Transmitter location for ultra-wideband, transmitted-reference CDMA communication system
AssigneeGeneral Electric Company
InventorsRalph Thomas Hoctor, John Erik Hershey, Nick Andrew Van Stralen, Harold Woodruff Tomlinson JR.
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Abstract
A system and method involve determining the location of objects within an area of interest using wireless signals. The system includes at least three base stations communicating with a central processor and a plurality of mobile devices. Further, at least one fixed beacon transmitter of known location may be provided. The mobile devices transmit a wireless signal to the base stations, which then determine a location of the mobile devices based on time difference of arrival information between the mobile devices measured at all the base stations.
Claims23
A method for determining a location of an object within an area of interest, comprising:
- transmitting wireless signals from a plurality of objects to at least three receivers;
- calculating, at each of the at least three receivers, time difference of arrival information based on the wireless signals;
- and
- determining a location of at least one of the objects within said area of interest based on said time difference of arrival information.
A system for determining a location of an object within an area of interest, comprising:
- a mobile device carried by each of a plurality of objects, said mobile device including a transmitter for transmitting a wireless signal;
- at least three base stations within said area of interest, each of said at least three base stations comprising a detector for detecting the wireless signals transmitted from a plurality of said mobile devices, and further comprising a processor for deriving time difference of arrival information based on the wireless signals;
- and
- a controller for determining the location of at least one of the objects within said area of interest based on the time difference of arrival information calculated by each of the three base stations.
A method for determining a location of an object within an area of interest, comprising:
- receiving a plurality of wireless signals from a plurality of objects, the plurality of wireless signals received by at least three receivers;
- and
- determining a location of at least one of the objects within said area of interest based on time difference of arrival information calculated at each of the at least three receivers, said calculation of time difference of arrival information based on the plurality of wireless signals.
Dependencies are inferred from the claim text.