{"id":"https://openalex.org/W2944504088","doi":"https://doi.org/10.3390/rs11091098","title":"A Three-Step Method for Determining Unhealthy Time Period of GPS Satellite Orbit in Broadcast Ephemeris and Its Preliminary Applications for Precise Orbit Determination","display_name":"A Three-Step Method for Determining Unhealthy Time Period of GPS Satellite Orbit in Broadcast Ephemeris and Its Preliminary Applications for Precise Orbit Determination","publication_year":2019,"publication_date":"2019-05-08","ids":{"openalex":"https://openalex.org/W2944504088","doi":"https://doi.org/10.3390/rs11091098","mag":"2944504088"},"language":"en","primary_location":{"id":"doi:10.3390/rs11091098","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11091098","pdf_url":"https://www.mdpi.com/2072-4292/11/9/1098/pdf?version=1557395613","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2072-4292/11/9/1098/pdf?version=1557395613","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5100357235","display_name":"Fei Ye","orcid":"https://orcid.org/0000-0003-4728-7849"},"institutions":[{"id":"https://openalex.org/I4391767648","display_name":"State Key Laboratory of Geodesy and Earth's Dynamics","ror":"https://ror.org/051yfbn24","country_code":null,"type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4391767648","https://openalex.org/I4414411459"]},{"id":"https://openalex.org/I4210105990","display_name":"Institute of Geodesy and Geophysics","ror":"https://ror.org/01gkn6j11","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210105990"]},{"id":"https://openalex.org/I4210165038","display_name":"University of Chinese Academy of Sciences","ror":"https://ror.org/05qbk4x57","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210165038"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fei Ye","raw_affiliation_strings":["College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China","Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China"],"affiliations":[{"raw_affiliation_string":"College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, A19 Yuquan Road, Beijing 100049, China","institution_ids":["https://openalex.org/I4210165038"]},{"raw_affiliation_string":"Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101531305","display_name":"Yunbin Yuan","orcid":"https://orcid.org/0000-0001-5653-5950"},"institutions":[{"id":"https://openalex.org/I4391767648","display_name":"State Key Laboratory of Geodesy and Earth's Dynamics","ror":"https://ror.org/051yfbn24","country_code":null,"type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4391767648","https://openalex.org/I4414411459"]},{"id":"https://openalex.org/I4210105990","display_name":"Institute of Geodesy and Geophysics","ror":"https://ror.org/01gkn6j11","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210105990"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Yunbin Yuan","raw_affiliation_strings":["Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China"],"affiliations":[{"raw_affiliation_string":"Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101653926","display_name":"Baocheng Zhang","orcid":"https://orcid.org/0000-0001-5006-1432"},"institutions":[{"id":"https://openalex.org/I4391767648","display_name":"State Key Laboratory of Geodesy and Earth's Dynamics","ror":"https://ror.org/051yfbn24","country_code":null,"type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4391767648","https://openalex.org/I4414411459"]},{"id":"https://openalex.org/I4210105990","display_name":"Institute of Geodesy and Geophysics","ror":"https://ror.org/01gkn6j11","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210105990"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Baocheng Zhang","raw_affiliation_strings":["Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China"],"affiliations":[{"raw_affiliation_string":"Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5019269034","display_name":"Bingfeng Tan","orcid":"https://orcid.org/0000-0003-4069-2032"},"institutions":[{"id":"https://openalex.org/I4391767648","display_name":"State Key Laboratory of Geodesy and Earth's Dynamics","ror":"https://ror.org/051yfbn24","country_code":null,"type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4391767648","https://openalex.org/I4414411459"]},{"id":"https://openalex.org/I4210105990","display_name":"Institute of Geodesy and Geophysics","ror":"https://ror.org/01gkn6j11","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210105990"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Bingfeng Tan","raw_affiliation_strings":["Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China"],"affiliations":[{"raw_affiliation_string":"Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5108666470","display_name":"OU Jikun","orcid":null},"institutions":[{"id":"https://openalex.org/I4391767648","display_name":"State Key Laboratory of Geodesy and Earth's Dynamics","ror":"https://ror.org/051yfbn24","country_code":null,"type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4391767648","https://openalex.org/I4414411459"]},{"id":"https://openalex.org/I4210105990","display_name":"Institute of Geodesy and Geophysics","ror":"https://ror.org/01gkn6j11","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210105990"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jikun Ou","raw_affiliation_strings":["Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China"],"affiliations":[{"raw_affiliation_string":"Institute of Geodesy and Geophysics, CAS, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth\u2019s Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]},{"raw_affiliation_string":"State Key Laboratory of Geodesy