{"id":"https://openalex.org/W4248981723","doi":"https://doi.org/10.1145/2426656.2426724","title":"Indoor pseudo-ranging of mobile devices using ultrasonic chirps","display_name":"Indoor pseudo-ranging of mobile devices using ultrasonic chirps","publication_year":2012,"publication_date":"2012-11-06","ids":{"openalex":"https://openalex.org/W4248981723","doi":"https://doi.org/10.1145/2426656.2426724"},"language":"en","primary_location":{"id":"doi:10.1145/2426656.2426724","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2426656.2426724","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 10th ACM Conference on Embedded Network Sensor Systems","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/A5088944335","display_name":"Patrick Lazik","orcid":null},"institutions":[{"id":"https://openalex.org/I74973139","display_name":"Carnegie Mellon University","ror":"https://ror.org/05x2bcf33","country_code":"US","type":"education","lineage":["https://openalex.org/I74973139"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Patrick Lazik","raw_affiliation_strings":["Carnegie Mellon University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Carnegie Mellon University","institution_ids":["https://openalex.org/I74973139"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5056379112","display_name":"Anthony Rowe","orcid":"https://orcid.org/0000-0003-2332-9450"},"institutions":[{"id":"https://openalex.org/I74973139","display_name":"Carnegie Mellon University","ror":"https://ror.org/05x2bcf33","country_code":"US","type":"education","lineage":["https://openalex.org/I74973139"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Anthony Rowe","raw_affiliation_strings":["Carnegie Mellon University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Carnegie Mellon University","institution_ids":["https://openalex.org/I74973139"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.7489,"has_fulltext":false,"cited_by_count":45,"citation_normalized_percentile":{"value":0.86768186,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"391","last_page":"392"},"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/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/ranging","display_name":"Ranging","score":0.8712849020957947},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7543011903762817},{"id":"https://openalex.org/keywords/chirp","display_name":"Chirp","score":0.504214882850647},{"id":"https://openalex.org/keywords/frequency-modulation","display_name":"Frequency modulation","score":0.4750747084617615},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.47027117013931274},{"id":"https://openalex.org/keywords/ultrasonic-sensor","display_name":"Ultrasonic sensor","score":0.4263896942138672},{"id":"https://openalex.org/keywords/synchronizing","display_name":"Synchronizing","score":0.41273611783981323},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.36717456579208374},{"id":"https://openalex.org/keywords/acoustics","display_name":"Acoustics","score":0.3351075053215027},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.25671133399009705},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.19189879298210144},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.17304393649101257},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.11899220943450928}],"concepts":[{"id":"https://openalex.org/C115051666","wikidata":"https://www.wikidata.org/wiki/Q6522493","display_name":"Ranging","level":2,"score":0.8712849020957947},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7543011903762817},{"id":"https://openalex.org/C132794960","wikidata":"https://www.wikidata.org/wiki/Q27304","display_name":"Chirp","level":3,"score":0.504214882850647},{"id":"https://openalex.org/C11930861","wikidata":"https://www.wikidata.org/wiki/Q181417","display_name":"Frequency modulation","level":3,"score":0.4750747084617615},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.47027117013931274},{"id":"https://openalex.org/C81288441","wikidata":"https://www.wikidata.org/wiki/Q20736125","display_name":"Ultrasonic sensor","level":2,"score":0.4263896942138672},{"id":"https://openalex.org/C162932704","wikidata":"https://www.wikidata.org/wiki/Q1058791","display_name":"Synchronizing","level":3,"score":0.41273611783981323},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.36717456579208374},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.3351075053215027},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.25671133399009705},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.19189879298210144},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.17304393649101257},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.11899220943450928},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2426656.2426724","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2426656.2426724","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the 10th ACM Conference on Embedded Network Sensor Systems","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure","score":0.6399999856948853}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W2008263014","https://openalex.org/W2053884967","https://openalex.org/W2055284809","https://openalex.org/W2115460065"],"related_works":["https://openalex.org/W2133223292","https://openalex.org/W4245546600","https://openalex.org/W3215753468","https://openalex.org/W1676869724","https://openalex.org/W2061730362","https://openalex.org/W3151183660","https://openalex.org/W1980153655","https://openalex.org/W2124247115","https://openalex.org/W2543975391","https://openalex.org/W2354674176"],"abstract_inverted_index":{"In":[0,53],"this":[1],"demonstration,":[2],"we":[3,55],"show":[4],"an":[5],"indoor":[6],"location":[7],"tracking":[8],"system":[9,21],"that":[10,69,134],"broadcasts":[11],"ranging":[12,41],"data":[13,86],"to":[14,29,43,48,101,112,169],"mobile":[15,44,150,184],"phones":[16],"using":[17,117],"ultrasonic":[18],"signals.":[19],"The":[20],"capitalizes":[22],"on":[23,61,138],"the":[24,33,80,91,102,149,158,170,183],"ability":[25],"for":[26],"many":[27],"smart-phones":[28],"detect":[30],"audio":[31,75],"above":[32,79],"human":[34,81,92],"hearing":[35,82,93],"range.":[36,84],"This":[37,161],"approach":[38],"provides":[39],"enhanced":[40],"capabilities":[42],"devices":[45,151],"without":[46,155],"adding":[47],"or":[49],"modifying":[50],"their":[51],"hardware.":[52],"[1],":[54],"describe":[56],"a":[57,130,139,144],"modulation":[58],"scheme":[59,109],"based":[60],"rate-adaptive":[62],"wide-band":[63],"linear":[64],"frequency":[65,83],"modulated":[66],"chirp":[67],"pulses":[68],"can":[70,135,152,186],"be":[71,136],"transmitted":[72],"from":[73],"standard":[74],"tweeters":[76],"at":[77],"just":[78],"Acoustic":[85],"transmissions":[87],"(even":[88],"outside":[89],"of":[90,106,172],"range),":[94],"typically":[95],"introduce":[96],"audible":[97],"noises":[98],"(clicks)":[99],"due":[100],"non-ideal":[103],"impulse":[104],"response":[105],"speakers.":[107],"Our":[108],"is":[110,163],"optimized":[111],"avoid":[113],"these":[114],"artifacts":[115],"by":[116],"slowly":[118],"changing":[119],"power-levels":[120],"and":[121,174],"gradual":[122],"shifts":[123],"in":[124],"frequency.":[125],"Each":[126],"speaker":[127],"simultaneously":[128],"transmits":[129],"uniquely":[131],"identifiably":[132],"signature":[133],"geolocated":[137],"map.":[140],"By":[141],"then":[142],"applying":[143],"time-difference-of-arrival":[145],"(TDOA)":[146],"pseudo-ranging":[147],"technique":[148],"localize":[153],"themselves":[154],"synchronizing":[156],"with":[157,167],"broadcasting":[159],"infrastructure.":[160],"design":[162],"not":[164],"only":[165],"scalable":[166],"respect":[168],"number":[171],"transmitters":[173],"tracked":[175],"devices,":[176],"but":[177],"also":[178],"improves":[179],"user":[180],"privacy":[181],"since":[182],"device":[185],"compute":[187],"its":[188],"position":[189],"locally.":[190]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":3},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":3},{"year":2017,"cited_by_count":7},{"year":2016,"cited_by_count":11},{"year":2015,"cited_by_count":7}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}