{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/101316"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/101316","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Peer-to-peer wireless ultrawide-band localization of fast-moving entities","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","abstract_html":"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","abstract_has_math":false,"creators":["Ravaioli, Umberto J."],"institution":"University of Illinois at Urbana-Champaign","degree_name":"M.S.","degree_level":"Thesis","degree_discipline":"Electrical & Computer Engr","degree_department":null,"school":null,"contributors":["Choudhury, Romit R."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2018,"date_issued":"2018-09-04T20:47:14Z","date_published":"2018-09-04T20:47:14Z","updated_at":"2026-07-22T22:24:38Z","subjects":["wireless","localization","dop","dilution of precision","occlusion","mds","relative","peer-to-peer","ultra-wideband","uwb","two-way ranging","twr"],"languages":["en"],"rights":["Copyright 2018 Umberto Ravaioli"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/2142/101316","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Choudhury, Romit R."]},{"key":"dc:creator","label":"Author","values":["Ravaioli, Umberto J."]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2018-09-04T20:47:14Z","2020-09-05T09:15:26Z","2018-04-15","2018-05"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical & Computer Engr"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["M.S."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["wireless","localization","dop","dilution of precision","occlusion","mds","relative","peer-to-peer","ultra-wideband","uwb","two-way ranging","twr"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["Copyright 2018 Umberto Ravaioli"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/101316"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["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","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-05-01","The student, Umberto Ravaioli, accepted the attached license on 2018-04-14 at 13:01.","The student, Umberto Ravaioli, submitted this Thesis for approval on 2018-04-14 at 13:15.","This Thesis was approved for publication on 2018-04-15 at 11:59.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12250 on 2018-08-31 at 17:29:04","Made available in DSpace on 2018-09-04T20:47:14Z (GMT). No. of bitstreams: 2 RAVAIOLI-THESIS-2018.pdf: 6511943 bytes, checksum: 18abd0fbe869298a2a098e9b45c02b26 (MD5) LICENSE.txt: 4213 bytes, checksum: b0489788c078f4b27569dfb6b1b44b7b (MD5) Previous issue date: 2018-04-15","Embargo set by: Seth Robbins for item 107401 Lift date: 2020-09-04T20:47:38Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 107401 Lift date: 2020-09-04T20:50:11Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 107401 on 2020-09-05T09:15:26Z."]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Peer-to-peer wireless ultrawide-band localization of fast-moving entities"]}]}],"canonical_facts":{"dc:contributor":["Choudhury, Romit R."],"dc:creator":["Ravaioli, Umberto J."],"dc:date":["2018-09-04T20:47:14Z","2020-09-05T09:15:26Z","2018-04-15","2018-05"],"dc:description":["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","Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2020-05-01","The student, Umberto Ravaioli, accepted the attached license on 2018-04-14 at 13:01.","The student, Umberto Ravaioli, submitted this Thesis for approval on 2018-04-14 at 13:15.","This Thesis was approved for publication on 2018-04-15 at 11:59.","DSpace SAF Submission Ingestion Package generated from Vireo submission #12250 on 2018-08-31 at 17:29:04","Made available in DSpace on 2018-09-04T20:47:14Z (GMT). No. of bitstreams: 2 RAVAIOLI-THESIS-2018.pdf: 6511943 bytes, checksum: 18abd0fbe869298a2a098e9b45c02b26 (MD5) LICENSE.txt: 4213 bytes, checksum: b0489788c078f4b27569dfb6b1b44b7b (MD5) Previous issue date: 2018-04-15","Embargo set by: Seth Robbins for item 107401 Lift date: 2020-09-04T20:47:38Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Embargo set by: Seth Robbins for item 107401 Lift date: 2020-09-04T20:50:11Z Reason: Author requested closed access (OA after 2yrs) in Vireo ETD system","Limited Restriction Lifted for Item 107401 on 2020-09-05T09:15:26Z."],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/2142/101316"],"dc:language":["en"],"dc:rights":["Copyright 2018 Umberto Ravaioli"],"dc:subject":["wireless","localization","dop","dilution of precision","occlusion","mds","relative","peer-to-peer","ultra-wideband","uwb","two-way ranging","twr"],"dc:title":["Peer-to-peer wireless ultrawide-band localization of fast-moving entities"],"dc:type":["text"],"thesis:degree_discipline":["Electrical & Computer Engr"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["M.S."],"thesis:institution_name":["University of Illinois at Urbana-Champaign"]},"updated_at":"2026-07-22T22:24:38Z"}