Real-Time Location System According to Node Synchronization Captured During Time Difference of Arrival Ranging

Abstract

Provided are a system and method for optimizing manner of time difference of arrival (TDOA) synchronization among affiliated wireless communications nodes. During a TDOA frame in which the affiliated nodes broadcast respective signals, at least one of the affiliated nodes can capture such signals of others of the nodes to calculate a synchronization factor enabling perceived signal synchronicity when location according to a TDOA framework is determined. The synchronization factor can be used in location determination according to a TDOA frame, thereby affording at least dual synchronization and location measurement to occur for such a TDOA frame and those frames that follow. In these ways, efficiency for TDOA operations overall is enhanced through streamlining of synchronization and location measurement operations affording conservation of node energy and increased availability of synchronization evaluation.

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