Systems and methods for estimating a tag's location

Abstract

Systems () and methods for determining a location of a tag (). The methods involve: receiving, at each detector of a plurality of detectors (-), a device transmission periodically transmitted from the tag; determining, by the detectors, Received Signal Strength Indictors ('RSSIs') for the device transmission received thereat; determining, by a computing device (), a probable location of the tag within the passage, first demarcated area or second demarcated area using the RSSIs and relationships between the RSSIs; determining a first likelihood value indicating the likelihood that the probable location is correct; and determining an estimated location of the tag within the passage, first demarcated area or second demarcated area based on the probable location when the first likelihood value meets a first criteria.