{"id":"https://openalex.org/W2147351736","doi":"https://doi.org/10.1109/acssc.2008.5074460","title":"Overcoming polar-format issues in multichannel SAR Autofocus","display_name":"Overcoming polar-format issues in multichannel SAR Autofocus","publication_year":2008,"publication_date":"2008-10-01","ids":{"openalex":"https://openalex.org/W2147351736","doi":"https://doi.org/10.1109/acssc.2008.5074460","mag":"2147351736"},"language":"en","primary_location":{"id":"doi:10.1109/acssc.2008.5074460","is_oa":false,"landing_page_url":"https://doi.org/10.1109/acssc.2008.5074460","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 42nd Asilomar Conference on Signals, Systems and Computers","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/A5109914744","display_name":"Hyun Jeong Cho","orcid":null},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Hyun Jeong Cho","raw_affiliation_strings":["Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA","[Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA","institution_ids":["https://openalex.org/I27837315"]},{"raw_affiliation_string":"[Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI]","institution_ids":["https://openalex.org/I27837315"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5111687622","display_name":"David C. Munson","orcid":null},"institutions":[{"id":"https://openalex.org/I27837315","display_name":"University of Michigan","ror":"https://ror.org/00jmfr291","country_code":"US","type":"education","lineage":["https://openalex.org/I27837315"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"David C. Munson","raw_affiliation_strings":["Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA","[Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, MI, USA","institution_ids":["https://openalex.org/I27837315"]},{"raw_affiliation_string":"[Dept. of Electr. Eng. & Comput. Sci., Univ. of Michigan, Ann Arbor, MI]","institution_ids":["https://openalex.org/I27837315"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I27837315"],"apc_list":null,"apc_paid":null,"fwci":38.1681,"has_fulltext":false,"cited_by_count":14,"citation_normalized_percentile":{"value":0.99314464,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"523","last_page":"527"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"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"}},"topics":[{"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/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9970999956130981,"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/T13114","display_name":"Image Processing Techniques and Applications","score":0.9897000193595886,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"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":0.9424729347229004},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6954026818275452},{"id":"https://openalex.org/keywords/interpolation","display_name":"Interpolation (computer graphics)","score":0.5883954167366028},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.5829089283943176},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.5352905988693237},{"id":"https://openalex.org/keywords/inverse-synthetic-aperture-radar","display_name":"Inverse synthetic aperture radar","score":0.5115116834640503},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5034093260765076},{"id":"https://openalex.org/keywords/image-formation","display_name":"Image formation","score":0.4754193425178528},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.4624801576137543},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3805572986602783},{"id":"https://openalex.org/keywords/radar-imaging","display_name":"Radar imaging","score":0.37279972434043884},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.27896907925605774},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.20145168900489807},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.17888540029525757},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.10971808433532715},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.09499010443687439}],"concepts":[{"id":"https://openalex.org/C103764139","wikidata":"https://www.wikidata.org/wiki/Q210008","display_name":"Autofocus","level":3,"score":0.9424729347229004},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6954026818275452},{"id":"https://openalex.org/C137800194","wikidata":"https://www.wikidata.org/wiki/Q11713455","display_name":"Interpolation (computer graphics)","level":3,"score":0.5883954167366028},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.5829089283943176},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.5352905988693237},{"id":"https://openalex.org/C109094680","wikidata":"https://www.wikidata.org/wiki/Q6060432","display_name":"Inverse synthetic aperture radar","level":4,"score":0.5115116834640503},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5034093260765076},{"id":"https://openalex.org/C125045340","wikidata":"https://www.wikidata.org/wiki/Q6002224","display_name":"Image formation","level":3,"score":0.4754193425178528},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.4624801576137543},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3805572986602783},{"id":"https://openalex.org/C10929652","wikidata":"https://www.wikidata.org/wiki/Q7279985","display_name":"Radar imaging","level":3,"score":0.37279972434043884},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.27896907925605774},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.20145168900489807},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.17888540029525757},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10971808433532715},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.09499010443687439}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/acssc.2008.5074460","is_oa":false,"landing_page_url":"https://doi.org/10.1109/acssc.2008.5074460","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2008 42nd Asilomar Conference on Signals, Systems and Computers","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":6,"referenced_works":["https://openalex.org/W1510539975","https://openalex.org/W1602659231","https://openalex.org/W1904048952","https://openalex.org/W2027243276","https://openalex.org/W2032885709","https://openalex.org/W2067246090"],"related_works":["https://openalex.org/W2999907741","https://openalex.org/W2076238536","https://openalex.org/W2115641108","https://openalex.org/W2912838597","https://openalex.org/W2901191173","https://openalex.org/W2135736152","https://openalex.org/W2152573120","https://openalex.org/W3117542950","https://openalex.org/W2099358242","https://openalex.org/W2072550473"],"abstract_inverted_index":{"Multichannel":[0],"autofocus":[1,48],"(MCA)":[2],"for":[3,135],"synthetic":[4],"aperture":[5],"radar":[6],"(SAR)":[7],"assumes":[8],"one-dimensional":[9,61],"defocusing":[10,62],"and":[11,92],"that":[12],"the":[13,21,25,30,34,51,57,60,74,82,88,100,109,118,127],"perfectly":[14],"focused":[15],"image":[16,22,89,119],"has":[17],"low":[18],"return":[19],"at":[20],"edge,":[23],"where":[24],"scene":[26],"is":[27,53,103],"attenuated":[28],"by":[29,105],"antenna":[31],"pattern.":[32],"When":[33],"assumptions":[35],"are":[36],"satisfied,":[37],"MCA":[38,94],"yields":[39],"better":[40],"or":[41],"even":[42],"perfect":[43],"solutions":[44],"compared":[45],"to":[46,56,95],"other":[47],"methods.":[49],"However,":[50],"performance":[52],"very":[54],"sensitive":[55],"violation":[58],"of":[59,84,99,117,129],"assumption;":[63],"thus":[64],"it":[65],"should":[66],"not":[67],"be":[68,77,132],"used":[69],"with":[70],"polar":[71],"formatting.":[72],"Fortunately,":[73],"problem":[75],"can":[76],"solved":[78],"if":[79],"we":[80],"reverse":[81],"order":[83],"two":[85],"steps":[86],"in":[87,124],"formation":[90],"process":[91],"apply":[93],"a":[96,121],"warped":[97,115],"version":[98],"image,":[101],"which":[102],"obtained":[104],"inverse":[106],"Fourier":[107],"transforming":[108],"polar-grid":[110],"data":[111],"without":[112],"interpolation.":[113],"The":[114],"versions":[116],"satisfy":[120],"low-return":[122,130],"assumption":[123],"practice,":[125],"but":[126],"region":[128],"must":[131],"carefully":[133],"specified":[134],"best":[136],"performance.":[137]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-06-26T08:34:08.712188","created_date":"2025-10-10T00:00:00"}
