Self-Correcting Adaptive Tracking System (SATS)
First Claim
1. A system for self and group location and tracking based on ultra wide band ranging among members of the group, comprising:
- an anchored station;
a plurality of nodes, each node having at least knowledge of where the node is facing and heading, knowledge of all pair wise distances among all of the plurality of nodes, and ability to exchange information among the nodes and with the anchored station; and
one or more relays, wherein a leader node among a plurality of nodes determines placement of the one or more relays by detecting a weak signal from the anchored station and an adaptive search process finds a new position estimate of the group based on constraints of the pair wise distances, enabling extracting of directional information and adaptively stabilizing orientation of the group.
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Accused Products
Abstract
A system and method for self and group location and tracking based on ultra wide band ranging among members of the group is presented. The system comprises an anchored station, a plurality of nodes, each node having at least knowledge of where the node is facing and heading, knowledge of all pair wise distances among all of the plurality of nodes, and ability to exchange information among the nodes and with the anchored station via relays. The system and method find a new position estimate of the group in accordance with an adaptive search process based on constraints of the ultra wide band ranging, and the search process enables extracting directional information and adaptively stabilizing orientation of the group. In one embodiment, adaptively stabilizing the orientation of the group is performed using an orientation-correcting polygon matching process.
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Citations
19 Claims
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1. A system for self and group location and tracking based on ultra wide band ranging among members of the group, comprising:
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an anchored station; a plurality of nodes, each node having at least knowledge of where the node is facing and heading, knowledge of all pair wise distances among all of the plurality of nodes, and ability to exchange information among the nodes and with the anchored station; and one or more relays, wherein a leader node among a plurality of nodes determines placement of the one or more relays by detecting a weak signal from the anchored station and an adaptive search process finds a new position estimate of the group based on constraints of the pair wise distances, enabling extracting of directional information and adaptively stabilizing orientation of the group. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for self and group location and tracking based on ultra wide band ranging among members of the group, comprising steps of:
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establishing an anchored station; initializing a plurality of nodes while assigning one of the nodes as a leader node, each node having at least knowledge of where the node is facing and heading, knowledge of all pair wise distances among all of the plurality of nodes, and ability to exchange information among the nodes and with the anchored station; based on the signal strength from the anchored station, determining placement of one or more relays using the leader node; and finding a new position estimate of the group in accordance with an adaptive search process based on constraints of the ultra wide band ranging, said search process enabling extracting directional information and adaptively stabilizing orientation of the group. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A computer readable medium having computer readable program for operating on a computer for self and group location and tracking based on ultra wide band ranging among members of the group, said program comprising instructions that cause the computer to perform the steps of:
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establishing an anchored station; initializing a plurality of nodes, each node having at least knowledge of where the node is facing and heading, knowledge of all pair wise distances among all of the plurality of nodes, and ability to exchange information among the nodes and with the anchored station; based on the signal strength of the anchored station, determining placement of one or more relays using the leader node; and finding a new position estimate of the group in accordance with an adaptive search process based on constraints of the ultra wide band ranging, said search process enabling extracting directional information and adaptively stabilizing orientation of the group. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification