Intrusion detection, tracking, and identification method and apparatus
OwnerGregory Hubert Piesingerinventor
Life of this patent
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Abstract
Overlapping range rings from a pair of non-scanning radar or sonar transducers creates a grid structure within a surveillance area defined by their overlapping beam widths. Using PN coded transmission signals and doppler signal processing, intruder targets are detected, located, and tracked as they move throughout the grid structure. Intruders are identified by comparing their movement pattern to those of known intruders. Three dimensional surveillance areas can be monitored using three or more transducer sites.
Claims20
A method for detecting, an intruder within a surveillance area, said method comprising:
- transmitting a first signal toward said surveillance area from a first non-scanning transducer site at a first location;
- transmitting a second signal toward said surveillance area from a second non-scanning transducer site at a second location;
- receiving, at said first non-scanning transducer site, a first reflected signal of said first signal reflected from said intruder;
- receiving, at said second non-scanning transducer site, a second reflected signal of said second signal reflected from said intruder;
- receiving, at said second non-scanning transducer site, a third reflected signal of said first signal reflected from said intruder;
- and
- determining a position of said intruder within said surveillance area in response to said first, second, and third reflected signals.
A method for detecting a position of an intruder within a three dimensional surveillance area, said method comprising:
- transmitting a first signal toward said three dimensional surveillance area from a first non-scanning transducer site at a first location;
- transmitting a second signal toward said three dimensional surveillance area from a second non-scanning transducer site at a second location;
- transmitting a third signal toward said three dimensional surveillance area from a third non-scanning transducer site at a third location;
- receiving, at said first transducer site, a first reflected signal of said first signal reflected from said intruder;
- receiving, at said second transducer site, a second reflected signal of said second signal reflected from said intruder;
- receiving, at said third transducer site, a third reflected signal of said third signal reflected from said intruder;
- receiving, at said third transducer site, a fourth reflected signal of said second signal reflected from said intruder;
- and
- determining said position of said intruder within said three dimensional surveillance area in response to said first, second, third, and fourth reflected signals.
A system for detecting a position of an intruder within a surveillance area, said system comprising:
- a first transducer site at a first location, said first transducer site transmitting a first signal within a first coverage area, and said first transducer site receiving a first reflected signal of said first signal reflected from said intruder;
- a second transducer site at a second location, said second transducer site transmitting a second signal within a second coverage area, said second coverage area partially overlapping said first coverage area to yield a common coverage area, said second transducer site receiving a second reflected signal of said second signal reflected from said intruder and a third reflected signal of said first signal reflected from said intruder;
- and
- a processor in communication with said first and second transducer sites for receiving said first, second, and third reflected signals and determining said position of said intruder in said common coverage area in response to said first, second, and third reflected signals.
Dependencies are inferred from the claim text.