{"id":"https://openalex.org/W2160415468","doi":"https://doi.org/10.1109/78.765122","title":"Investigative study of planar array ambiguities based on \"hyperhelical\" parameterization","display_name":"Investigative study of planar array ambiguities based on \"hyperhelical\" parameterization","publication_year":1999,"publication_date":"1999-06-01","ids":{"openalex":"https://openalex.org/W2160415468","doi":"https://doi.org/10.1109/78.765122","mag":"2160415468"},"language":"en","primary_location":{"id":"doi:10.1109/78.765122","is_oa":false,"landing_page_url":"https://doi.org/10.1109/78.765122","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"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 Transactions on Signal Processing","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/A5003112254","display_name":"A. Manikas","orcid":"https://orcid.org/0000-0001-6905-3280"},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"A. Manikas","raw_affiliation_strings":["Communications and Signal Processing Research Section, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, London, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Communications and Signal Processing Research Section, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, London, UK","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048783616","display_name":"C. Proukakis","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"C. Proukakis","raw_affiliation_strings":["Communications and Signal Processing Research Section, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, London, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Communications and Signal Processing Research Section, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, London, UK","institution_ids":["https://openalex.org/I47508984"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5026328943","display_name":"V. Lefkaditis","orcid":null},"institutions":[{"id":"https://openalex.org/I47508984","display_name":"Imperial College London","ror":"https://ror.org/041kmwe10","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"V. Lefkaditis","raw_affiliation_strings":["Communications and Signal Processing Research Section, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, London, UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Communications and Signal Processing Research Section, Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, London, UK","institution_ids":["https://openalex.org/I47508984"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I47508984"],"apc_list":null,"apc_paid":null,"fwci":80.2334,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.99690147,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"47","issue":"6","first_page":"1532","last_page":"1541"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11946","display_name":"Antenna Design and Optimization","score":0.9994999766349792,"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/T11946","display_name":"Antenna Design and Optimization","score":0.9994999766349792,"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/T11870","display_name":"Structural Analysis and Optimization","score":0.9882000088691711,"subfield":{"id":"https://openalex.org/subfields/2205","display_name":"Civil and Structural 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/T12450","display_name":"Radio Astronomy Observations and Technology","score":0.9868999719619751,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/azimuth","display_name":"Azimuth","score":0.914799690246582},{"id":"https://openalex.org/keywords/planar","display_name":"Planar","score":0.7183972597122192},{"id":"https://openalex.org/keywords/parametrization","display_name":"Parametrization (atmospheric modeling)","score":0.7149662971496582},{"id":"https://openalex.org/keywords/generator","display_name":"Generator (circuit theory)","score":0.684049665927887},{"id":"https://openalex.org/keywords/planar-array","display_name":"Planar array","score":0.6077259182929993},{"id":"https://openalex.org/keywords/elevation","display_name":"Elevation (ballistics)","score":0.5973502993583679},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5087962746620178},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4492102265357971},{"id":"https://openalex.org/keywords/elevation-angle","display_name":"Elevation angle","score":0.4147118031978607},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.39394137263298035},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3604857623577118},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.23542001843452454},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.19554412364959717},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.16295650601387024},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.11498227715492249},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.10040661692619324},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.07104593515396118}],"concepts":[{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.914799690246582},{"id":"https://openalex.org/C134786449","wikidata":"https://www.wikidata.org/wiki/Q3391255","display_name":"Planar","level":2,"score":0.7183972597122192},{"id":"https://openalex.org/C202887219","wikidata":"https://www.wikidata.org/wiki/Q3895221","display_name":"Parametrization (atmospheric modeling)","level":3,"score":0.7149662971496582},{"id":"https://openalex.org/C2780992000","wikidata":"https://www.wikidata.org/wiki/Q17016113","display_name":"Generator (circuit theory)","level":3,"score":0.684049665927887},{"id":"https://openalex.org/C2775980084","wikidata":"https://www.wikidata.org/wiki/Q4771249","display_name":"Planar array","level":2,"score":0.6077259182929993},{"id":"https://openalex.org/C37054046","wikidata":"https://www.wikidata.org/wiki/Q641888","display_name":"Elevation (ballistics)","level":2,"score":0.5973502993583679},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5087962746620178},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4492102265357971},{"id":"https://openalex.org/C2986230362","wikidata":"https://www.wikidata.org/wiki/Q203218","display_name":"Elevation angle","level":3,"score":0.4147118031978607},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.39394137263298035},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3604857623577118},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.23542001843452454},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.19554412364959717},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.16295650601387024},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.11498227715492249},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.10040661692619324},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.07104593515396118},{"id":"https://openalex.org/C74902906","wikidata":"https://www.wikidata.org/wiki/Q1190858","display_name":"Radiative transfer","level":2,"score":0.0},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","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}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/78.765122","is_oa":false,"landing_page_url":"https://doi.org/10.1109/78.765122","pdf_url":null,"source":{"id":"https://openalex.org/S168680287","display_name":"IEEE Transactions on Signal Processing","issn_l":"1053-587X","issn":["1053-587X","1941-0476"],"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 Transactions on Signal Processing","raw_type":"journal-article"},{"id":"pmh:oai:spiral.imperial.ac.uk:10044/1/943","is_oa":false,"landing_page_url":"http://hdl.handle.net/10044/1/943","pdf_url":null,"source":{"id":"https://openalex.org/S4306401396","display_name":"Spiral (Imperial College London)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I47508984","host_organization_name":"Imperial College London","host_organization_lineage":["https://openalex.org/I47508984"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"1541","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1911857725","https://openalex.org/W1998018147","https://openalex.org/W2018681950","https://openalex.org/W2050113095","https://openalex.org/W2119360526","https://openalex.org/W2141297698","https://openalex.org/W2143330906","https://openalex.org/W2143989619","https://openalex.org/W2160120432","https://openalex.org/W2170553224","https://openalex.org/W2171534412","https://openalex.org/W4251388285"],"related_works":["https://openalex.org/W2072356891","https://openalex.org/W2348542094","https://openalex.org/W2569604092","https://openalex.org/W2773932882","https://openalex.org/W2165157405","https://openalex.org/W2097842859","https://openalex.org/W2804688709","https://openalex.org/W2081270133","https://openalex.org/W2089165520","https://openalex.org/W2875660545"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"a":[3,37],"novel":[4],"approach":[5,21],"is":[6,22,75],"proposed":[7,49],"for":[8,17,39,50],"the":[9,25,69],"calculation":[10],"of":[11,15,27,57,59,71,86],"ambiguous":[12,54,72],"generator":[13,55,73],"sets":[14,56],"directions":[16,58,85],"planar":[18,41],"arrays.":[19,52],"This":[20],"based":[23],"on":[24],"concept":[26,70],"hyperhelical":[28],"curves":[29],"and":[30,46,62,68,89],"their":[31],"equivalent":[32],"linear":[33,51],"arrays,":[34],"which":[35],"provide":[36],"vehicle":[38],"investigating":[40],"array":[42],"ambiguities":[43,82],"by":[44,78],"adopting":[45],"extending":[47],"techniques":[48],"Thus,":[53],"constant":[60],"azimuth":[61,88],"different":[63,87,90],"elevation":[64,91],"are":[65,92],"initially":[66],"calculated,":[67],"lines":[74],"introduced.":[76],"Then,":[77],"using":[79],"cone-angle":[80],"parametrization,":[81],"associated":[83],"with":[84],"investigated.":[93]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2015,"cited_by_count":2},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}