{"id":"https://openalex.org/W4402215110","doi":"https://doi.org/10.1109/lgrs.2024.3454489","title":"An NCS-Based WLS Estimator for Airborne Microwave Photonic SAR Autofocus","display_name":"An NCS-Based WLS Estimator for Airborne Microwave Photonic SAR Autofocus","publication_year":2024,"publication_date":"2024-01-01","ids":{"openalex":"https://openalex.org/W4402215110","doi":"https://doi.org/10.1109/lgrs.2024.3454489"},"language":"en","primary_location":{"id":"doi:10.1109/lgrs.2024.3454489","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2024.3454489","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"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 Geoscience and Remote Sensing Letters","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/A5060268032","display_name":"Jianlai Chen","orcid":"https://orcid.org/0000-0002-8639-9336"},"institutions":[{"id":"https://openalex.org/I139660479","display_name":"Central South University","ror":"https://ror.org/00f1zfq44","country_code":"CN","type":"education","lineage":["https://openalex.org/I139660479"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jianlai Chen","raw_affiliation_strings":["School of Automation, Central South University, Changsha, China"],"raw_orcid":"https://orcid.org/0000-0002-8639-9336","affiliations":[{"raw_affiliation_string":"School of Automation, Central South University, Changsha, China","institution_ids":["https://openalex.org/I139660479"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101374293","display_name":"Rongqi Xiong","orcid":null},"institutions":[{"id":"https://openalex.org/I139660479","display_name":"Central South University","ror":"https://ror.org/00f1zfq44","country_code":"CN","type":"education","lineage":["https://openalex.org/I139660479"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Rongqi Xiong","raw_affiliation_strings":["School of Automation, Central South University, Changsha, China"],"raw_orcid":"https://orcid.org/0009-0008-6174-6996","affiliations":[{"raw_affiliation_string":"School of Automation, Central South University, Changsha, China","institution_ids":["https://openalex.org/I139660479"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017762196","display_name":"Nan Jiang","orcid":"https://orcid.org/0000-0003-2299-1717"},"institutions":[{"id":"https://openalex.org/I139660479","display_name":"Central South University","ror":"https://ror.org/00f1zfq44","country_code":"CN","type":"education","lineage":["https://openalex.org/I139660479"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Nan Jiang","raw_affiliation_strings":["School of Automation, Central South University, Changsha, China"],"raw_orcid":"https://orcid.org/0000-0003-2299-1717","affiliations":[{"raw_affiliation_string":"School of Automation, Central South University, Changsha, China","institution_ids":["https://openalex.org/I139660479"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5087493208","display_name":"Gang Xu","orcid":"https://orcid.org/0000-0001-9875-051X"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Gang Xu","raw_affiliation_strings":["State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, China"],"raw_orcid":"https://orcid.org/0000-0001-9875-051X","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Millimeter Waves, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067279461","display_name":"Ruoming Li","orcid":"https://orcid.org/0000-0003-1783-6798"},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210137199","display_name":"Aerospace Information Research Institute","ror":"https://ror.org/0419fj215","country_code":"CN","type":"education","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210137199"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ruoming Li","raw_affiliation_strings":["National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0003-1783-6798","affiliations":[{"raw_affiliation_string":"National Key Laboratory of Microwave Imaging Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China","institution_ids":["https://openalex.org/I4210137199","https://openalex.org/I19820366"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021408538","display_name":"Mengdao Xing","orcid":"https://orcid.org/0000-0002-4084-0915"},"institutions":[{"id":"https://openalex.org/I149594827","display_name":"Xidian University","ror":"https://ror.org/05s92vm98","country_code":"CN","type":"education","lineage":["https://openalex.org/I149594827"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mengdao Xing","raw_affiliation_strings":["National Laboratory of Radar Signal Processing, Xidian University, Xi&#x2019;an, China"],"raw_orcid":"https://orcid.org/0000-0002-4084-0915","affiliations":[{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi&#x2019;an, China","institution_ids":["https://openalex.org/I149594827"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5060268032"],"corresponding_institution_ids":["https://openalex.org/I139660479"],"apc_list":null,"apc_paid":null,"fwci":4.0983,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.94054606,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":95,"max":98},"biblio":{"volume":"21","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9975000023841858,"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/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9975000023841858,"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/T10767","display_name":"Advanced Photonic Communication Systems","score":0.9926999807357788,"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/T10891","display_name":"Radar Systems and Signal