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AssigneeZebra Technologies Corporation
InventorsEdward A. Richley, Belinda Turner, Chang Wang
Estimating the term…
The present invention provides methods for an active RFID tag target location system that provides for an iterative recalculating of a target location estimate by successively testing receiver TOA and DTOA error measurements and discarding outlier receivers. The present invention works to reduce the erratic effects that multipath channel interference and random noise play in target location systems due to incorrect identification of the main pulse of the transmit signal. In addition to providing for a greater accuracy and consistency in a TOA-based target location system, the method also provides for an opportunity to reduce a transmission bandwidth associate with the TOA transmission by the multiple receivers. The method may be considered a post-processing element, as the determination of TOA and DTOA may require a real-time calculation, where the timing constraints for the ensuing target location estimate may be less severe.
A method for determining target location in a multiple receiver target location system, the multiple receiver target location system including a plurality of Real Time Location System (RTLS) tags each associated with a respective target, a plurality of RTLS receivers, and a central processor, comprising:
-16. (canceled)
A computer program product comprising at least one non-transitory computer-readable storage medium having computer-executable program code portions stored therein, the computer-executable program code portions comprising program code instructions configured to:
The computer program product of Clam 17, wherein the computer-executable program code portions comprising program code instructions are further configured to:
The computer program product of Clam 17, wherein the computer-executable program code portions comprising program code instructions are further configured to:
The computer program product of Clam 17, wherein the computer-executable program code portions comprising program code instructions are further configured to:
-32. (canceled)
An apparatus for determining target location in a multiple receiver target location system, the multiple receiver target location system including a plurality of Real Time Location System (RTLS) tags each associated with a respective target and a plurality of RTLS receivers, the apparatus comprising at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the processor, cause the apparatus to at least:
-48. (canceled)
Dependencies are inferred from the claim text.