and Earth's Dynamics, 340 Xudong Street, Wuhan 430077, China","institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5101531305"],"corresponding_institution_ids":["https://openalex.org/I4210105990","https://openalex.org/I4391767648"],"apc_list":{"value":2500,"currency":"CHF","value_usd":2707},"apc_paid":{"value":2500,"currency":"CHF","value_usd":2707},"fwci":1.1901,"has_fulltext":true,"cited_by_count":4,"citation_normalized_percentile":{"value":0.83017881,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"11","issue":"9","first_page":"1098","last_page":"1098"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10655","display_name":"GNSS positioning and interference","score":0.9998999834060669,"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":0.9998999834060669,"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/T10159","display_name":"Ionosphere and magnetosphere dynamics","score":0.9940000176429749,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"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/T12004","display_name":"Advanced Frequency and Time Standards","score":0.9929999709129333,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/ephemeris","display_name":"Ephemeris","score":0.9020324945449829},{"id":"https://openalex.org/keywords/orbit-determination","display_name":"Orbit determination","score":0.7135440707206726},{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.7107912302017212},{"id":"https://openalex.org/keywords/gnss-applications","display_name":"GNSS applications","score":0.7012083530426025},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6803715229034424},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.6082214117050171},{"id":"https://openalex.org/keywords/orbit","display_name":"Orbit (dynamics)","score":0.5704334378242493},{"id":"https://openalex.org/keywords/geodesy","display_name":"Geodesy","score":0.5197346210479736},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.4346487522125244},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.4102001190185547},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.17853546142578125},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1528407633304596},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.08809614181518555},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.07904034852981567},{"id":"https://openalex.org/keywords/astronomy","display_name":"Astronomy","score":0.07248854637145996}],"concepts":[{"id":"https://openalex.org/C64828349","wikidata":"https://www.wikidata.org/wiki/Q120200","display_name":"Ephemeris","level":3,"score":0.9020324945449829},{"id":"https://openalex.org/C107768556","wikidata":"https://www.wikidata.org/wiki/Q302660","display_name":"Orbit determination","level":3,"score":0.7135440707206726},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.7107912302017212},{"id":"https://openalex.org/C14279187","wikidata":"https://www.wikidata.org/wiki/Q5514012","display_name":"GNSS applications","level":3,"score":0.7012083530426025},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6803715229034424},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.6082214117050171},{"id":"https://openalex.org/C196644772","wikidata":"https://www.wikidata.org/wiki/Q3884964","display_name":"Orbit (dynamics)","level":2,"score":0.5704334378242493},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.5197346210479736},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.4346487522125244},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4102001190185547},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.17853546142578125},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1528407633304596},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.08809614181518555},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.07904034852981567},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.07248854637145996},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/rs11091098","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11091098","pdf_url":"https://www.mdpi.com/2072-4292/11/9/1098/pdf?version=1557395613","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:caa7ba43bd624e91befaebee7728d662","is_oa":true,"landing_page_url":"https://doaj.org/article/caa7ba43bd624e91befaebee7728d662","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing, Vol 11, Iss 9, p 1098 (2019)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2072-4292/11/9/1098/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/rs11091098","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Remote Sensing; Volume 11; Issue 9; Pages: 1098","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/rs11091098","is_oa":true,"landing_page_url":"https://doi.org/10.3390/rs11091098","pdf_url":"https://www.mdpi.com/2072-4292/11/9/1098/pdf?version=1557395613","source":{"id":"https://openalex.org/S43295729","display_name":"Remote Sensing","issn_l":"2072-4292","issn":["2072-4292"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G5384982133","display_name":null,"funder_award_id":"2016YFB0501900","funder_id":"https://openalex.org/F4320321540","funder_display_name":"Ministry of Science and Technology of the People's Republic of China"}],"funders":[{"id":"https://openalex.org/F4320321540","display_name":"Ministry of Science and Technology of the People's Republic of