{"id":"https://openalex.org/W4240320321","doi":"https://doi.org/10.1109/jstars.2018.2868119","title":"A Machine-Learning Approach to PolInSAR and LiDAR Data Fusion for Improved Tropical Forest Canopy Height Estimation Using NASA AfriSAR Campaign Data","display_name":"A Machine-Learning Approach to PolInSAR and LiDAR Data Fusion for Improved Tropical Forest Canopy Height Estimation Using NASA AfriSAR Campaign Data","publication_year":2018,"publication_date":"2018-09-20","ids":{"openalex":"https://openalex.org/W4240320321","doi":"https://doi.org/10.1109/jstars.2018.2868119"},"language":"en","primary_location":{"id":"doi:10.1109/jstars.2018.2868119","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jstars.2018.2868119","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":false,"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":null,"license_id":null,"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":"green","oa_url":"https://doaj.org/article/c4de43dcc1004bc99438bafba2e1fc61","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5052301837","display_name":"Maryam Pourshamsi","orcid":"https://orcid.org/0000-0003-1646-4830"},"institutions":[{"id":"https://openalex.org/I153648349","display_name":"University of Leicester","ror":"https://ror.org/04h699437","country_code":"GB","type":"education","lineage":["https://openalex.org/I153648349"]}],"countries":["GB"],"is_corresponding":true,"raw_author_name":"Maryam Pourshamsi","raw_affiliation_strings":["School of Geography, Geology and the Environment, Centre for Landscape and Climate Research, University of Leicester, Leicester, U.K","ORCiD"],"affiliations":[{"raw_affiliation_string":"School of Geography, Geology and the Environment, Centre for Landscape and Climate Research, University of Leicester, Leicester, U.K","institution_ids":["https://openalex.org/I153648349"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044680131","display_name":"Mariano Garc\u0131\u0301a","orcid":"https://orcid.org/0000-0001-6260-5791"},"institutions":[{"id":"https://openalex.org/I189268942","display_name":"Universidad de Alcal\u00e1","ror":"https://ror.org/04pmn0e78","country_code":"ES","type":"education","lineage":["https://openalex.org/I189268942"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Mariano Garcia","raw_affiliation_strings":["Department of Geology, Geography and Environment, University of Alcal\u00e1, Madrid, Spain","Department of Geology, Geography and Environment, University of Alcal&#xe1;, Madrid, Spain"],"affiliations":[{"raw_affiliation_string":"Department of Geology, Geography and Environment, University of Alcal\u00e1, Madrid, Spain","institution_ids":["https://openalex.org/I189268942"]},{"raw_affiliation_string":"Department of Geology, Geography and Environment, University of Alcal&#xe1;, Madrid, Spain","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5069711114","display_name":"Marco Lavalle","orcid":"https://orcid.org/0000-0002-9858-6454"},"institutions":[{"id":"https://openalex.org/I1334627681","display_name":"Jet Propulsion Laboratory","ror":"https://ror.org/027k65916","country_code":"US","type":"facility","lineage":["https://openalex.org/I122411786","https://openalex.org/I1334627681","https://openalex.org/I4210124779"]},{"id":"https://openalex.org/I4210145244","display_name":"Radar (United States)","ror":"https://ror.org/05c5a2504","country_code":"US","type":"company","lineage":["https://openalex.org/I4210145244"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Marco Lavalle","raw_affiliation_strings":["Radar Science and Engineering Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA","ORCiD"],"affiliations":[{"raw_affiliation_string":"Radar Science and Engineering Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA","institution_ids":["https://openalex.org/I1334627681","https://openalex.org/I4210145244"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5018226678","display_name":"Heiko Balzter","orcid":"https://orcid.org/0000-0002-9053-4684"},"institutions":[{"id":"https://openalex.org/I4210128104","display_name":"National Centre for Earth Observation","ror":"https://ror.org/0375jbm11","country_code":"GB","type":"facility","lineage":["https://openalex.org/I141816643","https://openalex.org/I4210087105","https://openalex.org/I4210128104"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Heiko Balzter","raw_affiliation_strings":["School of Geography, Geology and the Environment, Centre for Landscape and Climate Research and National Centre for Earth Observation, University of Leicester, Leicester, U.K","ORCiD"],"affiliations":[{"raw_affiliation_string":"School of Geography, Geology and the Environment, Centre for Landscape and Climate Research and National Centre for Earth Observation, University of Leicester, Leicester, U.K","institution_ids":["https://openalex.org/I4210128104"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5052301837"],"corresponding_institution_ids":["https://openalex.org/I153648349"],"apc_list":{"value":1250,"currency":"USD","value_usd":1250},"apc_paid":null,"fwci":36.3988,"has_fulltext":false,"cited_by_count":58,"citation_normalized_percentile":{"value":0.99415888,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":99},"biblio":{"volume":"11","issue":"10","first_page":"3453","last_page":"3463"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9997000098228455,"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/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9997000098228455,"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/T11164","display_name":"Remote