{"id":"https://openalex.org/W3129274344","doi":"https://doi.org/10.1109/jstars.2021.3061430","title":"A Fast Sparse Azimuth Super-Resolution Imaging Method of Real Aperture Radar Based on Iterative Reweighted Least Squares With Linear Sketching","display_name":"A Fast Sparse Azimuth Super-Resolution Imaging Method of Real Aperture Radar Based on Iterative Reweighted Least Squares With Linear Sketching","publication_year":2021,"publication_date":"2021-01-01","ids":{"openalex":"https://openalex.org/W3129274344","doi":"https://doi.org/10.1109/jstars.2021.3061430","mag":"3129274344"},"language":"en","primary_location":{"id":"doi:10.1109/jstars.2021.3061430","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2021.3061430","pdf_url":null,"source":{"id":"https://openalex.org/S117727964","display_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","issn_l":"1939-1404","issn":["1939-1404","2151-1535"],"is_oa":true,"is_in_doaj":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1109/jstars.2021.3061430","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5013652910","display_name":"Xingyu Tuo","orcid":"https://orcid.org/0000-0003-0118-2240"},"institutions":[{"id":"https://openalex.org/I150229711","display_name":"University of Electronic Science and Technology of China","ror":"https://ror.org/04qr3zq92","country_code":"CN","type":"education","lineage":["https://openalex.org/I150229711"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xingyu Tuo","raw_affiliation_strings":["ORCiD","School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China"],"affiliations":[{"raw_affiliation_string":"ORCiD","institution_ids":[]},{"raw_affiliation_string":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China","institution_ids":["https://openalex.org/I150229711"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100343725","display_name":"Yin Zhang","orcid":"https://orcid.org/0000-0002-6761-2269"},"institutions":[{"id":"https://openalex.org/I150229711","display_name":"University of Electronic Science and Technology of China","ror":"https://ror.org/04qr3zq92","country_code":"CN","type":"education","lineage":["https://openalex.org/I150229711"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yin Zhang","raw_affiliation_strings":["ORCiD","School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China"],"affiliations":[{"raw_affiliation_string":"ORCiD","institution_ids":[]},{"raw_affiliation_string":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China","institution_ids":["https://openalex.org/I150229711"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027924825","display_name":"Yulin Huang","orcid":"https://orcid.org/0000-0003-3930-9323"},"institutions":[{"id":"https://openalex.org/I150229711","display_name":"University of Electronic Science and Technology of China","ror":"https://ror.org/04qr3zq92","country_code":"CN","type":"education","lineage":["https://openalex.org/I150229711"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yulin Huang","raw_affiliation_strings":["School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China","ORCiD"],"affiliations":[{"raw_affiliation_string":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China","institution_ids":["https://openalex.org/I150229711"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100660972","display_name":"Jianyu Yang","orcid":"https://orcid.org/0000-0002-4726-8384"},"institutions":[{"id":"https://openalex.org/I150229711","display_name":"University of Electronic Science and Technology of China","ror":"https://ror.org/04qr3zq92","country_code":"CN","type":"education","lineage":["https://openalex.org/I150229711"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jianyu Yang","raw_affiliation_strings":["ORCiD","School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China"],"affiliations":[{"raw_affiliation_string":"ORCiD","institution_ids":[]},{"raw_affiliation_string":"School of Information and Communication Engineering, University of Electronic Science and Technology of China, Chengdu, China","institution_ids":["https://openalex.org/I150229711"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5013652910"],"corresponding_institution_ids":["https://openalex.org/I150229711"],"apc_list":{"value":1250,"currency":"USD","value_usd":1250},"apc_paid":{"value":1250,"currency":"USD","value_usd":1250},"fwci":2.1361,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.85533319,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":96,"max":99},"biblio":{"volume":"14","issue":null,"first_page":"2928","last_page":"2941"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9998000264167786,"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"}},"topics":[{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9998000264167786,"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"}},{"id":"https://openalex.org/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9997000098228455,"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/T11739","display_name":"Microwave Imaging and Scattering Analysis","score":0.9991999864578247,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/azimuth","display_name":"Azimuth","score":0.6606931686401367},{"id":"https://openalex.org/keywords/iteratively-reweighted-least-squares","display_name":"Iteratively reweighted least squares","score":0.6220181584358215},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6208160519599915},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.5812849998474121},{"id":"https://openalex.org/keywords/radar-imaging","display_name":"Radar