{"id":"https://openalex.org/W4416751013","doi":"https://doi.org/10.1109/sips66314.2025.11261240","title":"Ziv-Zakai Bound for Wideband Two-Dimensional DOA Estimation with a Single Source","display_name":"Ziv-Zakai Bound for Wideband Two-Dimensional DOA Estimation with a Single Source","publication_year":2025,"publication_date":"2025-11-01","ids":{"openalex":"https://openalex.org/W4416751013","doi":"https://doi.org/10.1109/sips66314.2025.11261240"},"language":null,"primary_location":{"id":"doi:10.1109/sips66314.2025.11261240","is_oa":false,"landing_page_url":"https://doi.org/10.1109/sips66314.2025.11261240","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE Workshop on Signal Processing Systems (SiPS)","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/A5031341038","display_name":"Yizhe Wang","orcid":"https://orcid.org/0000-0003-2757-8964"},"institutions":[{"id":"https://openalex.org/I125839683","display_name":"Beijing Institute of Technology","ror":"https://ror.org/01skt4w74","country_code":"CN","type":"education","lineage":["https://openalex.org/I125839683","https://openalex.org/I890469752"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yizhe Wang","raw_affiliation_strings":["Beijing Institute of Technology,School of Information and Electronics,Beijing,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Institute of Technology,School of Information and Electronics,Beijing,China","institution_ids":["https://openalex.org/I125839683"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110029669","display_name":"Qining Feng","orcid":null},"institutions":[{"id":"https://openalex.org/I4210119087","display_name":"North China Institute of Aerospace Engineering","ror":"https://ror.org/02m7msy24","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210119087"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qining Feng","raw_affiliation_strings":["North China Institute of Aerospace Engineering,Langfang,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"North China Institute of Aerospace Engineering,Langfang,China","institution_ids":["https://openalex.org/I4210119087"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071959276","display_name":"Qing Shen","orcid":"https://orcid.org/0000-0002-8295-0442"},"institutions":[{"id":"https://openalex.org/I125839683","display_name":"Beijing Institute of Technology","ror":"https://ror.org/01skt4w74","country_code":"CN","type":"education","lineage":["https://openalex.org/I125839683","https://openalex.org/I890469752"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qing Shen","raw_affiliation_strings":["Beijing Institute of Technology,School of Information and Electronics,Beijing,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Institute of Technology,School of Information and Electronics,Beijing,China","institution_ids":["https://openalex.org/I125839683"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062908102","display_name":"Wei Liu","orcid":"https://orcid.org/0000-0003-2968-2888"},"institutions":[{"id":"https://openalex.org/I14243506","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98","country_code":"HK","type":"education","lineage":["https://openalex.org/I14243506"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Wei Liu","raw_affiliation_strings":["Hong Kong Polytechnic University,Department of Electrical and Electronic Engineering,Kowloon,Hong Kong"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Hong Kong Polytechnic University,Department of Electrical and Electronic Engineering,Kowloon,Hong Kong","institution_ids":["https://openalex.org/I14243506"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5088474477","display_name":"Hantian Wu","orcid":"https://orcid.org/0000-0002-2304-6437"},"institutions":[{"id":"https://openalex.org/I125839683","display_name":"Beijing Institute of Technology","ror":"https://ror.org/01skt4w74","country_code":"CN","type":"education","lineage":["https://openalex.org/I125839683","https://openalex.org/I890469752"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hantian Wu","raw_affiliation_strings":["Beijing Institute of Technology,School of Information and Electronics,Beijing,China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Institute of Technology,School of Information and Electronics,Beijing,China","institution_ids":["https://openalex.org/I125839683"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"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":0.39034002,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10931","display_name":"Direction-of-Arrival Estimation Techniques","score":0.9697999954223633,"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/T10931","display_name":"Direction-of-Arrival Estimation Techniques","score":0.9697999954223633,"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/T10891","display_name":"Radar Systems and Signal Processing","score":0.007199999876320362,"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/T10860","display_name":"Speech and Audio Processing","score":0.006500000134110451,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/wideband","display_name":"Wideband","score":0.8210999965667725},{"id":"https://openalex.org/keywords/upper-and-lower-bounds","display_name":"Upper