{"id":"https://openalex.org/W4210367791","doi":"https://doi.org/10.1109/lgrs.2022.3147036","title":"An Ionospheric Phase Screen Projection Method of Phase Gradient Autofocus in Spaceborne SAR","display_name":"An Ionospheric Phase Screen Projection Method of Phase Gradient Autofocus in Spaceborne SAR","publication_year":2022,"publication_date":"2022-01-01","ids":{"openalex":"https://openalex.org/W4210367791","doi":"https://doi.org/10.1109/lgrs.2022.3147036"},"language":"en","primary_location":{"id":"doi:10.1109/lgrs.2022.3147036","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2022.3147036","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/A5006630987","display_name":"Yifei Ji","orcid":"https://orcid.org/0000-0001-6794-5015"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yifei Ji","raw_affiliation_strings":["College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China"],"raw_orcid":"https://orcid.org/0000-0001-6794-5015","affiliations":[{"raw_affiliation_string":"College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046564179","display_name":"Chunrui Yu","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Chunrui Yu","raw_affiliation_strings":["Beijing Institute of Telecommunication Technology, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Institute of Telecommunication Technology, Beijing, China","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090585862","display_name":"Qilei Zhang","orcid":"https://orcid.org/0000-0002-5718-0319"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qilei Zhang","raw_affiliation_strings":["College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China"],"raw_orcid":"https://orcid.org/0000-0002-5718-0319","affiliations":[{"raw_affiliation_string":"College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100631018","display_name":"Zhen Dong","orcid":"https://orcid.org/0000-0002-9917-7628"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhen Dong","raw_affiliation_strings":["College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China"],"raw_orcid":"https://orcid.org/0000-0002-9917-7628","affiliations":[{"raw_affiliation_string":"College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100374669","display_name":"Yongsheng Zhang","orcid":"https://orcid.org/0000-0002-1104-5605"},"institutions":[{"id":"https://openalex.org/I170215575","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11","country_code":"CN","type":"education","lineage":["https://openalex.org/I170215575"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yongsheng Zhang","raw_affiliation_strings":["College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Electronic Science and Technology, National University of Defense Technology (NUDT), Changsha, China","institution_ids":["https://openalex.org/I170215575"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100385398","display_name":"Yanan Wang","orcid":"https://orcid.org/0000-0003-0569-9087"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Yanan Wang","raw_affiliation_strings":["Beijing Institute of Telecommunication Technology, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Institute of Telecommunication Technology, Beijing, China","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":6.6247,"has_fulltext":false,"cited_by_count":12,"citation_normalized_percentile":{"value":0.95827277,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":"19","issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9998000264167786,"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/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9998000264167786,"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/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9998000264167786,"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/T11897","display_name":"Digital Holography and Microscopy","score":0.9861000180244446,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"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/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.799285352230072},{"id":"https://openalex.org/keywords/azimuth","display_name":"Azimuth","score":0.7532297372817993},{"id":"https://openalex.org/keywords/autofocus","display_name":"Autofocus","score":0.7352527379989624},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6527316570281982},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5121128559112549},{"id":"https://openalex.org/keywords/decorrelation","display_name":"Decorrelation","score":0.4734216332435608},{"id":"https://openalex.org/keywords/inverse-synthetic-aperture-radar","display_name":"Inverse synthetic aperture radar","score":0.4576725959777832},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.42424893379211426},{"id":"https://openalex.org/keywords/radar-imaging","display_name":"Radar