System and method for intrusion detection using a time domain radar array
First Claim
1. A sensor array comprising:
- a plurality of ultra wideband (UWB) sensors, said plurality of UWB sensors arranged in a sparse array, a first UWB sensor of said plurality of UWB sensors being configured to transmit first UWB signals, a second UWB sensor of said plurality of UWB sensors being configured to receive first signal returns of said transmitted first UWB signals reflecting off an object, said first signal returns corresponding to first forward scattering data; and
a processor in communication with at least one of said plurality of UWB sensors, wherein said processor determines at least one characteristic of said object based on said first forward scattering data and uses said at least one characteristic and at least one established criteria to determine an alert condition.
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Accused Products
Abstract
A system and method for highly selective intrusion detection using a sparse array of ultra wideband (UWB) radars. Two or more UWB radars are arranged in a sparse array around an area to be protected. Each UWB radar transmits ultra wideband pulses that illuminate the area to be protected. Signal return data is processed to determine, among other things, whether an alarm condition has been triggered. High resolution radar images are formed that give an accurate picture of the area to be protected. This image is used to detect motion in a highly selective manner and to track moving objects within the protected area. Motion can be distinguished based on criteria appropriate to the environment in which the intrusion detection system operates.
85 Citations
20 Claims
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1. A sensor array comprising:
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a plurality of ultra wideband (UWB) sensors, said plurality of UWB sensors arranged in a sparse array, a first UWB sensor of said plurality of UWB sensors being configured to transmit first UWB signals, a second UWB sensor of said plurality of UWB sensors being configured to receive first signal returns of said transmitted first UWB signals reflecting off an object, said first signal returns corresponding to first forward scattering data; and a processor in communication with at least one of said plurality of UWB sensors, wherein said processor determines at least one characteristic of said object based on said first forward scattering data and uses said at least one characteristic and at least one established criteria to determine an alert condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for sensing, said method comprising the steps of:
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transmitting, from a first ultra wideband (UWB) sensor of a plurality of UWB sensors, first UWB signals, said plurality of UWB sensors arranged in a sparse array, receiving, at a second UWB sensor of said plurality of UWB sensors, first signal returns of said transmitted first UWB signals reflecting off an object, said first signal returns corresponding to first forward scattering data; determining at least one characteristic of said object based on said first forward scattering data; and using said at least one characteristic and at least one established criteria to determine an alert condition. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A sensor array comprising:
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a plurality of ultra wideband (UWB) sensors, said plurality of UWB sensors arranged in a sparse array, at least two UWB sensors of said plurality of UWB sensors being configured to provide bistatic radar functionality, at least one UWB sensor of said at least two UWB sensors being configured to receive signal returns of transmitted first UWB signals reflecting off an object, said signal returns corresponding to forward scattering data; and a processor that determines at least one characteristic of said object based on said forward scattering data and uses said at least one characteristic and at least one established criteria to determine an alert condition.
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Specification