and lower bounds","score":0.6699000000953674},{"id":"https://openalex.org/keywords/covariance","display_name":"Covariance","score":0.6509000062942505},{"id":"https://openalex.org/keywords/benchmark","display_name":"Benchmark (surveying)","score":0.6177999973297119},{"id":"https://openalex.org/keywords/estimation-theory","display_name":"Estimation theory","score":0.4327000081539154},{"id":"https://openalex.org/keywords/estimation","display_name":"Estimation","score":0.37950000166893005},{"id":"https://openalex.org/keywords/covariance-matrix","display_name":"Covariance matrix","score":0.36910000443458557}],"concepts":[{"id":"https://openalex.org/C2780202535","wikidata":"https://www.wikidata.org/wiki/Q4524457","display_name":"Wideband","level":2,"score":0.8210999965667725},{"id":"https://openalex.org/C77553402","wikidata":"https://www.wikidata.org/wiki/Q13222579","display_name":"Upper and lower bounds","level":2,"score":0.6699000000953674},{"id":"https://openalex.org/C178650346","wikidata":"https://www.wikidata.org/wiki/Q201984","display_name":"Covariance","level":2,"score":0.6509000062942505},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.6177999973297119},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5425999760627747},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.49000000953674316},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4772000014781952},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.4327000081539154},{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.37950000166893005},{"id":"https://openalex.org/C185142706","wikidata":"https://www.wikidata.org/wiki/Q1134404","display_name":"Covariance matrix","level":2,"score":0.36910000443458557},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.3653999865055084},{"id":"https://openalex.org/C4978587","wikidata":"https://www.wikidata.org/wiki/Q1138810","display_name":"Cram\u00e9r\u2013Rao bound","level":3,"score":0.3472000062465668},{"id":"https://openalex.org/C173391809","wikidata":"https://www.wikidata.org/wiki/Q2740189","display_name":"Wideband audio","level":5,"score":0.3368000090122223},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.3066999912261963},{"id":"https://openalex.org/C49781872","wikidata":"https://www.wikidata.org/wiki/Q1045555","display_name":"Maximum likelihood","level":2,"score":0.2953000068664551},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.29330000281333923},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.2874000072479248},{"id":"https://openalex.org/C137250428","wikidata":"https://www.wikidata.org/wiki/Q5178897","display_name":"Covariance function","level":3,"score":0.2825999855995178},{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.266400009393692}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/sips66314.2025.11261240","is_oa":false,"landing_page_url":"https://doi.org/10.1109/sips66314.2025.11261240","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE Workshop on Signal Processing Systems (SiPS)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320322598","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1967845942","https://openalex.org/W2024973676","https://openalex.org/W2119227377","https://openalex.org/W2165709293","https://openalex.org/W2169729253","https://openalex.org/W2524449277","https://openalex.org/W2554305184","https://openalex.org/W2561126956","https://openalex.org/W2965003439","https://openalex.org/W3003728756","https://openalex.org/W3088245127","https://openalex.org/W3169405625","https://openalex.org/W4312361655","https://openalex.org/W4390776208","https://openalex.org/W4392251600","https://openalex.org/W4393139954","https://openalex.org/W4395029268","https://openalex.org/W4407403187","https://openalex.org/W4408358248"],"related_works":[],"abstract_inverted_index":{"The":[0,20],"Ziv-Zakai":[1],"bound":[2,55],"(ZZB)":[3],"for":[4,28],"two-dimensional":[5],"(2D)":[6],"wideband":[7,30],"direction-of-arrival":[8],"(DOA)":[9],"estimation":[10,69],"of":[11,107],"a":[12,65,96],"single":[13],"source":[14],"under":[15],"subband":[16],"model":[17],"is":[18,71],"investigated.":[19],"regularity":[21],"conditions":[22],"and":[23,79,109],"the":[24,41,49,53,60,68,74,84,92,101],"minimum":[25],"error":[26,70],"probability":[27],"2-D":[29],"ZZB":[31,51,81,94],"are":[32],"derived":[33,50,93],"first,":[34],"along":[35],"with":[36,44,64],"its":[37],"closed-form":[38],"expression.":[39],"In":[40,57],"asymptotic":[42],"region":[43,63],"high":[45],"signal-to-noise":[46],"ratio":[47],"(SNR),":[48],"approaches":[52],"Cram\u00e9r-Rao":[54],"(CRB).":[56],"contrast,":[58],"in":[59,105],"prior":[61,76,85],"performance":[62,98],"low":[66],"SNR,":[67],"distributed":[72],"throughout":[73],"entire":[75],"parameter":[77],"space,":[78],"thus":[80],"depends":[82],"on":[83],"covariance":[86],"matrix.":[87],"Simulation":[88],"results":[89],"indicate":[90],"that":[91],"provides":[95],"better":[97],"benchmark":[99],"than":[100],"widely":[102],"accepted":[103],"CRB":[104],"terms":[106],"tightness":[108],"effectiveness.":[110]},"counts_by_year":[],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-11-28T00:00:00"}