Sensing and LiDAR Applications","score":0.9980999827384949,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10644","display_name":"Cryospheric studies and observations","score":0.9973999857902527,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/lidar","display_name":"Lidar","score":0.9272663593292236},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.783318042755127},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7333239316940308},{"id":"https://openalex.org/keywords/backscatter","display_name":"Backscatter (email)","score":0.5612577795982361},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.46891888976097107},{"id":"https://openalex.org/keywords/interferometry","display_name":"Interferometry","score":0.45336371660232544},{"id":"https://openalex.org/keywords/interferometric-synthetic-aperture-radar","display_name":"Interferometric synthetic aperture radar","score":0.43568602204322815},{"id":"https://openalex.org/keywords/data-set","display_name":"Data set","score":0.41838058829307556},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.33448565006256104},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.13238656520843506},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.06543263792991638}],"concepts":[{"id":"https://openalex.org/C51399673","wikidata":"https://www.wikidata.org/wiki/Q504027","display_name":"Lidar","level":2,"score":0.9272663593292236},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.783318042755127},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7333239316940308},{"id":"https://openalex.org/C30354325","wikidata":"https://www.wikidata.org/wiki/Q204667","display_name":"Backscatter (email)","level":3,"score":0.5612577795982361},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.46891888976097107},{"id":"https://openalex.org/C166689943","wikidata":"https://www.wikidata.org/wiki/Q850283","display_name":"Interferometry","level":2,"score":0.45336371660232544},{"id":"https://openalex.org/C22286887","wikidata":"https://www.wikidata.org/wiki/Q1666056","display_name":"Interferometric synthetic aperture radar","level":3,"score":0.43568602204322815},{"id":"https://openalex.org/C58489278","wikidata":"https://www.wikidata.org/wiki/Q1172284","display_name":"Data set","level":2,"score":0.41838058829307556},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.33448565006256104},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.13238656520843506},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.06543263792991638},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.1109/jstars.2018.2868119","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jstars.2018.2868119","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":false,"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":null,"license_id":null,"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:c4de43dcc1004bc99438bafba2e1fc61","is_oa":true,"landing_page_url":"https://doaj.org/article/c4de43dcc1004bc99438bafba2e1fc61","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"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 11, Iss 10, Pp 3453-3463 (2018)","raw_type":"article"},{"id":"pmh:oai:lra.le.ac.uk:2381/43848","is_oa":true,"landing_page_url":"http://hdl.handle.net/2381/43848","pdf_url":null,"source":{"id":"https://openalex.org/S4306402365","display_name":"Leicester Research Archive (University of Leicester)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I153648349","host_organization_name":"University of Leicester","host_organization_lineage":["https://openalex.org/I153648349"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Journal Article"}],"best_oa_location":{"id":"pmh:oai:doaj.org/article:c4de43dcc1004bc99438bafba2e1fc61","is_oa":true,"landing_page_url":"https://doaj.org/article/c4de43dcc1004bc99438bafba2e1fc61","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"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 11, Iss 10, Pp 3453-3463 (2018)","raw_type":"article"},"sustainable_development_goals":[{"score":0.7699999809265137,"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15"}],"awards":[{"id":"https://openalex.org/G2584006579","display_name":null,"funder_award_id":"NE/R000115/1","funder_id":"https://openalex.org/F4320334631","funder_display_name":"Natural Environment Research Council"},{"id":"https://openalex.org/G4061351200","display_name":null,"funder_award_id":"nceo020005","funder_id":"https://openalex.org/F4320320022","funder_display_name":"Sight Research UK"},{"id":"https://openalex.org/G4076460521","display_name":null,"funder_award_id":"nceo020005","funder_id":"https://openalex.org/F4320334631","funder_display_name":"Natural Environment Research Council"},{"id":"https://openalex.org/G4314125921","display_name":"DTP - University of Leicester","funder_award_id":"EP/M508081/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G7238408947","display_name":null,"funder_award_id":"NE/R000115/1","funder_id":"https://openalex.org/F4320320022","funder_display_name":"Sight Research UK"}],"funders":[{"id":"https://openalex.org/F4320320022","display_name":"Sight Research UK","ror":"https://ror.org/03z2py885"},{"id":"https://openalex.org/F4320334627","display_name":"Engineering and Physical Sciences Research Council","ror":"https://ror.org/0439y7842"},{"id":"https://openalex.org/F4320334631","display_name":"Natural