imaging","score":0.5797052979469299},{"id":"https://openalex.org/keywords/least-squares-function-approximation","display_name":"Least-squares function approximation","score":0.4860978126525879},{"id":"https://openalex.org/keywords/iterative-method","display_name":"Iterative method","score":0.48467305302619934},{"id":"https://openalex.org/keywords/side-looking-airborne-radar","display_name":"Side looking airborne radar","score":0.47472628951072693},{"id":"https://openalex.org/keywords/inverse-synthetic-aperture-radar","display_name":"Inverse synthetic aperture radar","score":0.4529598355293274},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.43791574239730835},{"id":"https://openalex.org/keywords/superresolution","display_name":"Superresolution","score":0.4282221794128418},{"id":"https://openalex.org/keywords/iterative-reconstruction","display_name":"Iterative reconstruction","score":0.4210905134677887},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4126741588115692},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.39764827489852905},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.3457757234573364},{"id":"https://openalex.org/keywords/non-linear-least-squares","display_name":"Non-linear least squares","score":0.334962397813797},{"id":"https://openalex.org/keywords/continuous-wave-radar","display_name":"Continuous-wave radar","score":0.22466835379600525},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.20685184001922607},{"id":"https://openalex.org/keywords/estimation-theory","display_name":"Estimation theory","score":0.20407810807228088},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.20066246390342712},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.19971895217895508},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10967352986335754},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.09166008234024048}],"concepts":[{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.6606931686401367},{"id":"https://openalex.org/C126090379","wikidata":"https://www.wikidata.org/wiki/Q6094424","display_name":"Iteratively reweighted least squares","level":4,"score":0.6220181584358215},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6208160519599915},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.5812849998474121},{"id":"https://openalex.org/C10929652","wikidata":"https://www.wikidata.org/wiki/Q7279985","display_name":"Radar imaging","level":3,"score":0.5797052979469299},{"id":"https://openalex.org/C9936470","wikidata":"https://www.wikidata.org/wiki/Q6510405","display_name":"Least-squares function approximation","level":3,"score":0.4860978126525879},{"id":"https://openalex.org/C159694833","wikidata":"https://www.wikidata.org/wiki/Q2321565","display_name":"Iterative method","level":2,"score":0.48467305302619934},{"id":"https://openalex.org/C62282787","wikidata":"https://www.wikidata.org/wiki/Q831483","display_name":"Side looking airborne radar","level":5,"score":0.47472628951072693},{"id":"https://openalex.org/C109094680","wikidata":"https://www.wikidata.org/wiki/Q6060432","display_name":"Inverse synthetic aperture radar","level":4,"score":0.4529598355293274},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.43791574239730835},{"id":"https://openalex.org/C141239990","wikidata":"https://www.wikidata.org/wiki/Q957423","display_name":"Superresolution","level":3,"score":0.4282221794128418},{"id":"https://openalex.org/C141379421","wikidata":"https://www.wikidata.org/wiki/Q6094427","display_name":"Iterative reconstruction","level":2,"score":0.4210905134677887},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4126741588115692},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.39764827489852905},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.3457757234573364},{"id":"https://openalex.org/C45923927","wikidata":"https://www.wikidata.org/wiki/Q3319230","display_name":"Non-linear least squares","level":3,"score":0.334962397813797},{"id":"https://openalex.org/C59584813","wikidata":"https://www.wikidata.org/wiki/Q1029234","display_name":"Continuous-wave radar","level":4,"score":0.22466835379600525},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.20685184001922607},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.20407810807228088},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.20066246390342712},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.19971895217895508},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10967352986335754},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.09166008234024048},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/jstars.2021.3061430","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2021.3061430","pdf_url":null,"source":{"id":"https://openalex.org/S117727964","display_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","issn_l":"1939-1404","issn":["1939-1404","2151-1535"],"is_oa":true,"is_in_doaj":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:048f2615bc3f47b09cf673793ca71d1f","is_oa":true,"landing_page_url":"https://doaj.org/article/048f2615bc3f47b09cf673793ca71d1f","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 2928-2941 (2021)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/jstars.2021.3061430","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2021.3061430","pdf_url":null,"source":{"id":"https://openalex.org/S117727964","display_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","issn_l":"1939-1404","issn":["1939-1404","2151-1535"],"is_oa":true,"is_in_doaj":true,"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":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G3873326007","display_name":null,"funder_award_id":"61901090","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7641405492","display_name":null,"funder_award_id":"61901092","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"},{"id":"https://openalex.org/F4320329881","display_name":"Collaborative