Local area positioning system
First Claim
1. A positioning system, comprising:
- a command signal generator structured to transmit a command signal;
a subject module structured to receive the command signal and emit a subject signal responsive thereto;
a plurality of sensor modules arrayed in a defined three-dimensional space and structured to detect the subject signal;
a plurality of counters corresponding to the plurality of sensors, each of said counters configured to count an increment relating to reception of the subject signal by the corresponding sensor module;
a comparator configured to compare the plurality of increments and generate a plurality of counter differential values; and
a correlator configured to correlate the plurality of counter differential values to determine a subject location in the defined space.
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Accused Products
Abstract
A positioning system includes a command signal generator, a subject module, a plurality of sensor modules, and a plurality of counters. A comparator compares the plurality of increments and generate a plurality of counter differential values; and a correlator correlates the plurality of counter differential values to determine a subject location in the defined space.
A method for locating a subject includes transmitting a signal to a subject unit; transmitting a signal to slave units located within the defined three-dimensional space, such that each slave unit starts a 1 GHz counter; transmitting a subject signal from the subject unit; stopping said counters; determining net counter values; comparing the net counter values to determine counter difference values; and correlating said counter difference values to determine a subject unit location in the three-dimensional space.
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Citations
15 Claims
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1. A positioning system, comprising:
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a command signal generator structured to transmit a command signal; a subject module structured to receive the command signal and emit a subject signal responsive thereto; a plurality of sensor modules arrayed in a defined three-dimensional space and structured to detect the subject signal; a plurality of counters corresponding to the plurality of sensors, each of said counters configured to count an increment relating to reception of the subject signal by the corresponding sensor module; a comparator configured to compare the plurality of increments and generate a plurality of counter differential values; and a correlator configured to correlate the plurality of counter differential values to determine a subject location in the defined space. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for locating a subject, comprising:
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transmitting a signal to a subject unit located within a defined three-dimensional space; transmitting a signal to slave units located within the defined three-dimensional space, each slave unit configured to start a 1 GHz counter from a counter start value; transmitting a subject signal from the subject unit located within a defined three-dimensional space; stopping said counters of said slave units to define counter stop values; determining net counter values for each slave unit; comparing the net counter values to determine counter difference values; and correlating said counter difference values to determine a subject unit location in the three-dimensional space. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Specification