{"id":"https://openalex.org/W2216950372","doi":"https://doi.org/10.1117/12.2194532","title":"Sparsity-driven autofocus for multipass SAR tomography","display_name":"Sparsity-driven autofocus for multipass SAR tomography","publication_year":2015,"publication_date":"2015-10-15","ids":{"openalex":"https://openalex.org/W2216950372","doi":"https://doi.org/10.1117/12.2194532","mag":"2216950372"},"language":"en","primary_location":{"id":"doi:10.1117/12.2194532","is_oa":false,"landing_page_url":"https://doi.org/10.1117/12.2194532","pdf_url":null,"source":{"id":"https://openalex.org/S183492911","display_name":"Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE","issn_l":"0277-786X","issn":["0277-786X","1996-756X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310315543","host_organization_name":"SPIE","host_organization_lineage":["https://openalex.org/P4310315543"],"host_organization_lineage_names":["SPIE"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SPIE Proceedings","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/A5091158533","display_name":"Fiona Muirhead","orcid":null},"institutions":[{"id":"https://openalex.org/I98677209","display_name":"University of Edinburgh","ror":"https://ror.org/01nrxwf90","country_code":"GB","type":"education","lineage":["https://openalex.org/I98677209"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"F. Muirhead","raw_affiliation_strings":["The Univ. of Edinburgh (United Kingdom)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Univ. of Edinburgh (United Kingdom)","institution_ids":["https://openalex.org/I98677209"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076320344","display_name":"B. Mulgrew","orcid":"https://orcid.org/0000-0002-8082-2818"},"institutions":[{"id":"https://openalex.org/I98677209","display_name":"University of Edinburgh","ror":"https://ror.org/01nrxwf90","country_code":"GB","type":"education","lineage":["https://openalex.org/I98677209"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"B. Mulgrew","raw_affiliation_strings":["The Univ. of Edinburgh (United Kingdom)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Univ. of Edinburgh (United Kingdom)","institution_ids":["https://openalex.org/I98677209"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075729628","display_name":"Iain Woodhouse","orcid":null},"institutions":[{"id":"https://openalex.org/I98677209","display_name":"University of Edinburgh","ror":"https://ror.org/01nrxwf90","country_code":"GB","type":"education","lineage":["https://openalex.org/I98677209"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"I. H. Woodhouse","raw_affiliation_strings":["The Univ. of Edinburgh (United Kingdom)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The Univ. of Edinburgh (United Kingdom)","institution_ids":["https://openalex.org/I98677209"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110292704","display_name":"David Greig","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"D. Greig","raw_affiliation_strings":["Selex ES Ltd. (United Kingdom)"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Selex ES Ltd. (United Kingdom)","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.8418,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.79432365,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"9642","issue":null,"first_page":"96420G","last_page":"96420G"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13114","display_name":"Image Processing Techniques and Applications","score":0.9980000257492065,"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"}},"topics":[{"id":"https://openalex.org/T13114","display_name":"Image Processing Techniques and Applications","score":0.9980000257492065,"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"}},{"id":"https://openalex.org/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9962000250816345,"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":0.9959999918937683,"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/autofocus","display_name":"Autofocus","score":0.9229654669761658},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6487460732460022},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.6395248174667358},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.6289370059967041},{"id":"https://openalex.org/keywords/tomography","display_name":"Tomography","score":0.5981521606445312},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5457950234413147},{"id":"https://openalex.org/keywords/computed-tomography","display_name":"Computed tomography","score":0.4310906231403351},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.34881582856178284},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.24592959880828857},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.19180458784103394},{"id":"https://openalex.org/keywords/radiology","display_name":"Radiology","score":0.14729180932044983},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.14202898740768433},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.11139902472496033},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.08760181069374084}],"concepts":[{"id":"https://openalex.org/C103764139","wikidata":"https://www.wikidata.org/wiki/Q210008","display_name":"Autofocus","level":3,"score":0.9229654669761658},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6487460732460022},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.6395248174667358},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.6289370059967041},{"id":"https://openalex.org/C163716698","wikidata":"https://www.wikidata.org/wiki/Q841267","display_name":"Tomography","level":2,"score":0.5981521606445312},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5457950234413147},{"id":"https://openalex.org/C544519230","wikidata":"https://www.wikidata.org/wiki/Q32566","display_name":"Computed