China","ror":"https://ror.org/027s68j25"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2944504088.pdf","grobid_xml":"https://content.openalex.org/works/W2944504088.grobid-xml"},"referenced_works_count":35,"referenced_works":["https://openalex.org/W51033981","https://openalex.org/W1974437027","https://openalex.org/W1983985357","https://openalex.org/W1984917551","https://openalex.org/W1990939458","https://openalex.org/W2002973032","https://openalex.org/W2008880315","https://openalex.org/W2028323557","https://openalex.org/W2034736140","https://openalex.org/W2046753768","https://openalex.org/W2063085808","https://openalex.org/W2081990068","https://openalex.org/W2085137788","https://openalex.org/W2094280389","https://openalex.org/W2098334401","https://openalex.org/W2134691634","https://openalex.org/W2140050818","https://openalex.org/W2158409078","https://openalex.org/W2160057192","https://openalex.org/W2174865296","https://openalex.org/W2281653717","https://openalex.org/W2345912119","https://openalex.org/W2348019892","https://openalex.org/W2356657644","https://openalex.org/W2573739355","https://openalex.org/W2616154079","https://openalex.org/W2735140955","https://openalex.org/W2767881019","https://openalex.org/W2774723681","https://openalex.org/W2793722864","https://openalex.org/W2794510868","https://openalex.org/W2810635330","https://openalex.org/W2893177086","https://openalex.org/W6704960046","https://openalex.org/W6745439240"],"related_works":["https://openalex.org/W4377099179","https://openalex.org/W2049596291","https://openalex.org/W2371902865","https://openalex.org/W1967554369","https://openalex.org/W2079649661","https://openalex.org/W2009358203","https://openalex.org/W2061149446","https://openalex.org/W2597115578","https://openalex.org/W2370781830","https://openalex.org/W2377434744"],"abstract_inverted_index":{"Abnormal":[0],"information":[1,15,34,61,96,152,254,319,420],"of":[2,59,67,118,126,139,172,203,336,386,402,424],"satellite":[3,18,79,88,141,258,299,388,404],"orbits":[4,19],"inevitably":[5],"appears":[6],"in":[7,20,42,122,143,153,169,174,198,223,249,321,354,390,421],"the":[8,31,37,56,65,93,99,106,116,192,199,204,213,224,237,240,245,253,271,279,285,288,315,326,329,337,348,358,362,379,415,422],"broadcast":[9,144,225,392],"ephemeris.":[10],"Failure":[11],"to":[12,148,180,229,236,265,284,325,377,398,417],"obtain":[13],"unhealthy":[14,33,60,94,136,151,166,182,241,293,309,316,381],"on":[16,105,191,212,231,270],"GPS":[17,26,140],"precise":[21,305],"orbit":[22,95,142,306,317,389],"determination":[23,307],"(POD)":[24],"degrades":[25],"service":[27],"performance.":[28],"At":[29],"present,":[30],"reliable":[32,150],"published":[35],"by":[36,98,256,278],"Center":[38],"for":[39,74,134,185,221,297,308,340,400,408],"Orbit":[40],"Determination":[41],"Europe":[43],"(CODE)":[44],"is":[45,103,158,311],"usually":[46],"used,":[47],"but":[48,274],"it":[49,163,216,275,365,413],"has":[50,414],"at":[51],"least":[52],"one-day":[53],"latency,":[54],"and":[55,69,85,110,162,188,333,347],"current":[57],"level":[58],"cannot":[62,114],"fully":[63],"meet":[64,115,378],"requirements":[66,385],"rapid":[68],"real-time":[70,380],"geodetic":[71],"applications,":[72],"especially":[73],"non-IGS":[75],"(International":[76],"global":[77],"navigation":[78,87],"systems":[80],"(GNSS)":[81],"Service)":[82],"analysis":[83],"centers":[84],"BeiDou":[86],"system":[89],"(BDS)":[90],"users.":[91],"Furthermore,":[92,282,396],"detected":[97,217],"traditional":[100,238,280,286,359],"method,":[101,239,287],"which":[102],"based":[104,190],"synchronized":[107],"pseudo-range":[108],"residuals":[109],"regional":[111],"observation":[112,173,411],"network,":[113],"requirement":[117],"setting":[119],"separate":[120],"sub-arcs":[121],"POD.":[123,395],"In":[124,303],"view":[125],"these":[127],"problems,":[128],"we":[129],"propose":[130],"a":[131,159,298,374,387,391],"three-step":[132,246,289,349],"method":[133,157,206,247,290,339,350],"determining":[135],"time":[137,167,183,243,294,382],"periods":[138,168,184],"ephemeris":[145,226,393],"during":[146,394],"POD":[147],"provide":[149,373,418],"near-real":[154],"time.":[155],"This":[156],"single-epoch":[160],"solution,":[161],"can":[164,291,366,372],"detect":[165,181],"each":[170],"sampling":[171],"theory.":[175],"It":[176],"was":[177,207,248,276],"subsequently":[178],"used":[179],"satellites":[186,310],"G09":[187,222,341],"G01":[189,261],"111":[193],"globally":[194],"distributed":[195],"tracking":[196],"stations":[197],"IGS.":[200],"The":[201],"performance":[202],"new":[205,338],"evaluated":[208],"using":[209,244],"cross-validation.":[210],"Based":[211],"test":[214],"results,":[215,364],"an":[218,267,352],"orbital":[219,268],"leap":[220,269],"from":[227],"09:59:42":[228],"14:00:42":[230],"25":[232],"August":[233],"2017.":[234],"Compared":[235,324],"start":[242],"better":[250],"agreement":[251],"with":[252,314,357],"provided":[255],"CODE\u2019s":[257,403],"crux":[259,405],"files.":[260],"did":[262],"not":[263],"appear":[264],"have":[266],"specified":[272],"date,":[273],"misjudged":[277],"method.":[281,360],"compared":[283,356,397],"perform":[292],"period":[295,383],"detection":[296,384],"all":[300],"day":[301],"long.":[302],"addition,":[304],"realized":[312],"successfully":[313],"arc":[318],"identified":[320],"this":[322,370],"study.":[323],"CODE":[327],"orbit,":[328],"root":[330],"mean":[331],"square":[332],"standard":[334],"deviation":[335],"are":[342],"less":[343],"than":[344],"2":[345],"cm,":[346],"shows":[351],"improvement":[353],"accuracy":[355],"From":[361],"above":[363],"be":[367],"seen":[368],"that":[369],"study":[371],"feasible":[375],"approach":[376],"waiting":[399],"updates":[401],"files":[406],"or":[407],"accumulating":[409],"delayed":[410],"data,":[412],"potential":[416],"additional":[419],"process":[423],"generating":[425],"ultra-rapid/real-time":[426],"orbits.":[427]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2019-05-16T00:00:00"}