Processing","score":0.9872999787330627,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/autofocus","display_name":"Autofocus","score":0.8754574060440063},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.6810204982757568},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.6405539512634277},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5182766318321228},{"id":"https://openalex.org/keywords/photonics","display_name":"Photonics","score":0.5016582012176514},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.4693136215209961},{"id":"https://openalex.org/keywords/microwave","display_name":"Microwave","score":0.4255063831806183},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.2800803482532501},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.26143184304237366},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.1978864073753357},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.16993939876556396},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.15453055500984192},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.13865643739700317},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.06788048148155212},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.06661993265151978}],"concepts":[{"id":"https://openalex.org/C103764139","wikidata":"https://www.wikidata.org/wiki/Q210008","display_name":"Autofocus","level":3,"score":0.8754574060440063},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.6810204982757568},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.6405539512634277},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5182766318321228},{"id":"https://openalex.org/C20788544","wikidata":"https://www.wikidata.org/wiki/Q467054","display_name":"Photonics","level":2,"score":0.5016582012176514},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.4693136215209961},{"id":"https://openalex.org/C44838205","wikidata":"https://www.wikidata.org/wiki/Q127995","display_name":"Microwave","level":2,"score":0.4255063831806183},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.2800803482532501},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.26143184304237366},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.1978864073753357},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.16993939876556396},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.15453055500984192},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.13865643739700317},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.06788048148155212},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.06661993265151978}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lgrs.2024.3454489","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2024.3454489","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"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 Geoscience and Remote Sensing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.6299999952316284}],"awards":[{"id":"https://openalex.org/G6792400829","display_name":null,"funder_award_id":"62271510","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1998292730","https://openalex.org/W2002740413","https://openalex.org/W2143070649","https://openalex.org/W2740900343","https://openalex.org/W2768563621","https://openalex.org/W2801065766","https://openalex.org/W2801114666","https://openalex.org/W2912838597","https://openalex.org/W3021393652","https://openalex.org/W4318148687","https://openalex.org/W4321021829","https://openalex.org/W4399426471"],"related_works":["https://openalex.org/W2059320410","https://openalex.org/W1749329330","https://openalex.org/W2763904007","https://openalex.org/W2083992722","https://openalex.org/W1755453833","https://openalex.org/W2054220418","https://openalex.org/W3007803710","https://openalex.org/W2557037589","https://openalex.org/W2065642904","https://openalex.org/W2040249954"],"abstract_inverted_index":{"The":[0,91,140],"motion":[1,21,28,35],"error":[2,22,29,36],"of":[3,68,118,135,148],"airborne":[4],"microwave":[5],"photonic":[6],"synthetic":[7],"aperture":[8],"radar":[9],"(SAR)":[10],"has":[11],"2-D":[12],"spatial":[13,19,26],"variation":[14],"characteristics,":[15],"and":[16,24,54,101,120],"the":[17,34,39,42,52,55,60,66,88,98,107,115,123,133,146,149],"range":[18],"variant":[20,27],"(RVE)":[23],"azimuth":[25,61],"(AVE)":[30],"significantly":[31,95],"interplay":[32],"during":[33],"estimation.":[37],"For":[38],"RVE":[40,102],"estimation,":[41],"standard":[43,108],"weighted":[44],"least":[45],"square":[46],"(WLS)":[47],"algorithms":[48,64],"are":[49],"susceptible":[50],"to":[51,86,113,131],"AVE":[53,92,119],"moving":[56,121],"targets.":[57],"In":[58,111],"addition,":[59],"subimage-based":[62],"WLS":[63,77,109],"face":[65],"problem":[67],"dominant":[69,129],"points":[70,130],"decreasing":[71],"dramatically.":[72],"This":[73],"letter":[74],"proposes":[75],"a":[76],"estimation":[78],"kernel":[79],"based":[80],"on":[81],"nonlinear":[82],"chirp":[83],"scaling":[84],"(NCS)":[85],"address":[87],"issues":[89],"above.":[90],"is":[93,103],"first":[94],"corrected":[96],"by":[97],"NCS":[99],"processing,":[100],"subsequently":[104],"estimated":[105],"using":[106],"kernel.":[110],"addition":[112],"eliminating":[114],"adverse":[116],"effects":[117],"targets,":[122],"proposed":[124,150],"method":[125],"can":[126],"retain":[127],"sufficient":[128],"ensure":[132],"accuracy":[134],"phase":[136],"gradient":[137],"autofocus":[138],"(PGA).":[139],"measured":[141],"data":[142],"processing":[143],"results":[144],"verify":[145],"effectiveness":[147],"method.":[151]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
