{"id":"https://openalex.org/W4411867405","doi":"https://doi.org/10.23919/transcom.2025cep0001","title":"Localization of Unknown Radio Sources in Space Radio Monitoring by Downlink Frequency of a Single Geostationary Satellite","display_name":"Localization of Unknown Radio Sources in Space Radio Monitoring by Downlink Frequency of a Single Geostationary Satellite","publication_year":2025,"publication_date":"2025-07-01","ids":{"openalex":"https://openalex.org/W4411867405","doi":"https://doi.org/10.23919/transcom.2025cep0001"},"language":"en","primary_location":{"id":"doi:10.23919/transcom.2025cep0001","is_oa":false,"landing_page_url":"https://doi.org/10.23919/transcom.2025cep0001","pdf_url":null,"source":{"id":"https://openalex.org/S2493627025","display_name":"IEICE Transactions on Communications","issn_l":"0916-8516","issn":["0916-8516","1745-1345"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Transactions on Communications","raw_type":"journal-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/A5064099051","display_name":"Takeshi Amishima","orcid":null},"institutions":[{"id":"https://openalex.org/I16656306","display_name":"Meiji University","ror":"https://ror.org/02rqvrp93","country_code":"JP","type":"education","lineage":["https://openalex.org/I16656306"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Takeshi Amishima","raw_affiliation_strings":["School of Science and Technology, Meiji University,Department of Electronics and Bioinformatics,Kawasaki-shi,Japan,214-8571","Department of Electronics and Bioinformatics, School of Science and Technology, Meiji University, Higashimita 1-1-1, Tama-ku, Kawasaki, 214-8571 Japan"],"affiliations":[{"raw_affiliation_string":"School of Science and Technology, Meiji University,Department of Electronics and Bioinformatics,Kawasaki-shi,Japan,214-8571","institution_ids":["https://openalex.org/I16656306"]},{"raw_affiliation_string":"Department of Electronics and Bioinformatics, School of Science and Technology, Meiji University, Higashimita 1-1-1, Tama-ku, Kawasaki, 214-8571 Japan","institution_ids":["https://openalex.org/I16656306"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5064099051"],"corresponding_institution_ids":["https://openalex.org/I16656306"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.1146173,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"E109-B","issue":"2","first_page":"259","last_page":"268"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12717","display_name":"Space exploration and regulation","score":0.9803000092506409,"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"}},"topics":[{"id":"https://openalex.org/T12717","display_name":"Space exploration and regulation","score":0.9803000092506409,"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/T11701","display_name":"Space Satellite Systems and Control","score":0.9801999926567078,"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/T10655","display_name":"GNSS positioning and interference","score":0.9648000001907349,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/geostationary-orbit","display_name":"Geostationary orbit","score":0.8659913539886475},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7743868231773376},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7716877460479736},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.586154580116272},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5042699575424194},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.4812776446342468},{"id":"https://openalex.org/keywords/radio-frequency","display_name":"Radio frequency","score":0.47654348611831665},{"id":"https://openalex.org/keywords/communications-satellite","display_name":"Communications satellite","score":0.44575995206832886},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.10993051528930664},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10254403948783875},{"id":"https://openalex.org/keywords/astronomy","display_name":"Astronomy","score":0.07394814491271973}],"concepts":[{"id":"https://openalex.org/C16405173","wikidata":"https://www.wikidata.org/wiki/Q192316","display_name":"Geostationary orbit","level":3,"score":0.8659913539886475},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7743868231773376},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7716877460479736},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.586154580116272},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5042699575424194},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.4812776446342468},{"id":"https://openalex.org/C74064498","wikidata":"https://www.wikidata.org/wiki/Q3396184","display_name":"Radio