SYSTEM AND METHOD FOR LOCATING, TRACKING, AND/OR MONITORING THE STATUS OF PERSONNEL AND/OR ASSETS BOTH INDOORS AND OUTDOORS
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Abstract
A system and method for locating, tracking, and/or monitoring the status of personnel and/or assets (collectively “trackees”), both indoors and outdoors, is provided. Tracking data obtained from any number of sources utilizing any number of tracking methods may be provided as input to a mapping application. The mapping application generates position estimates for trackees using a suite of mapping tools to make corrections to the tracking data. The mapping application further uses information from building data, when available, to enhance position estimates. Indoor tracking methods including sensor fusion methods, map matching methods, and map building methods may be implemented compute a more accurate tracking estimate for trackees. Outdoor tracking methods may be implemented to enhance outdoor tracking data by combining tracking estimates such as inertial tracks with magnetic and/or compass data if and when available, and with GPS, if and when available.
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Citations
32 Claims
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1. (canceled)
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2. A computer-implemented method of reducing errors in inertial tracking data, the method being implemented by a computer that includes a physical processor, the method comprising:
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obtaining, as input, tracking data for a trackee, wherein the tracking data includes a collection of position estimates generated based on data obtained from inertial sensors, and Received Signal Strength Indication (RSSI) data; determining whether RSSI data associated with at least one position estimate matches one or more stored RSSI location signatures; and correcting the at least one position estimate by correlating the at least one position estimate to a given location associated with a given RSSI location signature responsive to a determination that the RSSI data associated with the at least one position estimate matches the given RSSI location signature. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A system for reducing errors in inertial tracking data, the system comprising:
a computer processor configured to; obtain, as input, tracking data for a trackee, wherein the tracking data includes a collection of position estimates generated based on data obtained from inertial sensors, and Received Signal Strength Indication (RSSI) data; determine whether RSSI data associated with at least one position estimate matches one or more stored RSSI location signatures; and correct the at least one position estimate by correlating the at least one position estimate to a given location associated with a given RSSI location signature responsive to a determination that the RSSI data associated with the at least one position estimate matches the given RSSI location signature. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A computer readable storage medium comprising executable code for reducing errors in inertial tracking data, the computer executable code, when executed by a processor, causing the processor to:
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obtain, as input, tracking data for a trackee, wherein the tracking data includes a collection of position estimates generated based on data obtained from inertial sensors, and Received Signal Strength Indication (RSSI) data; determine whether RSSI data associated with at least one position estimate matches one or more stored RSSI location signatures; and correct the at least one position estimate by correlating the at least one position estimate to a given location associated with a given RSSI location signature responsive to a determination that the RSSI data associated with the at least one position estimate matches the given RSSI location signature.
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Specification