Moving-entity detection
First Claim
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1. A computer-implemented method comprising:
- obtaining, by a transceiver, multiple radar signals, each radar signal associated with a frequency;
generating, by a processor, a representation of a space that comprises a barrier that defines an interior region and an object in the interior region, the generated representation being based on a known location and orientation of the barrier relative to the object;
determining, by the processor and using the generated representation, a modeled parameter that defines reflections by the object of a radar signal that propagates through the barrier and into the interior region and irradiates at least a portion of the barrier and at least a portion of the object;
accessing, by the processor, a parameter of a candidate detection of the object, wherein the parameter of the candidate detection is determined from the multiple radar signals received by the transceiver;
comparing, by the processor, the modeled parameter that defines the reflections by the object of the radar signal to the accessed parameter of the candidate detection; and
classifying, by the processor, the candidate detection as an actual detection or a false alarm based on the comparison.
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Abstract
A stepped-frequency radar signal is transmitted through a barrier. A transmitter of the stepped-frequency radar is on a first side of the barrier, a first object is on a second side of the barrier, and a second object that is distinct from the first object is on the second side of the barrier. A signal including a reflection of the transmitted signal from the first object and a reflection of the transmitted signal from the second object is sensed. The sensed signal is analyzed to determine that a first detection is associated with the first object and a second detection is associated with a second object.
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Citations
16 Claims
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1. A computer-implemented method comprising:
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obtaining, by a transceiver, multiple radar signals, each radar signal associated with a frequency; generating, by a processor, a representation of a space that comprises a barrier that defines an interior region and an object in the interior region, the generated representation being based on a known location and orientation of the barrier relative to the object; determining, by the processor and using the generated representation, a modeled parameter that defines reflections by the object of a radar signal that propagates through the barrier and into the interior region and irradiates at least a portion of the barrier and at least a portion of the object; accessing, by the processor, a parameter of a candidate detection of the object, wherein the parameter of the candidate detection is determined from the multiple radar signals received by the transceiver; comparing, by the processor, the modeled parameter that defines the reflections by the object of the radar signal to the accessed parameter of the candidate detection; and classifying, by the processor, the candidate detection as an actual detection or a false alarm based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device comprising:
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a transceiver configured to receive and transmit multiple radar signals, each radar signal associated with a frequency, through a barrier and into an interior region defined by the barrier; a processor coupled to an electronic storage, the electronic storage storing instructions that, when executed, cause the processor to perform operations comprising; generating a representation of a space that comprises the barrier and an object in the interior region defined by the barrier, the generated representation being based on a known location and orientation of the barrier relative to the object; determining, using the generated representation, a modeled parameter that defines reflections by the object of a radar signal that propagates through the barrier and into the interior region and irradiates at least a portion of the barrier and at least a portion of the object; accessing a parameter of a candidate detection of the object; comparing the modeled parameter that defines the reflections by the object of the radar signal to the accessed parameter of the candidate detection; and classifying the candidate detection as an actual detection or a false alarm based on the comparison. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A computer-implemented method comprising:
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transmitting, by a transmitter, a first stepped-frequency radar signal through a barrier, wherein the transmitter is on a first side of the barrier; sensing, by a receiver, a first signal comprising a reflection of the first transmitted signal from an object; analyzing, by a processor, the first sensed signal to identify a first detection of the object; transmitting, by the transmitter, a second stepped-frequency radar signal through the barrier; sensing, by the receiver, a second signal comprising a reflection of the second transmitted signal from an object located on a second side of the barrier; analyzing, by the processor, the second sensed signal to identify a second detection of the object; forming a track representative of a motion of the object through a region defined by a boundary based on the first detection and the second detection; transmitting, by the transmitter, a third stepped-frequency radar signal through the barrier; sensing, by the receiver, a third signal from the region; analyzing, by the processor, the third signal to identify a candidate detection; comparing, by the processor, a parameter of the candidate detection to a parameter of at least one of the first and second detections; determining, by the processor and based on the comparison, whether the candidate detection is a false alarm or an actual detection; and if the candidate detection is a false alarm, presenting the first and second detections without the candidate detection, and if the candidate detection is an actual detection, presenting the first and second detections with the candidate detection.
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Specification