frequency","level":2,"score":0.47654348611831665},{"id":"https://openalex.org/C121308736","wikidata":"https://www.wikidata.org/wiki/Q149918","display_name":"Communications satellite","level":3,"score":0.44575995206832886},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.10993051528930664},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10254403948783875},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.07394814491271973}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.23919/transcom.2025cep0001","is_oa":false,"landing_page_url":"https://doi.org/10.23919/transcom.2025cep0001","pdf_url":null,"source":{"id":"https://openalex.org/S2493627025","display_name":"IEICE Transactions on Communications","issn_l":"0916-8516","issn":["0916-8516","1745-1345"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Transactions on Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1595397610","https://openalex.org/W1995027184","https://openalex.org/W2128968870","https://openalex.org/W2138726444","https://openalex.org/W2139058551","https://openalex.org/W2394997223","https://openalex.org/W2468180493","https://openalex.org/W2772491889","https://openalex.org/W2782273938","https://openalex.org/W2889073658","https://openalex.org/W3000129189","https://openalex.org/W3015485233","https://openalex.org/W3041135229","https://openalex.org/W3080791502","https://openalex.org/W3097732552","https://openalex.org/W3121495651","https://openalex.org/W3213072942","https://openalex.org/W4310007272","https://openalex.org/W4364322497","https://openalex.org/W4381416555","https://openalex.org/W4388856314","https://openalex.org/W4406458275"],"related_works":["https://openalex.org/W4389284368","https://openalex.org/W3128070617","https://openalex.org/W1577900704","https://openalex.org/W2021594568","https://openalex.org/W1726924277","https://openalex.org/W2492344019","https://openalex.org/W4293253992","https://openalex.org/W2149298787","https://openalex.org/W2028190576","https://openalex.org/W4206958678"],"abstract_inverted_index":{"In":[0],"this":[1],"study,":[2],"we":[3,51],"propose":[4],"a":[5,16,20,47,75,85,123,133,138,155,173],"localization":[6,26,57,107,139,198],"method":[7,27],"for":[8],"localizing":[9],"interference":[10],"sources":[11],"affecting":[12],"geostationary":[13,22,124],"satellites,":[14],"using":[15,46,117],"downlink":[17,120],"signal":[18,121],"from":[19,122],"single":[21],"satellite.":[23],"The":[24],"proposed":[25],"cancels":[28],"out":[29],"the":[30,53,56,60,69,80,98,118,149,160,167,178],"frequency":[31],"offset":[32],"caused":[33],"in":[34,41,84,182],"satellite":[35,61,125],"transponder":[36],"by":[37],"taking":[38],"double":[39],"differential":[40],"terms":[42],"of":[43,89,97,141,186],"time":[44],"and":[45,59,71,151,163,169],"reference":[48],"station.":[49],"Furthermore,":[50],"examine":[52],"relationship":[54],"between":[55],"accuracy":[58,108],"motion.":[62],"Results":[63],"indicate":[64],"that":[65],"Circular":[66],"motion":[67,113,147,165],"along":[68,148,166],"east-west":[70,168],"north-south":[72,150],"directions":[73,153,171],"within":[74,154,172],"two-dimensional":[76,156,174],"plane":[77,157,175],"parallel":[78],"to":[79,93,110,131,159,177,190,196],"Earth's":[81,161,179],"surface,":[82,162,180],"results":[83],"wider":[86,102],"intersection":[87,103,184],"angle":[88,104],"FOA":[90,99,187],"contours":[91,188],"due":[92,189],"larger":[94],"temporal":[95,192],"transitions":[96],"contours.":[100],"This":[101],"consequently":[105],"improves":[106],"compared":[109],"other":[111],"circular":[112,146,164],"directions.":[114],"For":[115],"example,":[116],"Ku-band":[119],"positioned":[126],"at":[127],"150\u00b0":[128],"E":[129],"longitude":[130],"locate":[132],"Tokyo-based":[134],"radio":[135],"source":[136],"yielded":[137],"error":[140],"approximately":[142],"8.4":[143],"km.":[144],"Conversely,":[145],"geocenter-exocenter":[152,170],"perpendicular":[158,176],"resulted":[181],"narrower":[183],"angles":[185],"smaller":[191],"transitions,":[193],"thus":[194],"leading":[195],"decreased":[197],"accuracy.":[199]},"counts_by_year":[],"updated_date":"2026-02-07T06:11:34.122080","created_date":"2025-10-10T00:00:00"}
