{"id":"https://openalex.org/W4295832148","doi":"https://doi.org/10.1109/jstars.2022.3206355","title":"An Efficient Multichannel SAR Channel Phase Error Calibration Method Based on Fine-Focused HRWS SAR Image Entropy","display_name":"An Efficient Multichannel SAR Channel Phase Error Calibration Method Based on Fine-Focused HRWS SAR Image Entropy","publication_year":2022,"publication_date":"2022-01-01","ids":{"openalex":"https://openalex.org/W4295832148","doi":"https://doi.org/10.1109/jstars.2022.3206355"},"language":"en","primary_location":{"id":"doi:10.1109/jstars.2022.3206355","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2022.3206355","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.2022.3206355","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5053978252","display_name":"Jixiang Xiang","orcid":"https://orcid.org/0000-0002-8187-4927"},"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":"Jixiang Xiang","raw_affiliation_strings":["National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China"],"raw_orcid":"https://orcid.org/0000-0002-8187-4927","affiliations":[{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069183156","display_name":"Xiaojie Ding","orcid":null},"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":"Xiaojie Ding","raw_affiliation_strings":["National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076178410","display_name":"Guang\u2010Cai Sun","orcid":"https://orcid.org/0000-0002-6482-0863"},"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":"Guang-Cai Sun","raw_affiliation_strings":["National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China"],"raw_orcid":"https://orcid.org/0000-0002-6482-0863","affiliations":[{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101751749","display_name":"Zijing Zhang","orcid":"https://orcid.org/0000-0002-1935-7048"},"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":"Zijing Zhang","raw_affiliation_strings":["National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, 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":"Mengdao Xing","raw_affiliation_strings":["National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China"],"raw_orcid":"https://orcid.org/0000-0002-4084-0915","affiliations":[{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"Collaborative Innovation Center of Information Sensing and Understanding, Xidian University, Xi'an, China","institution_ids":["https://openalex.org/I149594827"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5003394377","display_name":"Wenkang Liu","orcid":"https://orcid.org/0000-0002-4880-0897"},"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":"Wenkang Liu","raw_affiliation_strings":["Academy of Advanced Interdisciplinary Research, Xidian University, Xian, China"],"raw_orcid":"https://orcid.org/0000-0002-4880-0897","affiliations":[{"raw_affiliation_string":"Academy of Advanced Interdisciplinary Research, Xidian University, Xian, China","institution_ids":["https://openalex.org/I149594827"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I149594827"],"apc_list":{"value":1250,"currency":"USD","value_usd":1250},"apc_paid":{"value":1250,"currency":"USD","value_usd":1250},"fwci":6.0225,"has_fulltext":false,"cited_by_count":11,"citation_normalized_percentile":{"value":0.95669627,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":98},"biblio":{"volume":"15","issue":null,"first_page":"7873","last_page":"7885"},"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/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9980000257492065,"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/T10891","display_name":"Radar Systems and Signal Processing","score":0.988099992275238,"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/computer-science","display_name":"Computer science","score":0.8008393049240112},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.7475571036338806},{"id":"https://openalex.org/keywords/azimuth","display_name":"Azimuth","score":0.5723204016685486},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.47384363412857056},{"id":"https://openalex.org/keywords/radar-imaging","display_name":"Radar imaging","score":0.468131422996521},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.4603533446788788},{"id":"https://openalex.org/keywords/iterative-reconstruction","display_name":"Iterative reconstruction","score":0.45755043625831604},{"id":"https://openalex.org/keywords/entropy","display_name":"Entropy (arrow of time)","score":0.44030216336250305},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.43660280108451843},{"id":"https://openalex.org/keywords/residual","display_name":"Residual","score":0.4167245626449585},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.36327266693115234},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3187325596809387},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.22590738534927368},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.1258580982685089},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.10154539346694946},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.08675992488861084}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8008393049240112},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.7475571036338806},{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.5723204016685486},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.47384363412857056},{"id":"https://openalex.org/C10929652","wikidata":"https://www.wikidata.org/wiki/Q7279985","display_name":"Radar imaging","level":3,"score":0.468131422996521},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.4603533446788788},{"id":"https://openalex.org/C141379421","wikidata":"https://www.wikidata.org/wiki/Q6094427","display_name":"Iterative reconstruction","level":2,"score":0.45755043625831604},{"id":"https://openalex.org/C106301342","wikidata":"https://www.wikidata.org/wiki/Q4117933","display_name":"Entropy (arrow of time)","level":2,"score":0.44030216336250305},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.43660280108451843},{"id":"https://openalex.org/C155512373","wikidata":"https://www.wikidata.org/wiki/Q287450","display_name":"Residual","level":2,"score":0.4167245626449585},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.36327266693115234},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3187325596809387},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.22590738534927368},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.1258580982685089},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.10154539346694946},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.08675992488861084},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/jstars.2022.3206355","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2022.3206355","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:407f5e3aa95141a5b592d6074975cc21","is_oa":true,"landing_page_url":"https://doaj.org/article/407f5e3aa95141a5b592d6074975cc21","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"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 15, Pp 7873-7885 (2022)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/jstars.2022.3206355","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2022.3206355","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/G2987154302","display_name":null,"funder_award_id":"62101404","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5505923119","display_name":null,"funder_award_id":"61825105","funder_id":"https://openalex.org/F4320336125","funder_display_name":"National Science Fund for Distinguished Young Scholars"},{"id":"https://openalex.org/G6239197611","display_name":null,"funder_award_id":"62222113","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/F4320336125","display_name":"National Science Fund for Distinguished Young Scholars","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W38894744","https://openalex.org/W1599703818","https://openalex.org/W1973476824","https://openalex.org/W1977957956","https://openalex.org/W1985053641","https://openalex.org/W1991540602","https://openalex.org/W1991674608","https://openalex.org/W2017916240","https://openalex.org/W2097233876","https://openalex.org/W2111650247","https://openalex.org/W2111990836","https://openalex.org/W2125001275","https://openalex.org/W2128394187","https://openalex.org/W2128960312","https://openalex.org/W2131227606","https://openalex.org/W2140990782","https://openalex.org/W2141795796","https://openalex.org/W2145348268","https://openalex.org/W2150329365","https://openalex.org/W2165399609","https://openalex.org/W2380009038","https://openalex.org/W2401400392","https://openalex.org/W2549099839","https://openalex.org/W2891675019","https://openalex.org/W2963310635","https://openalex.org/W3011934685","https://openalex.org/W3045584198","https://openalex.org/W3189937273","https://openalex.org/W3202470209","https://openalex.org/W3205123515","https://openalex.org/W4292230442","https://openalex.org/W6601632824","https://openalex.org/W6632148371","https://openalex.org/W6669093286"],"related_works":["https://openalex.org/W2068843146","https://openalex.org/W2462749609","https://openalex.org/W2545123933","https://openalex.org/W2585813813","https://openalex.org/W2041414401","https://openalex.org/W2042726296","https://openalex.org/W2096748030","https://openalex.org/W3016428515","https://openalex.org/W2160730947","https://openalex.org/W2747205507"],"abstract_inverted_index":{"Azimuth":[0],"multichannel":[1,26,61,97,104],"synthetic":[2],"aperture":[3],"radar":[4],"(SAR)":[5],"is":[6],"a":[7],"useful":[8],"approach":[9],"to":[10,41,95],"solving":[11],"minimum":[12,49,143,153],"antenna":[13],"area":[14],"constraint":[15],"and":[16,20,39,81,87,108,168,176,187,189],"realizing":[17],"high":[18],"resolution":[19],"wide":[21],"swath":[22],"(HRWS)":[23],"imaging":[24,69,148,169,177],"by":[25,66,156],"signal":[27],"reconstruction.":[28],"However,":[29],"channel":[30,51,112,129],"phase":[31,113],"error":[32,52,130,174],"will":[33],"significantly":[34],"degrade":[35],"the":[36,79,82,111,123,128,136,152,158,194,197],"reconstruction":[37,80],"performance":[38],"leads":[40],"azimuth":[42,164],"ghost.":[43],"This":[44],"article":[45],"presents":[46],"an":[47],"efficient":[48],"entropy":[50,144,154],"estimation":[53,131,175],"method":[54,155],"based":[55,162],"on":[56,163],"fine-focused":[57,98,105,115],"SAR":[58,62,99,106,117,124,140,160],"image.":[59],"The":[60],"images":[63,107],"are":[64,93,171,180,185],"obtained":[65],"using":[67,157],"Range-Doppler":[68],"algorithm":[70],"applied":[71],"for":[72],"preprocessed":[73],"data":[74,191],"of":[75,196],"each":[76],"channel.":[77],"Then,":[78],"residual":[83,88],"range":[84,90],"cell":[85],"migration":[86],"second":[89],"compression":[91],"compensation":[92],"performed":[94],"achieve":[96],"images.":[100],"After":[101],"overlapping":[102],"these":[103],"iteratively":[109],"calibrating":[110],"error,":[114],"HRWS":[116,139],"image":[118,125,141,161],"can":[119,133],"be":[120],"achieved.":[121],"Therefore,":[122],"used":[126],"in":[127],"process":[132],"directly":[134],"obtain":[135],"fine":[137],"focused":[138],"after":[142],"iteration":[145],"without":[146],"additional":[147],"operations.":[149],"Compared":[150],"with":[151],"coarse-focused":[159],"deramp,":[165],"redundant":[166],"reconstruction,":[167],"operations":[170],"avoided.":[172],"Thus,":[173],"processing":[178,192],"procedures":[179],"optimized.":[181],"Processing":[182],"efficiency":[183],"improvement":[184],"analyzed,":[186],"simulation":[188],"acquired":[190],"verify":[193],"effectiveness":[195],"proposed":[198],"method.":[199]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}