{"id":"https://openalex.org/W7130558156","doi":"https://doi.org/10.1109/ictc66702.2025.11387827","title":"Time Synchronization for LEO Satellites Positioning in GNSS Resilient Systems","display_name":"Time Synchronization for LEO Satellites Positioning in GNSS Resilient Systems","publication_year":2025,"publication_date":"2025-10-14","ids":{"openalex":"https://openalex.org/W7130558156","doi":"https://doi.org/10.1109/ictc66702.2025.11387827"},"language":null,"primary_location":{"id":"doi:10.1109/ictc66702.2025.11387827","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ictc66702.2025.11387827","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 16th International Conference on Information and Communication Technology Convergence (ICTC)","raw_type":"proceedings-article"},"type":"conference-paper","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5126431429","display_name":"Heonwoo Chu","orcid":null},"institutions":[{"id":"https://openalex.org/I57664883","display_name":"Ajou University","ror":"https://ror.org/03tzb2h73","country_code":"KR","type":"education","lineage":["https://openalex.org/I57664883"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Heonwoo Chu","raw_affiliation_strings":["Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5126366261","display_name":"Jaeyeol Lee","orcid":null},"institutions":[{"id":"https://openalex.org/I57664883","display_name":"Ajou University","ror":"https://ror.org/03tzb2h73","country_code":"KR","type":"education","lineage":["https://openalex.org/I57664883"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jaeyeol Lee","raw_affiliation_strings":["Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499","Ajou University,Department of Space Survey Information Technology,Suwon,South Korea,16499"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]},{"raw_affiliation_string":"Ajou University,Department of Space Survey Information Technology,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5126367744","display_name":"Taehan Moon","orcid":null},"institutions":[{"id":"https://openalex.org/I57664883","display_name":"Ajou University","ror":"https://ror.org/03tzb2h73","country_code":"KR","type":"education","lineage":["https://openalex.org/I57664883"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Taehan Moon","raw_affiliation_strings":["Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5126410775","display_name":"Jaeyeong Lee","orcid":null},"institutions":[{"id":"https://openalex.org/I57664883","display_name":"Ajou University","ror":"https://ror.org/03tzb2h73","country_code":"KR","type":"education","lineage":["https://openalex.org/I57664883"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jaeyeong Lee","raw_affiliation_strings":["Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499","Ajou University,Department of Space Survey Information Technology,Suwon,South Korea,16499"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]},{"raw_affiliation_string":"Ajou University,Department of Space Survey Information Technology,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5126416630","display_name":"Jihong Park","orcid":null},"institutions":[{"id":"https://openalex.org/I57664883","display_name":"Ajou University","ror":"https://ror.org/03tzb2h73","country_code":"KR","type":"education","lineage":["https://openalex.org/I57664883"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jihong Park","raw_affiliation_strings":["Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ajou University,Department of Artificial Intelligence Convergence Network,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041027404","display_name":"Junsu Kim","orcid":"https://orcid.org/0000-0001-9583-7978"},"institutions":[{"id":"https://openalex.org/I57664883","display_name":"Ajou University","ror":"https://ror.org/03tzb2h73","country_code":"KR","type":"education","lineage":["https://openalex.org/I57664883"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jae-Hyun Kim","raw_affiliation_strings":["Ajou University,Department of Electrical and Computer Engineering,Suwon,South Korea,16499"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ajou University,Department of Electrical and Computer Engineering,Suwon,South Korea,16499","institution_ids":["https://openalex.org/I57664883"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I57664883"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.77777576,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"2178","last_page":"2180"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.58160001039505,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.58160001039505,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12004","display_name":"Advanced Frequency and Time Standards","score":0.26019999384880066,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12216","display_name":"Network Time Synchronization Technologies","score":0.12409999966621399,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/gnss-applications","display_name":"GNSS applications","score":0.7724999785423279},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.5576000213623047},{"id":"https://openalex.org/keywords/satellite-navigation","display_name":"Satellite navigation","score":0.5338000059127808},{"id":"https://openalex.org/keywords/precise-point-positioning","display_name":"Precise Point Positioning","score":0.5070000290870667},{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.49900001287460327},{"id":"https://openalex.org/keywords/synchronization","display_name":"Synchronization (alternating current)","score":0.491100013256073},{"id":"https://openalex.org/keywords/satellite-system","display_name":"Satellite system","score":0.48669999837875366},{"id":"https://openalex.org/keywords/clock-synchronization","display_name":"Clock synchronization","score":0.4016999900341034},{"id":"https://openalex.org/keywords/clock-drift","display_name":"Clock drift","score":0.38429999351501465}],"concepts":[{"id":"https://openalex.org/C14279187","wikidata":"https://www.wikidata.org/wiki/Q5514012","display_name":"GNSS