{"id":"https://openalex.org/W2079685117","doi":"https://doi.org/10.1109/ipin.2013.6817872","title":"Acoustic local positioning system using an iOS device","display_name":"Acoustic local positioning system using an iOS device","publication_year":2013,"publication_date":"2013-10-01","ids":{"openalex":"https://openalex.org/W2079685117","doi":"https://doi.org/10.1109/ipin.2013.6817872","mag":"2079685117"},"language":"en","primary_location":{"id":"doi:10.1109/ipin.2013.6817872","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ipin.2013.6817872","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Conference on Indoor Positioning and Indoor Navigation","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/A5080496714","display_name":"Teodoro Aguilera","orcid":"https://orcid.org/0000-0001-9436-5999"},"institutions":[{"id":"https://openalex.org/I80606768","display_name":"Universidad de Extremadura","ror":"https://ror.org/0174shg90","country_code":"ES","type":"education","lineage":["https://openalex.org/I80606768"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"T. Aguilera","raw_affiliation_strings":["Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","institution_ids":["https://openalex.org/I80606768"]},{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006","institution_ids":["https://openalex.org/I80606768"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005579608","display_name":"Jos\u00e9 A. Paredes","orcid":"https://orcid.org/0000-0002-0412-0179"},"institutions":[{"id":"https://openalex.org/I80606768","display_name":"Universidad de Extremadura","ror":"https://ror.org/0174shg90","country_code":"ES","type":"education","lineage":["https://openalex.org/I80606768"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"J. A. Paredes","raw_affiliation_strings":["Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","institution_ids":["https://openalex.org/I80606768"]},{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006","institution_ids":["https://openalex.org/I80606768"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100711342","display_name":"Fernando J. \u00c1lvarez","orcid":"https://orcid.org/0000-0002-7610-1452"},"institutions":[{"id":"https://openalex.org/I80606768","display_name":"Universidad de Extremadura","ror":"https://ror.org/0174shg90","country_code":"ES","type":"education","lineage":["https://openalex.org/I80606768"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"F. J. Alvarez","raw_affiliation_strings":["Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","institution_ids":["https://openalex.org/I80606768"]},{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006","institution_ids":["https://openalex.org/I80606768"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000156377","display_name":"Jos\u00e9 Ignacio Su\u00e1rez","orcid":"https://orcid.org/0000-0002-7961-0244"},"institutions":[{"id":"https://openalex.org/I80606768","display_name":"Universidad de Extremadura","ror":"https://ror.org/0174shg90","country_code":"ES","type":"education","lineage":["https://openalex.org/I80606768"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"J. I. Suarez","raw_affiliation_strings":["Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain","institution_ids":["https://openalex.org/I80606768"]},{"raw_affiliation_string":"Department of Electrical Engineering, Electronic and Automatic, University of Extremadura, Badajoz, Spain, 06006","institution_ids":["https://openalex.org/I80606768"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5063313091","display_name":"\u00c1lvaro Hern\u00e1ndez","orcid":"https://orcid.org/0000-0001-9308-8133"},"institutions":[{"id":"https://openalex.org/I189268942","display_name":"Universidad de Alcal\u00e1","ror":"https://ror.org/04pmn0e78","country_code":"ES","type":"education","lineage":["https://openalex.org/I189268942"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"A. Hernandez","raw_affiliation_strings":["Electronics Department, University of Alcal\u00e1, Alcal\u00e1 de Henares, Spain","Electronics Department, University of Alcal\u00e1, Alcal\u00e1 de Henares, Spain, 28871"],"affiliations":[{"raw_affiliation_string":"Electronics Department, University of Alcal\u00e1, Alcal\u00e1 de Henares, Spain","institution_ids":["https://openalex.org/I189268942"]},{"raw_affiliation_string":"Electronics Department, University of Alcal\u00e1, Alcal\u00e1 de Henares, Spain, 28871","institution_ids":["https://openalex.org/I189268942"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5080496714"],"corresponding_institution_ids":["https://openalex.org/I80606768"],"apc_list":null,"apc_paid":null,"fwci":1.8916,"has_fulltext":false,"cited_by_count":30,"citation_normalized_percentile":{"value":0.87302002,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"8"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/T10860","display_name":"Speech and Audio Processing","score":0.9990000128746033,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13121","display_name":"Radio Wave Propagation Studies","score":0.9896000027656555,"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/microphone","display_name":"Microphone","score":0.8852906823158264},{"id":"https://openalex.org/keywords/multilateration","display_name":"Multilateration","score":0.7308893799781799},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7114081382751465},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.6134518384933472},{"id":"https://openalex.org/keywords/ultrasonic-sensor","display_name":"Ultrasonic