Innovation Center of Information Sensing and Understanding, Xidian University","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":52,"referenced_works":["https://openalex.org/W322738573","https://openalex.org/W783608400","https://openalex.org/W1749681071","https://openalex.org/W1968735445","https://openalex.org/W1979817396","https://openalex.org/W1980364018","https://openalex.org/W1990381576","https://openalex.org/W1995190553","https://openalex.org/W2017107531","https://openalex.org/W2028598757","https://openalex.org/W2042428174","https://openalex.org/W2056226601","https://openalex.org/W2061577342","https://openalex.org/W2061617250","https://openalex.org/W2064777331","https://openalex.org/W2064980127","https://openalex.org/W2068274103","https://openalex.org/W2068859154","https://openalex.org/W2076968919","https://openalex.org/W2082476922","https://openalex.org/W2100556411","https://openalex.org/W2112258609","https://openalex.org/W2112855412","https://openalex.org/W2117756735","https://openalex.org/W2119499160","https://openalex.org/W2119667497","https://openalex.org/W2140122025","https://openalex.org/W2145096794","https://openalex.org/W2157988812","https://openalex.org/W2159193954","https://openalex.org/W2164452299","https://openalex.org/W2168745297","https://openalex.org/W2190662802","https://openalex.org/W2241490281","https://openalex.org/W2336963817","https://openalex.org/W2488424576","https://openalex.org/W2508393166","https://openalex.org/W2562531196","https://openalex.org/W2585512539","https://openalex.org/W2594817340","https://openalex.org/W2754841153","https://openalex.org/W2946683545","https://openalex.org/W2950020196","https://openalex.org/W2965024619","https://openalex.org/W2970515213","https://openalex.org/W2981024902","https://openalex.org/W3005369213","https://openalex.org/W3094439398","https://openalex.org/W3098324794","https://openalex.org/W3112410551","https://openalex.org/W6767546602","https://openalex.org/W6910505072"],"related_works":["https://openalex.org/W4388207922","https://openalex.org/W1994788526","https://openalex.org/W2108352898","https://openalex.org/W2112228652","https://openalex.org/W2108697546","https://openalex.org/W2383271330","https://openalex.org/W2758958237","https://openalex.org/W1915418828","https://openalex.org/W3144639622","https://openalex.org/W1809551201"],"abstract_inverted_index":{"It":[0],"is":[1,55,59,169],"greatly":[2],"significant":[3],"to":[4,11,61,126,159,171,196],"achieve":[5,160],"radar":[6,26,39],"forward-looking":[7,22,34],"region":[8],"imaging.":[9],"Due":[10],"the":[12,48,67,72,74,94,112,127,191,198,204,212,217,225],"limitation":[13],"of":[14,53,71,132,144,164,203,236],"phase":[15],"ambiguity":[16],"and":[17,27,110,130,175,220],"small":[18],"Doppler":[19,28],"gradient":[20],"in":[21,114],"region,":[23],"synthetic":[24],"aperture":[25,38],"beam":[29],"sharpening":[30],"cannot":[31],"work":[32],"for":[33],"imaging,":[35],"while":[36],"real":[37],"(RAR)":[40],"has":[41],"arbitrary":[42],"imaging":[43,142,163,237],"geometry.":[44],"Nevertheless,":[45],"restricted":[46],"by":[47,100,186],"antenna":[49,176],"aperture,":[50],"azimuth":[51,64,140],"resolution":[52],"RAR":[54,145],"coarse,":[56],"super-resolution":[57,75,141,162],"technology":[58],"required":[60],"improve":[62],"its":[63],"resolution.":[65],"Exploiting":[66],"sparse":[68],"prior":[69],"information":[70],"target,":[73],"problem":[76,86,99],"can":[77,91,207,228],"be":[78,209],"transformed":[79],"into":[80,179],"an":[81,187],"<inline-formula><tex-math":[82,95,102,107],"notation=\"LaTeX\">$L_1$</tex-math></inline-formula>":[83,96,103],"norm":[84,97,104,109],"minimization":[85,98],"mathematically.":[87],"Iterative":[88],"reweighted":[89,106,149],"algorithm":[90,227],"effectively":[92],"solve":[93],"replacing":[101],"with":[105,153],"notation=\"LaTeX\">$L_2$</tex-math></inline-formula>":[108],"computing":[111],"weight":[113],"each":[115],"iteration.":[116],"However,":[117],"it":[118],"suffers":[119],"from":[120],"a":[121,138,230],"large":[122,133],"computational":[123],"load":[124],"due":[125],"repeated":[128],"multiplications":[129],"inversions":[131],"matrices.":[134],"In":[135],"this":[136],"article,":[137],"fast":[139,161],"method":[143],"based":[146],"on":[147,211],"iterative":[148],"least":[150],"squares":[151],"(IRLS)":[152],"linear":[154],"sketching":[155],"(LS)":[156],"was":[157,194],"proposed":[158,226],"RAR.":[165],"The":[166],"LS":[167],"theory":[168],"employed":[170],"compress":[172],"echo":[173],"matrix":[174,178],"measurement":[177],"much":[180],"smaller":[181,213],"matrices":[182],"via":[183],"multiplying":[184],"them":[185],"embedded":[188],"matrix.":[189],"Then,":[190],"IRLS":[192],"solver":[193],"utilized":[195],"address":[197],"reconstructed":[199],"objective":[200],"function.":[201],"Much":[202],"expensive":[205],"computation":[206],"then":[208],"performed":[210],"matrices,":[214],"thereby":[215],"accelerating":[216],"algorithm.":[218],"Simulations":[219],"experimental":[221],"data":[222],"prove":[223],"that":[224],"offer":[229],"time":[231],"complexity":[232],"reduction":[233],"without":[234],"loss":[235],"performance.":[238]},"counts_by_year":[{"year":2025,"cited_by_count":8},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":6}],"updated_date":"2026-04-18T07:56:08.524223","created_date":"2025-10-10T00:00:00"}