INTERTIAL TRACKING SYSTEM WITH PROVISION FOR POSITION CORRECTION
First Claim
1. A subject location tracking process comprising:
- attaching a system to a subject, said system comprising a radiofrequency sensory integration module, an inertial tracking module and a microprocessor;
communicating radiofrequency signals from said radiofrequency sensory integration module with a remote RF transceiver beacon;
determining a measured range between said radiofrequency sensory integration module and said beacon;
computing an error value-between the measured range and a predicted range, or -between said radiofrequency signals and the predicted range, wherein positional data as to location of the system from said inertial tracking module is used to compute the predicted range; and
determining location data of the subject with a microprocessor and displaying the location.
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Accused Products
Abstract
A subject location tracking process is provided that includes the attachment of a system to a subject where the system includes a radiofrequency sensor integration module, an inertial tracking module, and a microprocessor. Radiofrequency signals are communicated from the radiofrequency sensor integration module to a remote radiofrequency transceiver beacon. A measured range is determined between the radiofrequency sensory integration module and the beacon. An error value E is then computed between the measured range and a predicted range. The predicted range is computed from the inertial tracking module alone based on positional data as to location and orientation of the system. The location data of the subject is determined with a microprocessor and displayed at the location. The present invention operates to provide a high degree of accuracy as to the position of a subject in spite of intermediate obstructions and without reliance on global position satellite systems, fixed reference signals, or line of sight.
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Citations
20 Claims
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1. A subject location tracking process comprising:
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attaching a system to a subject, said system comprising a radiofrequency sensory integration module, an inertial tracking module and a microprocessor; communicating radiofrequency signals from said radiofrequency sensory integration module with a remote RF transceiver beacon; determining a measured range between said radiofrequency sensory integration module and said beacon; computing an error value-between the measured range and a predicted range, or -between said radiofrequency signals and the predicted range, wherein positional data as to location of the system from said inertial tracking module is used to compute the predicted range; and determining location data of the subject with a microprocessor and displaying the location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A subject location tracking process comprising:
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attaching a system to a subject, said system comprising a radiofrequency sensory integration module, an inertial tracking module and a microprocessor; communicating radiofrequency signals from said radiofrequency sensory integration module with a plurality of remote RF transceiver beacons; determining a measured range between said radiofrequency sensory integration module and said plurality of beacons; determining a location based only on the measured range; computing an error value-between the measured range and a predicted range, or -between said radiofrequency signals and the predicted range, wherein positional data as to location and orientation of the system from said inertial tracking module is used to compute the predicted range; and determining location data of the subject with a microprocessor and displaying the location. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A subject location tracking process comprising:
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attaching a system to a subject, said system comprising a radiofrequency sensory integration module, an inertial tracking module and a microprocessor; communicating radiofrequency signals from said radiofrequency sensory integration module with at least one remote RF transceiver beacon; determining a measured range between said radiofrequency sensory integration module and said at least one beacon; determining a location based only on the measured range; and updating the location based on data from inertial tracking module to generate an updated location, wherein the location and the updated location are determined in spite of intermediate obstructions and without reliance on GPS, fixed reference signals, or line of sight.
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Specification