{"id":"https://openalex.org/W2189501526","doi":null,"title":"Ocean Acoustic Transient Signal Extraction in a Multipath Environment","display_name":"Ocean Acoustic Transient Signal Extraction in a Multipath Environment","publication_year":1990,"publication_date":"1990-01-01","ids":{"openalex":"https://openalex.org/W2189501526","mag":"2189501526"},"language":"en","primary_location":{"id":"mag:2189501526","doi":null,"is_oa":false,"landing_page_url":"http://ieeexplore.ieee.org/iel5/132/3385/00116238.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Emmanuel M. Maragakis","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Emmanuel M. Maragakis","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.22633911,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11698","display_name":"Underwater Acoustics Research","score":0.5464000105857849,"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"}},"topics":[{"id":"https://openalex.org/T11698","display_name":"Underwater Acoustics Research","score":0.5464000105857849,"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"}},{"id":"https://openalex.org/T10931","display_name":"Direction-of-Arrival Estimation Techniques","score":0.20389999449253082,"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/T11192","display_name":"Underwater Vehicles and Communication Systems","score":0.08780000358819962,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean 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/multipath-propagation","display_name":"multipath propagation","score":0.9710000157356262},{"id":"https://openalex.org/keywords/time-of-arrival-estimation","display_name":"time of arrival estimation","score":0.878000020980835},{"id":"https://openalex.org/keywords/waveform-estimation","display_name":"waveform estimation","score":0.8650000095367432},{"id":"https://openalex.org/keywords/maximum-likelihood-estimation","display_name":"maximum likelihood estimation","score":0.9580000042915344},{"id":"https://openalex.org/keywords/underwater-acoustics","display_name":"underwater acoustics","score":0.6029999852180481}],"concepts":[{"id":"https://openalex.org/C161218011","wikidata":"https://www.wikidata.org/wiki/Q11827794","display_name":"Multipath propagation","level":3,"score":0.782994270324707},{"id":"https://openalex.org/C197424946","wikidata":"https://www.wikidata.org/wiki/Q1165717","display_name":"Waveform","level":3,"score":0.6860396265983582},{"id":"https://openalex.org/C2779843651","wikidata":"https://www.wikidata.org/wiki/Q7390335","display_name":"SIGNAL (programming language)","level":2,"score":0.6854724287986755},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5500971078872681},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5337774753570557},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4969954788684845},{"id":"https://openalex.org/C24890656","wikidata":"https://www.wikidata.org/wiki/Q82811","display_name":"Acoustics","level":1,"score":0.4656214416027069},{"id":"https://openalex.org/C117251300","wikidata":"https://www.wikidata.org/wiki/Q1849855","display_name":"Parametric statistics","level":2,"score":0.4654660224914551},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.44563955068588257},{"id":"https://openalex.org/C3017552255","wikidata":"https://www.wikidata.org/wiki/Q4135208","display_name":"Arrival time","level":2,"score":0.43430596590042114},{"id":"https://openalex.org/C163150518","wikidata":"https://www.wikidata.org/wiki/Q4135208","display_name":"Time of arrival","level":3,"score":0.43302568793296814},{"id":"https://openalex.org/C112633086","wikidata":"https://www.wikidata.org/wiki/Q381287","display_name":"White noise","level":2,"score":0.42137813568115234},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.28952980041503906},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.27978259325027466},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2412726879119873},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.16067731380462646},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.12436115741729736},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11103460192680359},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.09369167685508728},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.07998824119567871},{"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/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.0},{"id":"https://openalex.org/C22212356","wikidata":"https://www.wikidata.org/wiki/Q775325","display_name":"Transport engineering","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}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:2189501526","doi":null,"is_oa":false,"landing_page_url":"http://ieeexplore.ieee.org/iel5/132/3385/00116238.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":5,"referenced_works":["https://openalex.org/W1858009524","https://openalex.org/W1983704292","https://openalex.org/W2037771653","https://openalex.org/W2100991756","https://openalex.org/W2156785792"],"related_works":["https://openalex.org/W2136657302","https://openalex.org/W1884966367","https://openalex.org/W2060189616","https://openalex.org/W2046153097","https://openalex.org/W2106367634","https://openalex.org/W2102914531","https://openalex.org/W1989972912","https://openalex.org/W7214612331","https://openalex.org/W2130412472","https://openalex.org/W2065024129"],"abstract_inverted_index":{"We":[0,107],"consider":[1],"the":[2,6,45,49,61,65,69,77,81,87,90,97,109],"problem":[3],"of":[4,9,21,60,80,89,105,114,117],"estimating":[5],"arrival":[7,50,62],"times":[8,63],"overlapping":[10],"or":[11],"nonoverlapping":[12],"ocean-acoustic":[13],"signals":[14,115],"from":[15],"a":[16,102,112],"received":[17],"signal":[18,25,98],"which":[19,67],"consists":[20],"an":[22],"unknown":[23,70],"deterministic":[24],"along":[26],"with":[27,72],"scaled":[28],"and":[29,48,64,95],"delayed":[30],"versions":[31],"due":[32],"to":[33,42,101],"multipath":[34],"propagation":[35],"plus":[36],"additive":[37],"noise.":[38],"Our":[39,83],"objective":[40],"is":[41,93],"simultaneously":[43],"determine":[44],"transmitted":[46],"waveform":[47],"times.":[51],"The":[52],"proposed":[53],"algorithm":[54,110],"obtains":[55],"approximately":[56],"maximum":[57],"likelihood":[58],"estimates":[59],"parameters":[66],"characterize":[68],"signal,":[71],"much":[73],"less":[74],"computations":[75],"than":[76],"direct":[78],"implementation":[79],"MLE.":[82],"assumptions":[84],"are":[85],"that":[86,96],"number":[88],"different":[91],"paths":[92],"known":[94],"miist":[99],"belong":[100],"parametric":[103],"class":[104,113],"signals.":[106],"demonstrate":[108],"on":[111],"consisting":[116],"gated":[118],"sinusoids.":[119]},"counts_by_year":[],"updated_date":"2026-09-29T14:09:16.559479","created_date":"2016-06-24T00:00:00"}