{"id":"https://openalex.org/W2000800593","doi":"https://doi.org/10.1143/jjap.47.4325","title":"Target Detectability Using Coded Acoustic Signal in Indoor Environments","display_name":"Target Detectability Using Coded Acoustic Signal in Indoor Environments","publication_year":2008,"publication_date":"2008-05-01","ids":{"openalex":"https://openalex.org/W2000800593","doi":"https://doi.org/10.1143/jjap.47.4325","mag":"2000800593"},"language":"en","primary_location":{"id":"doi:10.1143/jjap.47.4325","doi":"https://doi.org/10.1143/jjap.47.4325","is_oa":false,"landing_page_url":"https://doi.org/10.1143/jjap.47.4325","pdf_url":null,"source":{"id":"https://openalex.org/S143744711","display_name":"Japanese Journal of Applied Physics","issn_l":"0021-4922","issn":["0021-4922","1347-4065"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-70","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310311669","host_organization_name":"Institute of Physics","host_organization_lineage":["https://openalex.org/P4310311669"],"host_organization_lineage_names":["Institute of Physics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Japanese Journal of Applied Physics","raw_type":"journal-article"},"volume":null,"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/A5061992785","display_name":"H. Matsuo","orcid":"https://orcid.org/0000-0002-8774-1930","observed_orcids":["https://orcid.org/0000-0002-8774-1930"]},"institutions":[{"id":"https://openalex.org/I159385669","display_name":"Chiba University","ror":"https://ror.org/01hjzeq58","country_code":"JP","type":"education","lineage":["https://openalex.org/I159385669"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroshi Matsuo","raw_affiliation_strings":["Graduate School of Advanced and Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Advanced and Integration Science, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan","institution_ids":["https://openalex.org/I159385669"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044970442","display_name":"Tadashi Yamaguchi","orcid":"https://orcid.org/0000-0001-5761-4888","observed_orcids":["https://orcid.org/0000-0001-5761-4888"]},"institutions":[{"id":"https://openalex.org/I159385669","display_name":"Chiba University","ror":"https://ror.org/01hjzeq58","country_code":"JP","type":"education","lineage":["https://openalex.org/I159385669"]},{"id":"https://openalex.org/I4405287687","display_name":"Center for Frontier Medical Engineering, Chiba University","ror":"https://ror.org/05x00z898","country_code":"JP","type":"facility","lineage":["https://openalex.org/I159385669","https://openalex.org/I4405287687"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tadashi Yamaguchi","raw_affiliation_strings":["Research Center for Frontier Medical Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Research Center for Frontier Medical Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan","institution_ids":["https://openalex.org/I159385669","https://openalex.org/I4405287687"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048181211","display_name":"Hiroyuki Hachiya","orcid":"https://orcid.org/0000-0001-6033-3454","observed_orcids":["https://orcid.org/0000-0001-6033-3454"]},"institutions":[{"id":"https://openalex.org/I114531698","display_name":"Tokyo Institute of Technology","ror":"https://ror.org/0112mx960","country_code":"JP","type":"education","lineage":["https://openalex.org/I114531698","https://openalex.org/I4400009020"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroyuki Hachiya","raw_affiliation_strings":["Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School of Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan","institution_ids":["https://openalex.org/I114531698"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2210,"currency":"USD","value_usd":2210},"apc_paid":null,"fwci":3.4322,"has_fulltext":false,"cited_by_count":28,"citation_normalized_percentile":{"value":0.91321852,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"47","issue":"5S","first_page":"4325","last_page":"4325"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10891","display_name":"Radar Systems and Signal Processing","score":0.3959999978542328,"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/T10891","display_name":"Radar Systems and Signal Processing","score":0.3959999978542328,"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/T10662","display_name":"Ultrasonics and Acoustic Wave Propagation","score":0.3905999958515167,"subfield":{"id":"https://openalex.org/subfields/2211","display_name":"Mechanics of Materials"},"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":0.023900000378489494,"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/target-detection","display_name":"target detection","score":0.5699999928474426},{"id":"https://openalex.org/keywords/m-sequences","display_name":"m-sequences","score":0.8659999966621399},{"id":"https://openalex.org/keywords/reverberation","display_name":"reverberation","score":0.8529999852180481},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"signal-to-noise ratio","score":0.9419999718666077},{"id":"https://openalex.org/keywords/reverberation-suppression","display_name":"reverberation suppression","score":0.6830000281333923},{"id":"https://openalex.org/keywords/object-characterization","display_name":"object characterization","score":0.4519999921321869},{"id":"https://openalex.org/keywords/acoustic-scattering","display_name":"acoustic scattering","score":0.47099998593330383}],"concepts":[{"id":"https://openalex.org/C95851461","wikidata":"https://www.wikidata.org/wiki/Q468809","display_name":"Reverberation","level":2,"score":0.9125644564628601},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.8127237558364868},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.6842054724693298},{"id":"https://openalex.org/C70836080","wikidata":"https://www.wikidata.org/wiki/Q837940","display_name":"Impulse (physics)","level":2,"score":0.6183598637580872},{"id":"https://openalex.org/C72279823","wikidata":"https://www.wikidata.org/wiki/Q1139726","display_name":"Impulse response","level":2,"score":0.4936724603176117},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.45513877272605896},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4311666488647461},{"id":"https://openalex.org/C100675267","wikidata":"https://www.wikidata.org/wiki/Q1371624","display_name":"Background noise","level":2,"score":0.4210968017578125},{"id":"https://openalex.org/C191486275","wikidata":"https://www.wikidata.org/wiki/Q210028","display_name":"Scattering","level":2,"score":0.4177209734916687},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.38587287068367004},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.2937462627887726},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.12849339842796326},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.07224470376968384},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","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},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1143/jjap.47.4325","doi":"https://doi.org/10.1143/jjap.47.4325","is_oa":false,"landing_page_url":"https://doi.org/10.1143/jjap.47.4325","pdf_url":null,"source":{"id":"https://openalex.org/S143744711","display_name":"Japanese Journal of Applied Physics","issn_l":"0021-4922","issn":["0021-4922","1347-4065"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","dongbi-d","jufo-1","ki-jl-1","norway-1","poland-70","russia-white-list-2","vabb-shw"],"host_organization":"https://openalex.org/P4310311669","host_organization_name":"Institute of Physics","host_organization_lineage":["https://openalex.org/P4310311669"],"host_organization_lineage_names":["Institute of Physics"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Japanese Journal of Applied Physics","raw_type":"journal-article"},{"id":"pmh:oai:irdb.nii.ac.jp:00897:0004017943","doi":null,"is_oa":false,"landing_page_url":"http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100561131","pdf_url":null,"source":{"id":"https://openalex.org/S7407056385","display_name":"Institutional Repositories DataBase (IRDB)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I184597095","host_organization_name":"National Institute of Informatics","host_organization_lineage":["https://openalex.org/I184597095"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Japanese Journal of Applied Physics","raw_type":"journal article"},{"id":"pmh:oai:t2r2.star.titech.ac.jp:50036682","doi":null,"is_oa":false,"landing_page_url":"http://t2r2.star.titech.ac.jp/cgi-bin/publicationinfo.cgi?q_publication_content_number=CTT100561131","pdf_url":null,"source":{"id":"https://openalex.org/S4377196385","display_name":"Tokyo Tech Research Repository (Tokyo Institute of Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I114531698","host_organization_name":"Tokyo Institute of Technology","host_organization_lineage":["https://openalex.org/I114531698"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W1968390112","https://openalex.org/W1983249983","https://openalex.org/W1992154266","https://openalex.org/W1993473111","https://openalex.org/W1996148991","https://openalex.org/W2003245413","https://openalex.org/W2005451533","https://openalex.org/W2055382538","https://openalex.org/W2060171421","https://openalex.org/W2060886357","https://openalex.org/W2074420209","https://openalex.org/W2077113445","https://openalex.org/W2089029067","https://openalex.org/W2094942006","https://openalex.org/W2095063182","https://openalex.org/W2109457713","https://openalex.org/W2332365282"],"related_works":["https://openalex.org/W7144940393","https://openalex.org/W2095063182","https://openalex.org/W1983399330","https://openalex.org/W3100411479","https://openalex.org/W3197507134","https://openalex.org/W2159157176","https://openalex.org/W2915147352","https://openalex.org/W2388556484","https://openalex.org/W2388523602","https://openalex.org/W3200941138"],"abstract_inverted_index":{"An":[0],"acoustic":[1,26],"method":[2],"in":[3,18,54,69,81,107,120,152],"air":[4],"has":[5],"the":[6,11,34,39,61,74,79,86,108,115,121,139,143,147,150,153,159,163],"potential":[7],"to":[8,24,46],"allow":[9],"for":[10],"fast":[12],"and":[13,33,85,102,111,157],"accurate":[14],"characterization":[15],"of":[16,30,36,89,123,162],"objects":[17],"air.":[19,55],"Nevertheless,":[20],"it":[21,43],"is":[22,44,131],"difficult":[23],"identify":[25],"signals":[27,37,110,145,148],"clearly":[28],"because":[29],"environmental":[31],"noises":[32],"scattering":[35],"on":[38],"object":[40,62],"surface.":[41],"Therefore,":[42],"required":[45],"establish":[47],"a":[48,97,124],"sensing":[49],"system,":[50],"which":[51],"enables":[52],"measurements":[53],"In":[56,135],"this":[57],"paper,":[58],"we":[59,137],"present":[60],"detection":[63],"using":[64,96,146],"an":[65,70],"M":[66,75,126],"-sequence":[67,76,127],"signal":[68,77],"indoor":[71],"environment.":[72],"Using":[73],"enabled":[78],"improvement":[80],"signal-to-noise":[82],"(SN)":[83],"ratio":[84],"stable":[87],"measurement":[88],"reflected":[90,112],"waves":[91,113],"that":[92,119],"cannot":[93],"be":[94],"detected":[95],"conventional":[98],"impulse.":[99],"The":[100],"noise":[101],"reverberation":[103,140,154],"components":[104],"are":[105],"included":[106],"received":[109,144],"from":[114,142],"target.":[116,164],"We":[117],"confirmed":[118],"case":[122,156],"high-order":[125],"signal,":[128],"target":[129,151],"detectability":[130],"limited":[132,155],"by":[133],"reverberation.":[134],"addition,":[136],"eliminated":[138],"component":[141],"without":[149],"determined":[158],"reflection":[160],"characteristics":[161]},"counts_by_year":[{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2017,"cited_by_count":4},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":3},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":3}],"updated_date":"2026-10-24T09:50:30.924529","created_date":"2016-06-24T00:00:00"}