applications","level":3,"score":0.7724999785423279},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6514999866485596},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.5576000213623047},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.539900004863739},{"id":"https://openalex.org/C36301306","wikidata":"https://www.wikidata.org/wiki/Q179435","display_name":"Satellite navigation","level":3,"score":0.5338000059127808},{"id":"https://openalex.org/C202511199","wikidata":"https://www.wikidata.org/wiki/Q7239503","display_name":"Precise Point Positioning","level":4,"score":0.5070000290870667},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.49900001287460327},{"id":"https://openalex.org/C2778562939","wikidata":"https://www.wikidata.org/wiki/Q1298791","display_name":"Synchronization (alternating current)","level":3,"score":0.491100013256073},{"id":"https://openalex.org/C2778027091","wikidata":"https://www.wikidata.org/wiki/Q25346003","display_name":"Satellite system","level":4,"score":0.48669999837875366},{"id":"https://openalex.org/C129891060","wikidata":"https://www.wikidata.org/wiki/Q1513059","display_name":"Clock synchronization","level":4,"score":0.4016999900341034},{"id":"https://openalex.org/C155837451","wikidata":"https://www.wikidata.org/wiki/Q1069144","display_name":"Clock drift","level":5,"score":0.38429999351501465},{"id":"https://openalex.org/C196644772","wikidata":"https://www.wikidata.org/wiki/Q3884964","display_name":"Orbit (dynamics)","level":2,"score":0.3492000102996826},{"id":"https://openalex.org/C2779585090","wikidata":"https://www.wikidata.org/wiki/Q3457762","display_name":"Resilience (materials science)","level":2,"score":0.3476000130176544},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.3330000042915344},{"id":"https://openalex.org/C95713431","wikidata":"https://www.wikidata.org/wiki/Q631425","display_name":"Vulnerability (computing)","level":2,"score":0.3199999928474426},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.3086000084877014},{"id":"https://openalex.org/C196597080","wikidata":"https://www.wikidata.org/wiki/Q227467","display_name":"Atomic clock","level":2,"score":0.3059999942779541},{"id":"https://openalex.org/C2778603505","wikidata":"https://www.wikidata.org/wiki/Q17141406","display_name":"Positioning system","level":3,"score":0.30570000410079956},{"id":"https://openalex.org/C166212672","wikidata":"https://www.wikidata.org/wiki/Q2165162","display_name":"GNSS augmentation","level":4,"score":0.30230000615119934},{"id":"https://openalex.org/C2777783341","wikidata":"https://www.wikidata.org/wiki/Q857141","display_name":"BeiDou Navigation Satellite System","level":4,"score":0.2994999885559082},{"id":"https://openalex.org/C112819843","wikidata":"https://www.wikidata.org/wiki/Q174241","display_name":"Sun-synchronous orbit","level":4,"score":0.28450000286102295},{"id":"https://openalex.org/C96566525","wikidata":"https://www.wikidata.org/wiki/Q7805282","display_name":"Time delay and integration","level":2,"score":0.28290000557899475},{"id":"https://openalex.org/C107768556","wikidata":"https://www.wikidata.org/wiki/Q302660","display_name":"Orbit determination","level":3,"score":0.2784000039100647},{"id":"https://openalex.org/C174201072","wikidata":"https://www.wikidata.org/wiki/Q1187347","display_name":"Pseudorange","level":4,"score":0.2734000086784363},{"id":"https://openalex.org/C3018325918","wikidata":"https://www.wikidata.org/wiki/Q663611","display_name":"Low earth orbit","level":3,"score":0.27140000462532043},{"id":"https://openalex.org/C199301463","wikidata":"https://www.wikidata.org/wiki/Q218414","display_name":"Medium Earth orbit","level":4,"score":0.26930001378059387}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/ictc66702.2025.11387827","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ictc66702.2025.11387827","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 16th International Conference on Information and Communication Technology Convergence (ICTC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W2972997281","https://openalex.org/W4288062148","https://openalex.org/W4380991952","https://openalex.org/W4398145022","https://openalex.org/W4404735311","https://openalex.org/W4408424460"],"related_works":[],"abstract_inverted_index":{"Low":[0],"Earth":[1,24],"orbit":[2,25],"(LEO)":[3],"satellites":[4,34,123,141],"have":[5],"attracted":[6],"attention":[7],"as":[8,38],"a":[9,95,100,112],"new":[10],"navigation":[11],"system":[12],"due":[13],"to":[14,17,22,114],"their":[15,89],"ability":[16],"provide":[18],"stronger":[19],"signals":[20,86],"compared":[21],"medium":[23],"(MEO)":[26],"satellites.":[27,67],"However,":[28],"severe":[29],"clock":[30,39,52,119,125,137,160],"errors":[31,138,155],"in":[32],"LEO":[33,66,75,122],"degrade":[35],"positioning":[36,64,77,116,154],"accuracy,":[37],"biases":[40],"distort":[41],"signal":[42],"propagation":[43],"time":[44],"and":[45],"cause":[46],"range":[47],"estimation":[48],"errors.":[49],"Therefore,":[50],"periodic":[51],"correction":[53],"using":[54,124],"existing":[55],"Global":[56],"Navigation":[57],"Satellite":[58],"Systems":[59],"(GNSS)":[60],"is":[61],"required":[62],"for":[63,103,136],"with":[65],"Reliance":[68],"on":[69],"GNSS":[70,85],"undermines":[71],"the":[72,92,150,158],"resilience":[73],"of":[74,84,94,121,157],"satellite":[76,159],"systems,":[78],"since":[79],"any":[80],"disruption":[81],"or":[82],"manipulation":[83],"directly":[87],"degrades":[88],"performance.":[90],"Consequently,":[91],"absence":[93],"trusted":[96],"timing":[97],"reference":[98],"remains":[99],"critical":[101],"vulnerability":[102],"LEO-based":[104],"positioning.":[105],"To":[106],"address":[107],"this":[108],"issue,":[109],"we":[110],"proposed":[111,133,151],"method":[113,134,152],"improve":[115],"accuracy":[117],"through":[118,142],"synchronization":[120],"information":[126],"exchange":[127],"over":[128],"inter-satellite":[129],"link":[130],"(ISL).":[131],"The":[132],"compensate":[135],"between":[139],"adjacent":[140],"distributed":[143],"average":[144],"consensus.":[145],"Simulation":[146],"results":[147],"demonstrate":[148],"that":[149],"reduces":[153],"regardless":[156],"type.":[161]},"counts_by_year":[],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2026-02-20T00:00:00"}