{"id":"https://openalex.org/W4413270929","doi":"https://doi.org/10.1109/lsp.2025.3590322","title":"NLOS Signal Identification for Acoustic Indoor Localization Using a Smartphone\u2019s Dual Microphones and Trainable FrFT","display_name":"NLOS Signal Identification for Acoustic Indoor Localization Using a Smartphone\u2019s Dual Microphones and Trainable FrFT","publication_year":2025,"publication_date":"2025-01-01","ids":{"openalex":"https://openalex.org/W4413270929","doi":"https://doi.org/10.1109/lsp.2025.3590322"},"language":"en","primary_location":{"id":"doi:10.1109/lsp.2025.3590322","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2025.3590322","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Signal Processing Letters","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/A5111247566","display_name":"Weimeng Cui","orcid":null},"institutions":[{"id":"https://openalex.org/I4391767838","display_name":"State Key Laboratory of Industrial Control Technology","ror":"https://ror.org/03a33a786","country_code":null,"type":"facility","lineage":["https://openalex.org/I4391767838","https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Weimeng Cui","raw_affiliation_strings":["State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China"],"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I4391767838"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101997556","display_name":"Ping Hu","orcid":"https://orcid.org/0000-0003-1115-0189"},"institutions":[{"id":"https://openalex.org/I4391767838","display_name":"State Key Laboratory of Industrial Control Technology","ror":"https://ror.org/03a33a786","country_code":null,"type":"facility","lineage":["https://openalex.org/I4391767838","https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Peixuan Hu","raw_affiliation_strings":["State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China"],"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I4391767838"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5115529757","display_name":"Yuzhang Xi","orcid":"https://orcid.org/0009-0000-1036-3647"},"institutions":[{"id":"https://openalex.org/I4391767838","display_name":"State Key Laboratory of Industrial Control Technology","ror":"https://ror.org/03a33a786","country_code":null,"type":"facility","lineage":["https://openalex.org/I4391767838","https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuzhang Xi","raw_affiliation_strings":["State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China"],"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I4391767838"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028690697","display_name":"Guangyao Liu","orcid":"https://orcid.org/0009-0008-2569-907X"},"institutions":[{"id":"https://openalex.org/I4391767838","display_name":"State Key Laboratory of Industrial Control Technology","ror":"https://ror.org/03a33a786","country_code":null,"type":"facility","lineage":["https://openalex.org/I4391767838","https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Guangyao Liu","raw_affiliation_strings":["State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China"],"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I4391767838"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100376381","display_name":"Zhi Wang","orcid":"https://orcid.org/0000-0002-0490-2031"},"institutions":[{"id":"https://openalex.org/I4391767838","display_name":"State Key Laboratory of Industrial Control Technology","ror":"https://ror.org/03a33a786","country_code":null,"type":"facility","lineage":["https://openalex.org/I4391767838","https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhi Wang","raw_affiliation_strings":["State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China"],"affiliations":[{"raw_affiliation_string":"State Key Laboratory of Industrial Control Technology, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I4391767838"]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5111247566"],"corresponding_institution_ids":["https://openalex.org/I4391767838"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.25467797,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"32","issue":null,"first_page":"2908","last_page":"2912"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.9994999766349792,"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"}},"topics":[{"id":"https://openalex.org/T10860","display_name":"Speech and Audio Processing","score":0.9994999766349792,"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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9987999796867371,"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/T11698","display_name":"Underwater Acoustics Research","score":0.9984999895095825,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/non-line-of-sight-propagation","display_name":"Non-line-of-sight propagation","score":0.849248468875885},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.606245756149292},{"id":"https://openalex.org/keywords/signal","display_name":"SIGNAL (programming language)","score":0.5701364278793335},{"id":"https://openalex.org/keywords/identification","display_name":"Identification (biology)","score":0.5476797819137573},{"id":"https://openalex.org/keywords/dual","display_name":"Dual (grammatical number)","score":0.5450125932693481},{"id":"https://openalex.org/keywords/signal-processing","display_name":"Signal