{"id":"https://openalex.org/W2513318291","doi":"https://doi.org/10.1109/icl-gnss.2016.7533689","title":"Extended prediction of QZSS orbit and clock","display_name":"Extended prediction of QZSS orbit and clock","publication_year":2016,"publication_date":"2016-06-01","ids":{"openalex":"https://openalex.org/W2513318291","doi":"https://doi.org/10.1109/icl-gnss.2016.7533689","mag":"2513318291"},"language":"en","primary_location":{"id":"doi:10.1109/icl-gnss.2016.7533689","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icl-gnss.2016.7533689","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2016 International Conference on Localization and GNSS (ICL-GNSS)","raw_type":"proceedings-article"},"type":"article","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/A5076789517","display_name":"Helena Lepp\u00e4koski","orcid":"https://orcid.org/0000-0002-2333-3065"},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":true,"raw_author_name":"Helena Leppakoski","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland"],"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037470485","display_name":"Sakari Rautalin","orcid":null},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Sakari Rautalin","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland"],"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100395675","display_name":"Xiaolong Zhang","orcid":"https://orcid.org/0000-0001-7257-4028"},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Xiaolong Zhang","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland"],"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075406208","display_name":"Simo Ali\u2010L\u00f6ytty","orcid":"https://orcid.org/0000-0002-6720-7722"},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Simo Ali-Loytty","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland"],"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5002638646","display_name":"Robert Pich\u00e9","orcid":"https://orcid.org/0000-0003-1158-6951"},"institutions":[{"id":"https://openalex.org/I4210133110","display_name":"Tampere University","ror":null,"country_code":"FI","type":null,"lineage":["https://openalex.org/I4210133110"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Robert Piche","raw_affiliation_strings":["Tampere University of Technology, Tampere, Finland"],"affiliations":[{"raw_affiliation_string":"Tampere University of Technology, Tampere, Finland","institution_ids":["https://openalex.org/I4210133110"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5076789517"],"corresponding_institution_ids":["https://openalex.org/I4210133110"],"apc_list":null,"apc_paid":null,"fwci":5.4063,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.9717799,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"7"},"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":0.9987000226974487,"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":0.9976000189781189,"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/quasi-zenith-satellite-system","display_name":"Quasi-Zenith Satellite System","score":0.7665334939956665},{"id":"https://openalex.org/keywords/orbit","display_name":"Orbit (dynamics)","score":0.6255395412445068},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.4664674997329712},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.46345990896224976},{"id":"https://openalex.org/keywords/orbit-determination","display_name":"Orbit determination","score":0.4447074830532074},{"id":"https://openalex.org/keywords/geodesy","display_name":"Geodesy","score":0.326138973236084},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.19717800617218018},{"id":"https://openalex.org/keywords/satellite-system","display_name":"Satellite system","score":0.18765154480934143},{"id":"https://openalex.org/keywords/global-positioning-system","display_name":"Global Positioning System","score":0.1373421549797058},{"id":"https://openalex.org/keywords/gnss-applications","display_name":"GNSS applications","score":0.11215084791183472},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.10315078496932983},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.10269537568092346},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.08708459138870239}],"concepts":[{"id":"https://openalex.org/C68477667","wikidata":"https://www.wikidata.org/wiki/Q862327","display_name":"Quasi-Zenith Satellite System","level":5,"score":0.7665334939956665},{"id":"https://openalex.org/C196644772","wikidata":"https://www.wikidata.org/wiki/Q3884964","display_name":"Orbit (dynamics)","level":2,"score":0.6255395412445068},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.4664674997329712},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.46345990896224976},{"id":"https://openalex.org/C107768556","wikidata":"https://www.wikidata.org/wiki/Q302660","display_name":"Orbit determination","level":3,"score":0.4447074830532074},{"id":"https://openalex.org/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.326138973236084},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.19717800617218018},{"id":"https://openalex.org/C2778027091","wikidata":"https://www.wikidata.org/wiki/Q25346003","display_name":"Satellite system","level":4,"score":0.18765154480934143},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.1373421549797058},{"id":"https://openalex.org/C14279187","wikidata":"https://www.wikidata.org/wiki/Q5514012","display_name":"GNSS applications","level":3,"score":0.11215084791183472},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.10315078496932983},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10269537568092346},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.08708459138870239},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icl-gnss.2016.7533689","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icl-gnss.2016.7533689","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2016 International Conference on Localization and GNSS (ICL-GNSS)","raw_type":"proceedings-article"},{"id":"pmh:oai:trepo.tuni.fi:10024/213208","is_oa":false,"landing_page_url":"https://trepo.tuni.fi/handle/10024/213208","pdf_url":null,"source":{"id":"https://openalex.org/S7407055260","display_name":"Trepo - Institutional Repository of Tampere University","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"conference"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.4699999988079071}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W935283655","https://openalex.org/W1492755539","https://openalex.org/W1606277414","https://openalex.org/W1679924553","https://openalex.org/W1979154650","https://openalex.org/W1985074584","https://openalex.org/W2063085808","https://openalex.org/W2068993095","https://openalex.org/W2098334401","https://openalex.org/W2111620409","https://openalex.org/W2210762898","https://openalex.org/W2556564373","https://openalex.org/W3112696102","https://openalex.org/W6688270939"],"related_works":["https://openalex.org/W2371902865","https://openalex.org/W2009358203","https://openalex.org/W2061149446","https://openalex.org/W2370781830","https://openalex.org/W2377434744","https://openalex.org/W2370452453","https://openalex.org/W2626616059","https://openalex.org/W2371469048","https://openalex.org/W2352750479","https://openalex.org/W2353100473"],"abstract_inverted_index":{"This":[0],"paper":[1],"presents":[2],"results":[3],"on":[4],"the":[5,8,17,29,32,41,44,54,66,110,130,136,142],"accuracy":[6],"of":[7,25,31,34,43,46,87,95,115,141,155,163,172],"extended":[9,26],"(aka":[10],"autonomous)":[11],"orbit":[12,61,84],"and":[13,40,62,64,90,98,118,124,138,148,159,166,168],"clock":[14,63,132],"predictions":[15],"for":[16,92,112,133],"first":[18],"QZSS":[19,131],"satellite":[20,37,60],"in":[21],"orbit.":[22],"The":[23],"purpose":[24],"prediction":[27,67,85,93,113,144],"is":[28],"reduction":[30],"time-to-first-fix":[33],"a":[35,75],"stand-alone":[36],"navigation":[38],"receiver":[39],"improvement":[42],"availability":[45],"positioning":[47],"during":[48],"weak":[49],"signal":[50],"conditions.":[51],"We":[52],"describe":[53],"models":[55],"we":[56,69,82],"used":[57],"to":[58],"predict":[59],"present":[65],"accuracies":[68,86,111],"obtained":[70,83],"with":[71,106,153,161,170],"our":[72],"models.":[73],"With":[74,102],"constant-parameter":[76],"solar":[77],"radiation":[78],"pressure":[79],"(SRP)":[80],"model,":[81],"8,":[88],"25,":[89],"80m":[91],"lengths":[94,114],"3,":[96,116],"7,":[97,117,122],"14":[99,119,164],"days,":[100,135,157,165],"respectively.":[101,127],"an":[103],"SRP":[104],"model":[105],"seasonally":[107],"varying":[108],"parameters":[109,152],"days":[120],"are":[121],"14,":[123],"34":[125],"m,":[126],"When":[128],"predicting":[129],"7":[134,156],"68%":[137],"95%":[139],"quantiles":[140],"accumulated":[143],"errors":[145],"were":[146],"9":[147],"24m":[149],"when":[150],"using":[151],"age":[154,162,171],"13":[158],"33m":[160],"22":[167],"62m":[169],"28":[173],"days.":[174]},"counts_by_year":[{"year":2018,"cited_by_count":1}],"updated_date":"2026-03-06T13:50:29.536080","created_date":"2025-10-10T00:00:00"}