{"id":"https://openalex.org/W2095533285","doi":"https://doi.org/10.1109/lgrs.2012.2195634","title":"Focus Improvement of High-Squint SAR Based on Azimuth Dependence of Quadratic Range Cell Migration Correction","display_name":"Focus Improvement of High-Squint SAR Based on Azimuth Dependence of Quadratic Range Cell Migration Correction","publication_year":2012,"publication_date":"2012-06-01","ids":{"openalex":"https://openalex.org/W2095533285","doi":"https://doi.org/10.1109/lgrs.2012.2195634","mag":"2095533285"},"language":"en","primary_location":{"id":"doi:10.1109/lgrs.2012.2195634","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2012.2195634","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/A5101860926","display_name":"Shuangxi Zhang","orcid":"https://orcid.org/0000-0001-8828-5490"},"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":"Shuang-Xi Zhang","raw_affiliation_strings":["National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","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":"Meng-Dao Xing","raw_affiliation_strings":["National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065367615","display_name":"Xiang\u2010Gen Xia","orcid":"https://orcid.org/0000-0002-5599-7683"},"institutions":[{"id":"https://openalex.org/I86501945","display_name":"University of Delaware","ror":"https://ror.org/01sbq1a82","country_code":"US","type":"education","lineage":["https://openalex.org/I86501945"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Xiang-Gen Xia","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Delaware, Newark, DE, USA","Department of Electrical and Computer Engineering, University of Delaware , Newark, DE, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Delaware, Newark, DE, USA","institution_ids":["https://openalex.org/I86501945"]},{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Delaware , Newark, DE, USA","institution_ids":["https://openalex.org/I86501945"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029338358","display_name":"Lei Zhang","orcid":"https://orcid.org/0000-0001-5879-514X"},"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":"Lei Zhang","raw_affiliation_strings":["National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090880123","display_name":"Rui Guo","orcid":"https://orcid.org/0000-0002-0403-5142"},"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":"Rui Guo","raw_affiliation_strings":["National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102927094","display_name":"Zheng Bao","orcid":"https://orcid.org/0000-0002-7348-7644"},"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":"Zheng Bao","raw_affiliation_strings":["National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"National Key Laboratory for Radar Signal Processing, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":67.5169,"has_fulltext":false,"cited_by_count":51,"citation_normalized_percentile":{"value":0.99643027,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"10","issue":"1","first_page":"150","last_page":"154"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11038","display_name":"Advanced SAR Imaging Techniques","score":1.0,"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":1.0,"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":0.9984999895095825,"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"}},{"id":"https://openalex.org/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9983999729156494,"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/azimuth","display_name":"Azimuth","score":0.8975112438201904},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5768548846244812},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5421160459518433},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.5364094376564026},{"id":"https://openalex.org/keywords/chirp","display_name":"Chirp","score":0.535058319568634},{"id":"https://openalex.org/keywords/interpolation","display_name":"Interpolation (computer graphics)","score":0.519679605960846},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.5195889472961426},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.5094566941261292},{"id":"https://openalex.org/keywords/quadratic-equation","display_name":"Quadratic equation","score":0.5001709461212158},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.4866267144680023},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.3462601900100708},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.24264049530029297},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.19861096143722534},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.19375759363174438},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.12293511629104614}],"concepts":[{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.8975112438201904},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5768548846244812},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5421160459518433},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.5364094376564026},{"id":"https://openalex.org/C132794960","wikidata":"https://www.wikidata.org/wiki/Q27304","display_name":"Chirp","level":3,"score":0.535058319568634},{"id":"https://openalex.org/C137800194","wikidata":"https://www.wikidata.org/wiki/Q11713455","display_name":"Interpolation (computer graphics)","level":3,"score":0.519679605960846},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.5195889472961426},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.5094566941261292},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.5001709461212158},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.4866267144680023},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.3462601900100708},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.24264049530029297},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.19861096143722534},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.19375759363174438},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.12293511629104614},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C159985019","wikidata":"https://www.wikidata.org/wiki/Q181790","display_name":"Composite material","level":1,"score":0.0},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lgrs.2012.2195634","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2012.2195634","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":[{"display_name":"Reduced inequalities","score":0.7400000095367432,"id":"https://metadata.un.org/sdg/10"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320318240","display_name":"European Space Agency","ror":"https://ror.org/03wd9za21"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W599284720","https://openalex.org/W2047941860","https://openalex.org/W2075935494","https://openalex.org/W2098618434","https://openalex.org/W2100123951","https://openalex.org/W2114152188","https://openalex.org/W2116008021","https://openalex.org/W2117638015","https://openalex.org/W2118198126","https://openalex.org/W2120024360","https://openalex.org/W2129610215","https://openalex.org/W2134062774","https://openalex.org/W2149272843","https://openalex.org/W2157680285","https://openalex.org/W2161745552"],"related_works":["https://openalex.org/W3006474185","https://openalex.org/W2377235482","https://openalex.org/W2483195039","https://openalex.org/W2351454232","https://openalex.org/W2382227980","https://openalex.org/W2048211457","https://openalex.org/W2281797687","https://openalex.org/W2068843146","https://openalex.org/W2010341259","https://openalex.org/W2462749609"],"abstract_inverted_index":{"In":[0,76],"this":[1,60],"letter,":[2],"we":[3],"discuss":[4],"the":[5,14,23,28,34,41,50,66,72,78,90,97,125,130],"problem":[6],"that":[7],"linear":[8,86],"range":[9,36,73],"cell":[10,37],"walk":[11],"correction":[12],"in":[13,71,96],"azimuth":[15,24,67],"time":[16],"domain":[17],"may":[18],"cause":[19],"space":[20,68],"variation":[21,69],"along":[22,49],"not":[25],"only":[26],"to":[27,33,57],"quadratic":[29,35],"phase":[30],"but":[31],"also":[32],"migration":[38],"(QRCM)":[39],"under":[40],"conditions":[42],"of":[43,81,129],"high":[44],"resolution":[45],"and":[46,89,119,127],"large":[47],"scene":[48],"azimuth.":[51],"Moreover,":[52],"an":[53],"algorithm":[54,64],"is":[55,83],"proposed":[56,63,102,131],"deal":[58],"with":[59,112],"problem.":[61],"The":[62,101],"adopts":[65],"filtering":[70],"frequency":[74,99],"domain.":[75,100],"addition,":[77],"range-dependence":[79],"component":[80],"QRCM":[82,92],"corrected":[84,95],"by":[85,110],"chirp":[87],"scaling,":[88],"unified":[91],"can":[93,106],"be":[94,107],"2-D":[98],"algorithm,":[103],"without":[104],"interpolation,":[105],"easily":[108],"implemented":[109],"integrating":[111],"motion":[113],"compensation":[114],"for":[115],"image":[116],"processing.":[117],"Simulation":[118],"airborne":[120],"strip-map":[121],"real":[122],"data":[123],"show":[124],"accuracy":[126],"efficiency":[128],"algorithm.":[132]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":2},{"year":2021,"cited_by_count":6},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":8},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}