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Title:Peer-to-peer wireless ultrawide-band localization of fast-moving entities
Author(s):Ravaioli, Umberto J.
Advisor(s):Choudhury, Romit R.
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Degree:M.S.
Genre:Thesis
Subject(s):wireless
localization
dop
dilution of precision
occlusion
mds
relative
peer-to-peer
ultra-wideband
uwb
two-way ranging
twr
Abstract:This thesis presents peer-to-peer localization techniques such that a group of mobile nodes can continuously track its topology, without relying on external infrastructure. Ultrawide-band (UWB) radios worn by each node (humans in our case) perform time-of-flight (TOF) measurements between different node pairs, ultimately determining the group topology. The key challenge pertains to the selection of which TOF measurements should be performed, since not all are needed to determine the topology. We show that phenomena like dilution of precision (DOP) and signal occlusion warrant careful node selection; otherwise, the localization accuracy degrades severely. Moreover, we show that the broadcast nature of wireless channels can be exploited to pipeline more TOF measurements in a smaller window of time. Of course, all these design decisions must survive the lack of clock synchronization, fast mobility and rotations of the nodes, and link quality degradation
Issue Date:2018-04-15
Type:Text
URI:http://hdl.handle.net/2142/101316
Rights Information:Copyright 2018 Umberto Ravaioli
Date Available in IDEALS:2018-09-04
2020-09-05
Date Deposited:2018-05


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