processing","score":0.4724231958389282},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.428596556186676},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.40985915064811707},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.22569748759269714},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.13265493512153625},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10893240571022034},{"id":"https://openalex.org/keywords/art","display_name":"Art","score":0.06951415538787842}],"concepts":[{"id":"https://openalex.org/C154910267","wikidata":"https://www.wikidata.org/wiki/Q1740982","display_name":"Non-line-of-sight propagation","level":3,"score":0.849248468875885},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.606245756149292},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.5701364278793335},{"id":"https://openalex.org/C116834253","wikidata":"https://www.wikidata.org/wiki/Q2039217","display_name":"Identification (biology)","level":2,"score":0.5476797819137573},{"id":"https://openalex.org/C2780980858","wikidata":"https://www.wikidata.org/wiki/Q110022","display_name":"Dual (grammatical number)","level":2,"score":0.5450125932693481},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.4724231958389282},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.428596556186676},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.40985915064811707},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.22569748759269714},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.13265493512153625},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10893240571022034},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.06951415538787842},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C124952713","wikidata":"https://www.wikidata.org/wiki/Q8242","display_name":"Literature","level":1,"score":0.0},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lsp.2025.3590322","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lsp.2025.3590322","pdf_url":null,"source":{"id":"https://openalex.org/S120629676","display_name":"IEEE Signal Processing Letters","issn_l":"1070-9908","issn":["1070-9908","1558-2361"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Signal Processing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","score":0.5199999809265137,"display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":23,"referenced_works":["https://openalex.org/W1568450818","https://openalex.org/W2078938486","https://openalex.org/W2108710836","https://openalex.org/W2144145044","https://openalex.org/W2194775991","https://openalex.org/W2603133612","https://openalex.org/W2883672087","https://openalex.org/W2889526077","https://openalex.org/W2969465399","https://openalex.org/W2992507519","https://openalex.org/W3033032209","https://openalex.org/W3043706389","https://openalex.org/W3096016677","https://openalex.org/W3106902366","https://openalex.org/W3159850628","https://openalex.org/W3174892017","https://openalex.org/W4295308449","https://openalex.org/W4322768901","https://openalex.org/W4376481273","https://openalex.org/W4392405388","https://openalex.org/W4400276198","https://openalex.org/W4400679842","https://openalex.org/W4406028241"],"related_works":["https://openalex.org/W2172272784","https://openalex.org/W2003817535","https://openalex.org/W4307436769","https://openalex.org/W4323793210","https://openalex.org/W2366306259","https://openalex.org/W3101720559","https://openalex.org/W2143447014","https://openalex.org/W2218045119","https://openalex.org/W3172283447","https://openalex.org/W2110478555"],"abstract_inverted_index":{"Acoustic":[0],"indoor":[1],"positioning":[2],"technologies":[3,18],"are":[4],"gaining":[5],"attention":[6],"for":[7,39,77,97],"their":[8],"low":[9],"cost":[10],"and":[11,88],"high":[12],"accuracy.":[13],"However,":[14],"most":[15],"ranging-based":[16],"localization":[17],"suffer":[19],"from":[20,73],"significant":[21],"distance":[22],"measurement":[23],"errors":[24],"caused":[25],"by":[26,101],"Non-Line-of-Sight":[27],"(NLOS)":[28],"signal":[29],"propagation,":[30],"making":[31],"the":[32,112,119,126],"accurate":[33],"identification":[34,45,66,103],"of":[35,137],"NLOS":[36,44,65,102],"signals":[37,76],"crucial":[38],"achieving":[40,125],"precise":[41],"localization.":[42],"Existing":[43],"methods":[46],"either":[47],"rely":[48],"on":[49,111],"carefully":[50],"crafted":[51],"handcrafted":[52],"features":[53,72],"or":[54],"perform":[55],"poorly":[56],"in":[57,130],"cross-scenario":[58,131],"environments.":[59],"This":[60],"paper":[61],"presents":[62],"a":[63,85,89,105],"novel":[64],"algorithm":[67],"that":[68,118],"automatically":[69],"extracts":[70],"key":[71],"dynamic":[74],"acoustic":[75],"end-to-end":[78],"recognition.":[79],"Dual-channel":[80],"data":[81],"is":[82,95],"collected":[83],"using":[84,104],"smartphone\u2019s":[86],"microphones,":[87],"trainable":[90],"fractional":[91],"Fourier":[92],"transform":[93],"(FrFT)":[94],"applied":[96],"feature":[98],"extraction,":[99],"followed":[100],"convolutional":[106],"neural":[107],"network":[108],"(CNN)":[109],"based":[110],"ResNet":[113],"architecture.":[114],"Experimental":[115],"results":[116],"show":[117],"proposed":[120],"method":[121],"outperforms":[122],"existing":[123],"algorithms,":[124],"best":[127],"performance":[128],"metrics":[129],"experiments":[132],"with":[133],"an":[134],"average":[135],"accuracy":[136],"99.34%.":[138]},"counts_by_year":[],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
