Peer-to-peer wireless ultrawide-band localization of fast-moving entities

wireless;localization;dop;dilution of precision;occlusion;mds;relative;peer-to-peer;ultra-wideband;uwb;two-way ranging;twr, ,

Ravaioli, Umberto J. ; Choudhury ; Romit R.

关键词: wireless;    localization;    dop;    dilution of precision;    occlusion;    mds;    relative;    peer-to-peer;    ultra-wideband;    uwb;    two-way ranging;    twr, ,;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/101316/RAVAIOLI-THESIS-2018.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

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