System and method for phase shift based time of arrival (TOA) reporting in passive location ranging
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United States of America Patent
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Nov 8, 2022
Grant Date -
Jun 18, 2020
app pub date -
Nov 27, 2019
filing date -
Dec 12, 2018
priority date (Note) -
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Abstract
A method and system for phase shift based time of arrival (TOA) reporting in passive location ranging is herein provided. According to one embodiment, a method includes measuring, by a responder station (RSTA), a first phase shift time of arrival (PS-TOA); measuring, by an initiator station (ISTA), a second PS-TOA; reporting, by the RSTA, the first PS-TOA, reporting, by the ISTA, the second PS-TOA; broadcasting, by the RSTA, time stamps; and determining, by a passive station (PSTA), a differential distance between the PSTA and a pair of the RSTA and ISTA based on the first PS-TOA, the second PS-TOA, and the broadcast time stamps.
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