tomography","level":2,"score":0.4310906231403351},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.34881582856178284},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.24592959880828857},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.19180458784103394},{"id":"https://openalex.org/C126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","level":1,"score":0.14729180932044983},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.14202898740768433},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.11139902472496033},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.08760181069374084}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1117/12.2194532","is_oa":false,"landing_page_url":"https://doi.org/10.1117/12.2194532","pdf_url":null,"source":{"id":"https://openalex.org/S183492911","display_name":"Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE","issn_l":"0277-786X","issn":["0277-786X","1996-756X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310315543","host_organization_name":"SPIE","host_organization_lineage":["https://openalex.org/P4310315543"],"host_organization_lineage_names":["SPIE"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"SPIE Proceedings","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5699999928474426,"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":34,"referenced_works":["https://openalex.org/W1510539975","https://openalex.org/W1970572065","https://openalex.org/W1992541517","https://openalex.org/W2011816004","https://openalex.org/W2015435644","https://openalex.org/W2025969570","https://openalex.org/W2047029664","https://openalex.org/W2049219548","https://openalex.org/W2049975002","https://openalex.org/W2054794922","https://openalex.org/W2081705281","https://openalex.org/W2100889329","https://openalex.org/W2106407813","https://openalex.org/W2106777535","https://openalex.org/W2113521108","https://openalex.org/W2124469661","https://openalex.org/W2137765378","https://openalex.org/W2145250341","https://openalex.org/W2149060533","https://openalex.org/W2152345895","https://openalex.org/W2155399784","https://openalex.org/W2167711882","https://openalex.org/W2172147072","https://openalex.org/W2334623665","https://openalex.org/W2743482270","https://openalex.org/W2963322354","https://openalex.org/W6654053062","https://openalex.org/W6664266619","https://openalex.org/W6675282281","https://openalex.org/W6675759034","https://openalex.org/W6682325077","https://openalex.org/W6684269294","https://openalex.org/W6697247841","https://openalex.org/W6742374609"],"related_works":["https://openalex.org/W1749329330","https://openalex.org/W2763904007","https://openalex.org/W2083992722","https://openalex.org/W1755453833","https://openalex.org/W2054220418","https://openalex.org/W3007803710","https://openalex.org/W2557037589","https://openalex.org/W2065642904","https://openalex.org/W2040249954","https://openalex.org/W4252699458"],"abstract_inverted_index":{"Synthetic":[0],"aperture":[1],"radar":[2],"(SAR)":[3],"systems":[4],"produce":[5],"high":[6],"resolution,":[7],"two":[8,284],"dimensional":[9,27],"imaging":[10,28,86],"of":[11,13,93,178,241,283],"areas":[12],"environmental":[14],"interest.":[15],"SAR":[16,32,85,144,264],"interferometry":[17,64,130],"and":[18,38,65,87,116,131,195,209,250],"tomography":[19,66,132],"enables":[20],"these":[21,152,201],"techniques":[22,41,89],"to":[23,25,55,62,96,112,146,184,254,303],"extend":[24],"three":[26],"by":[29,109],"exploiting":[30],"multiple":[31,47],"images":[33,48,123,145,293],"with":[34],"diversity":[35],"in":[36,82,142,205,215,228,286,313],"space":[37],"time.":[39],"These":[40],"require":[42],"accurate":[43,68],"phase":[44,76,119,212],"information":[45,305],"over":[46,197,290],"as":[49,151,200],"the":[50,58,91,113,154,158,206,211,219,242,271,280,309],"data":[51,221,256],"is":[52,71,165,245,251],"extremely":[53,127],"sensitive":[54],"deviations":[56],"from":[57,79,90,258],"reference":[59],"track,":[60],"therefore":[61],"enable":[63],"an":[67,98,148,173,275],"autofocus":[69,99,107,149,243,276],"solution":[70,150],"required.":[72],"This":[73,164],"paper":[74],"investigates":[75],"errors":[77,120,213],"resulting":[78],"navigational":[80],"uncertainties":[81],"multipass":[83,114,220],"spotlight":[84],"uses":[88,137],"field":[92],"compressive":[94,179,298],"sensing":[95,180,299],"achieve":[97],"solution.":[100,277],"The":[101,134,176,239,266],"proposed":[102],"algorithm":[103,135,244,272],"builds":[104],"on":[105,172,306],"previous":[106],"work":[108],"expanding":[110],"it":[111,126],"case":[115],"jointly":[117],"recovers":[118],"for":[121,129,160,188,226,233],"all":[122,143,198],"simultaneously,":[124],"making":[125],"useful":[128],"techniques.":[133],"described":[136],"pixels":[138,155,187,202,230],"that":[139,156,192,270],"are":[140,153,157,193,203,231],"stable":[141,194],"gain":[147,304],"focus":[159],"analysis":[161],"using":[162],"tomography.":[163],"unlike":[166],"conventional":[167],"autofocus,":[168,223],"which":[169],"just":[170],"works":[171],"image-by-image":[174],"basis.":[175],"tools":[177],"can":[181,295,300],"be":[182,301],"used":[183],"concurrently":[185],"select":[186],"bright":[189],"image":[190,207],"elements":[191],"coherent":[196],"images,":[199],"sparse":[204],"domain,":[208],"calculate":[210],"present":[214],"each":[216],"pass.":[217],"Using":[218],"after":[222],"height":[224],"distributions":[225],"scatterers":[227,285,307],"single":[229,288],"determined":[232],"simulated":[234,291],"forest":[235],"scenes":[236],"at":[237,311],"X-band.":[238],"performance":[240],"examined":[246],"through":[247],"numerical":[248],"simulations":[249],"also":[252],"applied":[253],"real":[255],"collected":[257],"Selex":[259],"ES\u2019s":[260],"airborne,":[261],"X-band,":[262],"experimental":[263,267],"system.":[265],"results":[268],"demonstrate":[269],"effectively":[273],"achieves":[274],"By":[278],"finding":[279],"vertical":[281],"distribution":[282],"a":[287],"pixel":[289],"forestry":[292],"we":[294],"determine":[296],"if":[297],"utilized":[302],"below":[308],"canopy":[310],"X-band":[312],"future":[314],"studies.":[315]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