imaging","score":0.423923522233963},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.35437506437301636},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.2875634431838989},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.24550414085388184},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.17965564131736755},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10433268547058105},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.08003741502761841},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.0648382306098938}],"concepts":[{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.799285352230072},{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.7532297372817993},{"id":"https://openalex.org/C103764139","wikidata":"https://www.wikidata.org/wiki/Q210008","display_name":"Autofocus","level":3,"score":0.7352527379989624},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6527316570281982},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5121128559112549},{"id":"https://openalex.org/C177860922","wikidata":"https://www.wikidata.org/wiki/Q788608","display_name":"Decorrelation","level":2,"score":0.4734216332435608},{"id":"https://openalex.org/C109094680","wikidata":"https://www.wikidata.org/wiki/Q6060432","display_name":"Inverse synthetic aperture radar","level":4,"score":0.4576725959777832},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.42424893379211426},{"id":"https://openalex.org/C10929652","wikidata":"https://www.wikidata.org/wiki/Q7279985","display_name":"Radar imaging","level":3,"score":0.423923522233963},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.35437506437301636},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.2875634431838989},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.24550414085388184},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.17965564131736755},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10433268547058105},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.08003741502761841},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0648382306098938}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lgrs.2022.3147036","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2022.3147036","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":[],"awards":[{"id":"https://openalex.org/G4914005087","display_name":null,"funder_award_id":"62101568","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4978388294","display_name":null,"funder_award_id":"ZK21-06","funder_id":"https://openalex.org/F4320324150","funder_display_name":"National University of Defense Technology"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320324150","display_name":"National University of Defense Technology","ror":"https://ror.org/05d2yfz11"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W357677209","https://openalex.org/W1509682307","https://openalex.org/W1968695384","https://openalex.org/W1988168513","https://openalex.org/W2018311501","https://openalex.org/W2024714333","https://openalex.org/W2048749376","https://openalex.org/W2049980310","https://openalex.org/W2099528392","https://openalex.org/W2118726166","https://openalex.org/W2242862504","https://openalex.org/W2500794697","https://openalex.org/W2515020548","https://openalex.org/W2595576079","https://openalex.org/W2614823128","https://openalex.org/W2744845163","https://openalex.org/W2753712583","https://openalex.org/W2762481804","https://openalex.org/W2944436044","https://openalex.org/W2954481966","https://openalex.org/W2997538880","https://openalex.org/W3005481033","https://openalex.org/W3117756676","https://openalex.org/W3193701485","https://openalex.org/W3198197776","https://openalex.org/W3210013360"],"related_works":["https://openalex.org/W1573254389","https://openalex.org/W1891451863","https://openalex.org/W2735068163","https://openalex.org/W2107730478","https://openalex.org/W2153731056","https://openalex.org/W2745287773","https://openalex.org/W2378149746","https://openalex.org/W2108574463","https://openalex.org/W3034566233","https://openalex.org/W2124087952"],"abstract_inverted_index":{"The":[0,92,140],"phase":[1,34,67,73],"scintillation":[2,33],"induced":[3],"by":[4,104,145],"ionospheric":[5,66],"irregularities":[6],"can":[7,128],"reduce":[8],"azimuth":[9,46],"decorrelation":[10],"and":[11,37,55,84,109,151],"cause":[12],"defocusing":[13],"in":[14,58,89],"the":[15,32,40,45,49,86,98,102,106,116,119,125,133,138,160,163],"low-frequency":[16],"spaceborne":[17],"synthetic":[18],"aperture":[19],"radar":[20],"(SAR)":[21],"imaging.":[22],"Thus,":[23],"it":[24],"demands":[25],"for":[26],"an":[27,65],"autofocus":[28,75],"approach":[29],"to":[30,38,79,96,114,132,135,159],"correct":[31],"error":[35],"(SPE)":[36],"refocus":[39],"deteriorated":[41],"SAR":[42,90,99,120],"image.":[43],"However,":[44],"variation":[47],"of":[48,72,118,162],"SPE":[50,88],"has":[51],"been":[52],"rarely":[53],"considered":[54],"poorly":[56],"tackled":[57],"previous":[59],"research":[60],"studies.":[61],"In":[62],"this":[63,82],"letter,":[64],"screen":[68],"(PS)":[69],"projection":[70],"method":[71],"gradient":[74],"(PSP-PGA)":[76],"is":[77,94,143,154],"proposed":[78,141],"deal":[80],"with":[81,122,157],"issue":[83],"compensate":[85],"azimuth-varying":[87],"images.":[91],"PSP":[93],"used":[95],"project":[97],"image":[100,127],"onto":[101],"PS,":[103],"using":[105,146],"part":[107],"decompression":[108],"spectral":[110],"analysis,":[111],"so":[112],"as":[113],"realize":[115],"decoupling":[117],"data":[121],"SPE.":[123,139],"Then,":[124],"projected":[126],"be":[129],"directly":[130],"applied":[131],"PGA":[134],"accurately":[136],"estimate":[137],"PSP-PGA":[142],"validated":[144],"several":[147],"simulation":[148],"processing":[149],"experiments":[150],"its":[152],"performance":[153],"finally":[155],"evaluated":[156],"respect":[158],"parameter":[161],"PS":[164],"height.":[165]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}