sensor","score":0.4341461658477783},{"id":"https://openalex.org/keywords/ranging","display_name":"Ranging","score":0.43137434124946594},{"id":"https://openalex.org/keywords/sound-pressure","display_name":"Sound pressure","score":0.24772608280181885},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1542394757270813},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.1178564727306366}],"concepts":[{"id":"https://openalex.org/C2778263558","wikidata":"https://www.wikidata.org/wiki/Q46384","display_name":"Microphone","level":3,"score":0.8852906823158264},{"id":"https://openalex.org/C104037064","wikidata":"https://www.wikidata.org/wiki/Q1640884","display_name":"Multilateration","level":3,"score":0.7308893799781799},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7114081382751465},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.6134518384933472},{"id":"https://openalex.org/C81288441","wikidata":"https://www.wikidata.org/wiki/Q20736125","display_name":"Ultrasonic sensor","level":2,"score":0.4341461658477783},{"id":"https://openalex.org/C115051666","wikidata":"https://www.wikidata.org/wiki/Q6522493","display_name":"Ranging","level":2,"score":0.43137434124946594},{"id":"https://openalex.org/C68115822","wikidata":"https://www.wikidata.org/wiki/Q1068172","display_name":"Sound pressure","level":2,"score":0.24772608280181885},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1542394757270813},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.1178564727306366},{"id":"https://openalex.org/C62611344","wikidata":"https://www.wikidata.org/wiki/Q1062658","display_name":"Node (physics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/ipin.2013.6817872","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ipin.2013.6817872","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"International Conference on Indoor Positioning and Indoor Navigation","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.4699999988079071,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320329113","display_name":"Universidad de Extremadura","ror":"https://ror.org/0174shg90"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":23,"referenced_works":["https://openalex.org/W1481057382","https://openalex.org/W1507297365","https://openalex.org/W1565640193","https://openalex.org/W1983983559","https://openalex.org/W2017231306","https://openalex.org/W2026614995","https://openalex.org/W2054564044","https://openalex.org/W2055284809","https://openalex.org/W2071077565","https://openalex.org/W2080071821","https://openalex.org/W2093525562","https://openalex.org/W2094204865","https://openalex.org/W2112737587","https://openalex.org/W2118099695","https://openalex.org/W2135479785","https://openalex.org/W2167525497","https://openalex.org/W2170102584","https://openalex.org/W2182353117","https://openalex.org/W2565054776","https://openalex.org/W4243439813","https://openalex.org/W4252713891","https://openalex.org/W6630164316","https://openalex.org/W6730802904"],"related_works":["https://openalex.org/W2013359588","https://openalex.org/W4220807281","https://openalex.org/W1975134304","https://openalex.org/W1980209061","https://openalex.org/W2380594826","https://openalex.org/W2035181664","https://openalex.org/W2049810559","https://openalex.org/W2022039170","https://openalex.org/W2037537113","https://openalex.org/W1979127067"],"abstract_inverted_index":{"This":[0,153],"work":[1,55,90],"benefits":[2],"from":[3,60],"the":[4,7,22,27,31,58,100,144,156],"capability":[5,135],"of":[6,30,88,136,146,158,161,172],"iPhone's":[8],"or":[9],"iPad's":[10],"microphone":[11,35,131],"to":[12,43,62,69,79,92,139],"acquire":[13,140],"high-frequency":[14,120],"sound":[15,84,121],"for":[16,26,72,119,163],"accurate":[17,168],"acoustic":[18,141,164],"code":[19,165],"identification.":[20],"Although":[21],"maximum":[23],"theoretical":[24],"value":[25],"frequency":[28],"response":[29],"built-in":[32],"iOS":[33,108,137],"device":[34,162],"is":[36,91,117],"20":[37,147],"kHz,":[38,64],"emissions":[39],"with":[40],"frequencies":[41,51],"close":[42],"22":[44,63],"kHz":[45,148],"have":[46],"been":[47,150],"experimentally":[48],"detected.":[49],"The":[50,86,134],"used":[52,118],"in":[53,57,143],"this":[54,89,112,159],"are":[56,66,132],"range":[59],"18":[61],"which":[65],"high":[67],"enough":[68,78],"be":[70,80],"inaudible":[71],"almost":[73],"every":[74],"people":[75],"but":[76],"low":[77],"generated":[81],"by":[82,105,170],"standard":[83],"hardware.":[85],"aim":[87],"develop":[93],"an":[94,107],"inexpensive":[95],"indoor":[96],"positioning":[97,169],"system":[98,128],"where":[99],"user":[101],"gets":[102],"its":[103],"location":[104],"using":[106],"device's":[109],"microphone.":[110],"For":[111],"purpose":[113],"a":[114],"third-generation":[115],"iPad":[116],"data":[122],"acquisition":[123,127],"and":[124,167],"neither":[125],"external":[126],"nor":[129],"ultrasonic":[130],"required.":[133],"devices":[138],"signals":[142],"vicinity":[145],"has":[149],"successfully":[151],"demonstrated.":[152],"fact":[154],"allows":[155],"use":[157],"kind":[160],"detection":[166],"means":[171],"multilateration.":[173]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":4},{"year":2017,"cited_by_count":6},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":6}],"updated_date":"2026-01-13T01:12:25.745995","created_date":"2025-10-10T00:00:00"}