Environment Research Council","ror":"https://ror.org/02b5d8509"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":51,"referenced_works":["https://openalex.org/W76422563","https://openalex.org/W199755745","https://openalex.org/W1179254689","https://openalex.org/W1250998135","https://openalex.org/W1538058927","https://openalex.org/W1579504820","https://openalex.org/W1869391892","https://openalex.org/W1967177682","https://openalex.org/W1976723446","https://openalex.org/W1992329416","https://openalex.org/W1992541517","https://openalex.org/W1997427322","https://openalex.org/W2001470990","https://openalex.org/W2008542193","https://openalex.org/W2008926204","https://openalex.org/W2015139108","https://openalex.org/W2020520344","https://openalex.org/W2023854732","https://openalex.org/W2024566288","https://openalex.org/W2044769733","https://openalex.org/W2044987471","https://openalex.org/W2049280900","https://openalex.org/W2064670221","https://openalex.org/W2065407071","https://openalex.org/W2094365596","https://openalex.org/W2101748122","https://openalex.org/W2108426499","https://openalex.org/W2126464026","https://openalex.org/W2136314381","https://openalex.org/W2136371222","https://openalex.org/W2142677925","https://openalex.org/W2143716001","https://openalex.org/W2146552104","https://openalex.org/W2155618100","https://openalex.org/W2156374693","https://openalex.org/W2269369078","https://openalex.org/W2537504540","https://openalex.org/W2540252597","https://openalex.org/W2580337091","https://openalex.org/W2581039851","https://openalex.org/W2607590775","https://openalex.org/W2745102831","https://openalex.org/W2774824407","https://openalex.org/W2993502306","https://openalex.org/W4239510810","https://openalex.org/W6603137269","https://openalex.org/W6608130966","https://openalex.org/W6627996858","https://openalex.org/W6639165917","https://openalex.org/W6732627723","https://openalex.org/W6771498429"],"related_works":["https://openalex.org/W2126662085","https://openalex.org/W2140098331","https://openalex.org/W4321077502","https://openalex.org/W2084135049","https://openalex.org/W2086594139","https://openalex.org/W4321518183","https://openalex.org/W2074065773","https://openalex.org/W2153133857","https://openalex.org/W3206958763","https://openalex.org/W1987009641"],"abstract_inverted_index":{"This":[0,148,224],"paper":[1],"investigates":[2],"the":[3,63,83,88,110,120,133,138,142,160,180,184],"benefits":[4],"of":[5,44,78,86,126,242],"integrating":[6],"multibaseline":[7,51,64,211],"polarimetric":[8],"interferometric":[9,30],"SAR":[10,161],"(PolInSAR)":[11],"data":[12,174],"with":[13,162],"LiDAR":[14,74,101,106,113,165,186,244],"measurements":[15,248],"using":[16,54,66,141],"a":[17,41,67,99,124,155,195,240],"machine-learning":[18],"approach":[19,170,193,213],"in":[20,82,136],"order":[21],"to":[22,34,118,131,228],"obtain":[23,119],"improved":[24],"forest":[25,251],"canopy":[26],"height":[27,37,122,127,140,152,190],"estimates.":[28],"Multiple":[29],"baselines":[31],"are":[32,115],"required":[33],"ensure":[35],"consistent":[36],"retrieval":[38,134],"performance":[39],"across":[40],"broad":[42],"range":[43],"tree":[45],"heights.":[46],"Previous":[47],"studies":[48],"have":[49],"proposed":[50],"merging":[52,65,212],"strategies":[53],"metrics":[55],"extracted":[56],"from":[57,191],"PolInSAR":[58,111,146,247],"measurements.":[59],"Here,":[60],"we":[61],"introduce":[62],"support":[68],"vector":[69],"machine":[70],"trained":[71],"by":[72,159,179],"sparse":[73,105],"samples.":[75],"The":[76,188],"novelty":[77],"this":[79,192],"method":[80,225],"lies":[81],"new":[84],"way":[85],"combining":[87],"two":[89],"datasets.":[90],"Its":[91],"advantage":[92],"is":[93,226],"that":[94],"it":[95],"does":[96],"not":[97,116],"require":[98],"complete":[100],"coverage,":[102],"but":[103,129],"only":[104,163],"samples":[107,114,245],"distributed":[108],"over":[109,176],"image.":[112],"used":[117],"best":[121,139],"among":[123],"set":[125],"stacks,":[128],"rather":[130],"train":[132],"algorithm":[135],"selecting":[137],"variables":[143],"derived":[144],"through":[145],"processing.":[147],"enables":[149],"more":[150],"accurate":[151],"estimation":[153],"for":[154,249],"wider":[156],"scene":[157],"covered":[158],"partial":[164],"coverage.":[166],"We":[167],"test":[168],"our":[169],"on":[171],"NASA":[172],"AfriSAR":[173],"acquired":[175],"tropical":[177],"forests":[178],"L-band":[181],"UAVSAR":[182],"and":[183,235,246],"LVIS":[185],"instruments.":[187],"estimated":[189],"has":[194],"higher":[196],"accuracy":[197],"(r":[198,214],"<sup":[199,215],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[200,216],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">2</sup>":[201,217],"=":[202,205,218,221],"0.81,":[203],"RMSE":[204,220],"7.1":[206],"m)":[207],"than":[208],"previously":[209],"introduced":[210],"0.67,":[219],"9.2":[222],"m).":[223],"beneficial":[227],"future":[229],"spaceborne":[230],"missions,":[231],"such":[232],"as":[233],"GEDI":[234],"BIOMASS,":[236],"which":[237],"will":[238],"provide":[239],"wealth":[241],"near-contemporaneous":[243],"mapping":[250],"structure":[252],"at":[253],"global":[254],"scale.":[255]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":10},{"year":2024,"cited_by_count":9},{"year":2023,"cited_by_count":10},{"year":2022,"cited_by_count":9},{"year":2021,"cited_by_count":8},{"year":2020,"cited_by_count":6},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}