{"id":"https://openalex.org/W3045584198","doi":"https://doi.org/10.1109/tgrs.2020.3009648","title":"SVD-Based Ambiguity Function Analysis for Nonlinear Trajectory SAR","display_name":"SVD-Based Ambiguity Function Analysis for Nonlinear Trajectory SAR","publication_year":2020,"publication_date":"2020-07-29","ids":{"openalex":"https://openalex.org/W3045584198","doi":"https://doi.org/10.1109/tgrs.2020.3009648","mag":"3045584198"},"language":"en","primary_location":{"id":"doi:10.1109/tgrs.2020.3009648","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2020.3009648","pdf_url":null,"source":{"id":"https://openalex.org/S111326731","display_name":"IEEE Transactions on Geoscience and Remote Sensing","issn_l":"0196-2892","issn":["0196-2892","1558-0644"],"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 Transactions on Geoscience and Remote Sensing","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/A5060268032","display_name":"Jianlai Chen","orcid":"https://orcid.org/0000-0002-8639-9336"},"institutions":[{"id":"https://openalex.org/I139660479","display_name":"Central South University","ror":"https://ror.org/00f1zfq44","country_code":"CN","type":"education","lineage":["https://openalex.org/I139660479"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Jianlai Chen","raw_affiliation_strings":["School of Aeronautics and Astronautics, Central South University, Changsha, China"],"affiliations":[{"raw_affiliation_string":"School of Aeronautics and Astronautics, Central South University, Changsha, China","institution_ids":["https://openalex.org/I139660479"]}]},{"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\u2019an, China","National Laboratory of Radar Signal Processing, Xidian University, Xi'an, China"],"affiliations":[{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi\u2019an, China","institution_ids":["https://openalex.org/I149594827"]},{"raw_affiliation_string":"National Laboratory of Radar Signal Processing, Xidian University, Xi'an, 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":["University of Delaware, Newark, DE, USA"],"affiliations":[{"raw_affiliation_string":"University of Delaware, Newark, DE, USA","institution_ids":["https://openalex.org/I86501945"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5087793912","display_name":"Junchao Zhang","orcid":"https://orcid.org/0000-0003-2243-0012"},"institutions":[{"id":"https://openalex.org/I139660479","display_name":"Central South University","ror":"https://ror.org/00f1zfq44","country_code":"CN","type":"education","lineage":["https://openalex.org/I139660479"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Junchao Zhang","raw_affiliation_strings":["School of Aeronautics and Astronautics, Central South University, Changsha, China"],"affiliations":[{"raw_affiliation_string":"School of Aeronautics and Astronautics, Central South University, Changsha, China","institution_ids":["https://openalex.org/I139660479"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5033390450","display_name":"Buge Liang","orcid":"https://orcid.org/0000-0001-7281-7253"},"institutions":[{"id":"https://openalex.org/I139660479","display_name":"Central South University","ror":"https://ror.org/00f1zfq44","country_code":"CN","type":"education","lineage":["https://openalex.org/I139660479"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Buge Liang","raw_affiliation_strings":["School of Aeronautics and Astronautics, Central South University, Changsha, China"],"affiliations":[{"raw_affiliation_string":"School of Aeronautics and Astronautics, Central South University, Changsha, China","institution_ids":["https://openalex.org/I139660479"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101562721","display_name":"Degui Yang","orcid":"https://orcid.org/0000-0003-1604-9792"},"institutions":[{"id":"https://openalex.org/I139660479","display_name":"Central South University","ror":"https://ror.org/00f1zfq44","country_code":"CN","type":"education","lineage":["https://openalex.org/I139660479"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"De-Gui Yang","raw_affiliation_strings":["School of Aeronautics and Astronautics, Central South University, Changsha, China"],"affiliations":[{"raw_affiliation_string":"School of Aeronautics and Astronautics, Central South University, Changsha, China","institution_ids":["https://openalex.org/I139660479"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5060268032"],"corresponding_institution_ids":["https://openalex.org/I139660479"],"apc_list":null,"apc_paid":null,"fwci":6.9023,"has_fulltext":false,"cited_by_count":25,"citation_normalized_percentile":{"value":0.96413064,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":95,"max":99},"biblio":{"volume":"59","issue":"4","first_page":"3072","last_page":"3087"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9998999834060669,"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":0.9998999834060669,"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":0.9987000226974487,"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":0.9969000220298767,"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/singular-value-decomposition","display_name":"Singular value decomposition","score":0.728774905204773},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6334491968154907},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.6243472099304199},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.601146399974823},{"id":"https://openalex.org/keywords/nonlinear-system","display_name":"Nonlinear system","score":0.5566368103027344},{"id":"https://openalex.org/keywords/ambiguity-function","display_name":"Ambiguity function","score":0.5553151369094849},{"id":"https://openalex.org/keywords/trajectory","display_name":"Trajectory","score":0.5336552262306213},{"id":"https://openalex.org/keywords/azimuth","display_name":"Azimuth","score":0.5191006660461426},{"id":"https://openalex.org/keywords/range","display_name":"Range (aeronautics)","score":0.42687004804611206},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.3590410351753235},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.29395681619644165},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.1674365997314453},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.14681991934776306},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.09107717871665955}],"concepts":[{"id":"https://openalex.org/C22789450","wikidata":"https://www.wikidata.org/wiki/Q420904","display_name":"Singular value decomposition","level":2,"score":0.728774905204773},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6334491968154907},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.6243472099304199},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.601146399974823},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.5566368103027344},{"id":"https://openalex.org/C50878840","wikidata":"https://www.wikidata.org/wiki/Q3206297","display_name":"Ambiguity function","level":4,"score":0.5553151369094849},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.5336552262306213},{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.5191006660461426},{"id":"https://openalex.org/C204323151","wikidata":"https://www.wikidata.org/wiki/Q905424","display_name":"Range (aeronautics)","level":2,"score":0.42687004804611206},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.3590410351753235},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.29395681619644165},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.1674365997314453},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.14681991934776306},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.09107717871665955},{"id":"https://openalex.org/C197424946","wikidata":"https://www.wikidata.org/wiki/Q1165717","display_name":"Waveform","level":3,"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/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"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/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tgrs.2020.3009648","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2020.3009648","pdf_url":null,"source":{"id":"https://openalex.org/S111326731","display_name":"IEEE Transactions on Geoscience and Remote Sensing","issn_l":"0196-2892","issn":["0196-2892","1558-0644"],"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 Transactions on Geoscience and Remote Sensing","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"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/G8212890307","display_name":null,"funder_award_id":"61901531","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":33,"referenced_works":["https://openalex.org/W357677209","https://openalex.org/W1971580542","https://openalex.org/W1998292730","https://openalex.org/W2007344040","https://openalex.org/W2011673809","https://openalex.org/W2025943163","https://openalex.org/W2048442770","https://openalex.org/W2054700682","https://openalex.org/W2063870433","https://openalex.org/W2079299474","https://openalex.org/W2102736780","https://openalex.org/W2103206039","https://openalex.org/W2103833429","https://openalex.org/W2110965352","https://openalex.org/W2113466417","https://openalex.org/W2144784770","https://openalex.org/W2156368184","https://openalex.org/W2330565001","https://openalex.org/W2345049101","https://openalex.org/W2498280603","https://openalex.org/W2513506878","https://openalex.org/W2521278979","https://openalex.org/W2524049303","https://openalex.org/W2599776333","https://openalex.org/W2740900343","https://openalex.org/W2743409100","https://openalex.org/W2775524601","https://openalex.org/W2912657982","https://openalex.org/W2922795189","https://openalex.org/W2945684566","https://openalex.org/W2995720069","https://openalex.org/W3098560524","https://openalex.org/W3116652570"],"related_works":["https://openalex.org/W3006474185","https://openalex.org/W2483195039","https://openalex.org/W2281797687","https://openalex.org/W2358411735","https://openalex.org/W2048211457","https://openalex.org/W4250650723","https://openalex.org/W2611761074","https://openalex.org/W2264261001","https://openalex.org/W2068843146","https://openalex.org/W2462749609"],"abstract_inverted_index":{"A":[0],"nonlinear":[1],"trajectory":[2],"of":[3,103,108,138,176],"a":[4,100],"radar":[5,10],"platform":[6],"in":[7,81,112,142],"synthetic":[8],"aperture":[9],"(SAR)":[11],"may":[12,24,37,48],"lead":[13],"to":[14,75,97,122],"severe":[15],"coupling":[16,58,79],"between":[17,59],"the":[18,21,26,42,57,60,63,68,78,109,113,117,126,132,136,143,146,173,177],"range":[19,61],"and":[20,62,115,160],"azimuth,":[22],"which":[23],"make":[25],"ambiguity":[27],"function":[28],"(AF)":[29],"analysis":[30,36,47,89],"complicated.":[31],"The":[32,93,169],"numerical":[33],"algorithm-based":[34,45],"AF":[35,46,88,114,128,149,180],"be":[38],"computationally":[39],"expensive,":[40],"while":[41],"existing":[43],"analytical":[44,127],"cause":[49],"large":[50],"errors":[51],"because":[52],"it":[53],"does":[54],"not":[55],"consider":[56],"azimuth.":[64],"By":[65],"observing":[66],"that":[67],"singular":[69],"value":[70],"decomposition":[71],"(SVD)":[72],"is":[73,96],"good":[74,174],"deal":[76],"with":[77],"problem,":[80],"this":[82],"article,":[83],"we":[84],"propose":[85],"an":[86],"effective":[87],"based":[90],"on":[91],"SVD.":[92],"key":[94],"idea":[95],"first":[98],"use":[99],"small":[101],"amount":[102],"sampling":[104],"points":[105],"for":[106,125],"SVD":[107],"coupled":[110],"term":[111],"then":[116,166],"decoupled":[118],"vectors":[119],"are":[120,165],"fitted":[121],"high-order":[123],"polynomials":[124],"calculation.":[129,144],"It":[130],"converts":[131],"double":[133],"integral":[134],"into":[135],"product":[137],"two":[139],"single":[140],"integrals":[141],"From":[145],"proposed":[147,178],"SVD-based":[148,179],"analysis,":[150],"three":[151],"parameters,":[152],"namely,":[153],"3-dB":[154],"resolution,":[155],"peak":[156],"sidelobe":[157,162],"ratio":[158,163],"(PSLR),":[159],"integrated":[161],"(ISLR),":[164],"effectively":[167],"computed.":[168],"simulated":[170],"results":[171],"verify":[172],"performance":[175],"analysis.":[181]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":4},{"year":2022,"cited_by_count":5},{"year":2021,"cited_by_count":11}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
