object when at least one of the first signal and the second signal matches one of a plurality of stored RF scattering signatures based on a pairing of;
a frequency response; and
a transmit-receive polarization combination.
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Abstract
A method for detecting a concealed object in a target. The target may include a body and the concealed object. The method may include emitting radio frequency (RF) energy toward a direction of the target, receiving a scattered RF energy reflected from the target, generating a signal corresponding to the received scattered RF energy, comparing the signal with a plurality of stored RF scattering signatures, and detecting the concealed object when the signal matches one of a plurality of RF scattering signatures. Each of the RF scattering signatures may be associated with an object of interest.
34 Citations
17 Claims
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1. A method for detecting a concealed object in a target comprising a body and the concealed object, the method comprising:
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emitting, by an emitter, radio frequency (RF) energy having a first linear polarization, toward a direction of the target; receiving, by a receiver, a scattered RF energy reflected from the target; generating, by the receiver, a first signal corresponding to a first component of the received scattered RF energy, the first component having a second linear polarization; generating, by the receiver, a second signal corresponding to a second component of the received scattered RF energy, the second component having a third linear polarization, orthogonal to the second linear polarization; comparing, by a processor, each of the first signal and the second signal with a plurality of stored RF scattering signatures, each of the RF scattering signatures being associated with an object of interest; and detecting, by the processor, the concealed object when at least one of the first signal and the second signal matches one of a plurality of stored RF scattering signatures based on a pairing of; a frequency response; and a transmit-receive polarization combination. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A radar detector configured to detect a concealed object in a target comprising a body and the concealed object, the radar detector comprising:
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an emitter configured to emit RF energy toward a direction of the target; a receiver configured to receive a scattered RF energy reflected from the target, and to generate; a first signal corresponding to a first component of the scattered RF energy reflected from the target, the first component having a second linear polarization; and a second signal corresponding to a second component of the scattered RF energy reflected from the target, the second component having a third linear polarization, orthogonal to the second linear polarization; and a processor configured; to retrieve a plurality of stored RF scattering signatures from a stored data record; to compare each of the first signal and the second signal with the plurality of stored RF scattering signatures, each of the stored RF scattering signatures being associated with an object of interest; and to detect the concealed object when at least one of the first signal and the second signal matches one of a plurality of stored RF scattering signatures based on a pairing of; a frequency response; and a transmit-receive polarization combination. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification