{"id":"https://openalex.org/W2794463910","doi":"https://doi.org/10.1109/jstars.2018.2810857","title":"Early-Stage Deforestation Detection in the Tropics With <i>L</i>-band SAR","display_name":"Early-Stage Deforestation Detection in the Tropics With <i>L</i>-band SAR","publication_year":2018,"publication_date":"2018-03-29","ids":{"openalex":"https://openalex.org/W2794463910","doi":"https://doi.org/10.1109/jstars.2018.2810857","mag":"2794463910"},"language":"en","primary_location":{"id":"doi:10.1109/jstars.2018.2810857","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2018.2810857","pdf_url":"https://ieeexplore.ieee.org/ielx7/4609443/8401947/08327829.pdf","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":"bronze","oa_url":"https://ieeexplore.ieee.org/ielx7/4609443/8401947/08327829.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5101986414","display_name":"Manabu Watanabe","orcid":"https://orcid.org/0000-0002-1130-9420"},"institutions":[{"id":"https://openalex.org/I165522056","display_name":"Tokyo Denki University","ror":"https://ror.org/01pa62v70","country_code":"JP","type":"education","lineage":["https://openalex.org/I165522056"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Manabu Watanabe","raw_affiliation_strings":["School of Science and Engineering, Tokyo Denki University, Hiki-gun, Japan","ORCiD"],"affiliations":[{"raw_affiliation_string":"School of Science and Engineering, Tokyo Denki University, Hiki-gun, Japan","institution_ids":["https://openalex.org/I165522056"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047611948","display_name":"Christian N. Koyama","orcid":"https://orcid.org/0000-0003-3469-9764"},"institutions":[{"id":"https://openalex.org/I165522056","display_name":"Tokyo Denki University","ror":"https://ror.org/01pa62v70","country_code":"JP","type":"education","lineage":["https://openalex.org/I165522056"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Christian N. Koyama","raw_affiliation_strings":["School of Science and Engineering, Tokyo Denki University, Hiki-gun, Japan","ORCiD"],"affiliations":[{"raw_affiliation_string":"School of Science and Engineering, Tokyo Denki University, Hiki-gun, Japan","institution_ids":["https://openalex.org/I165522056"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5009434881","display_name":"Masato Hayashi","orcid":"https://orcid.org/0000-0001-6120-9180"},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masato Hayashi","raw_affiliation_strings":["Earth Observation Research Center, Japan Aerospace Exploration Agency, Tsukuba-shi, Japan"],"affiliations":[{"raw_affiliation_string":"Earth Observation Research Center, Japan Aerospace Exploration Agency, Tsukuba-shi, Japan","institution_ids":["https://openalex.org/I2800865746"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078679001","display_name":"Izumi Nagatani","orcid":"https://orcid.org/0000-0003-0638-7464"},"institutions":[{"id":"https://openalex.org/I2800865746","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2800865746"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Izumi Nagatani","raw_affiliation_strings":["Earth Observation Research Center, Japan Aerospace Exploration Agency, Tsukuba-shi, Japan","ORCiD"],"affiliations":[{"raw_affiliation_string":"Earth Observation Research Center, Japan Aerospace Exploration Agency, Tsukuba-shi, Japan","institution_ids":["https://openalex.org/I2800865746"]},{"raw_affiliation_string":"ORCiD","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5016225372","display_name":"Masanobu Shimada","orcid":"https://orcid.org/0000-0001-8981-6679"},"institutions":[{"id":"https://openalex.org/I165522056","display_name":"Tokyo Denki University","ror":"https://ror.org/01pa62v70","country_code":"JP","type":"education","lineage":["https://openalex.org/I165522056"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masanobu Shimada","raw_affiliation_strings":["School of Science and Engineering, Tokyo Denki University, Hiki-gun, Japan"],"affiliations":[{"raw_affiliation_string":"School of Science and Engineering, Tokyo Denki University, Hiki-gun, Japan","institution_ids":["https://openalex.org/I165522056"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5101986414"],"corresponding_institution_ids":["https://openalex.org/I165522056"],"apc_list":{"value":1250,"currency":"USD","value_usd":1250},"apc_paid":null,"fwci":63.1654,"has_fulltext":true,"cited_by_count":59,"citation_normalized_percentile":{"value":0.99750526,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":"11","issue":"6","first_page":"2127","last_page":"2133"},"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/T12383","display_name":"Aeolian processes and effects","score":0.9704999923706055,"subfield":{"id":"https://openalex.org/subfields/1904","display_name":"Earth-Surface Processes"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9544000029563904,"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/tropics","display_name":"Tropics","score":0.8039109706878662},{"id":"https://openalex.org/keywords/stage","display_name":"Stage (stratigraphy)","score":0.6717365980148315},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.6512270569801331},{"id":"https://openalex.org/keywords/deforestation","display_name":"Deforestation (computer science)","score":0.5671365261077881},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.47265636920928955},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.28466904163360596},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.27735331654548645}],"concepts":[{"id":"https://openalex.org/C50660011","wikidata":"https://www.wikidata.org/wiki/Q42530","display_name":"Tropics","level":2,"score":0.8039109706878662},{"id":"https://openalex.org/C146357865","wikidata":"https://www.wikidata.org/wiki/Q1123245","display_name":"Stage (stratigraphy)","level":2,"score":0.6717365980148315},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.6512270569801331},{"id":"https://openalex.org/C2777399953","wikidata":"https://www.wikidata.org/wiki/Q2155658","display_name":"Deforestation (computer science)","level":2,"score":0.5671365261077881},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.47265636920928955},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.28466904163360596},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.27735331654548645},{"id":"https://openalex.org/C505870484","wikidata":"https://www.wikidata.org/wiki/Q180538","display_name":"Fishery","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/jstars.2018.2810857","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2018.2810857","pdf_url":"https://ieeexplore.ieee.org/ielx7/4609443/8401947/08327829.pdf","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:b30c7a14447b448abebd9838ea1c7f69","is_oa":true,"landing_page_url":"https://doaj.org/article/b30c7a14447b448abebd9838ea1c7f69","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 6, Pp 2127-2133 (2018)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/jstars.2018.2810857","is_oa":true,"landing_page_url":"https://doi.org/10.1109/jstars.2018.2810857","pdf_url":"https://ieeexplore.ieee.org/ielx7/4609443/8401947/08327829.pdf","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"},"sustainable_development_goals":[{"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15","score":0.6800000071525574}],"awards":[],"funders":[{"id":"https://openalex.org/F4320322716","display_name":"Japan International Cooperation Agency","ror":"https://ror.org/022es3t03"},{"id":"https://openalex.org/F4320334900","display_name":"Japan Aerospace Exploration Agency","ror":"https://ror.org/059yhyy33"}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2794463910.pdf","grobid_xml":"https://content.openalex.org/works/W2794463910.grobid-xml"},"referenced_works_count":13,"referenced_works":["https://openalex.org/W1496056937","https://openalex.org/W1991837234","https://openalex.org/W1992529875","https://openalex.org/W2009823861","https://openalex.org/W2014187500","https://openalex.org/W2058743274","https://openalex.org/W2078985447","https://openalex.org/W2087352507","https://openalex.org/W2120560384","https://openalex.org/W2122673356","https://openalex.org/W2141424348","https://openalex.org/W2166371879","https://openalex.org/W2288373547"],"related_works":["https://openalex.org/W2297259345","https://openalex.org/W220931287","https://openalex.org/W2604994590","https://openalex.org/W57616430","https://openalex.org/W4300053515","https://openalex.org/W2962870546","https://openalex.org/W4244446575","https://openalex.org/W2887379530","https://openalex.org/W2550659200","https://openalex.org/W4252699458"],"abstract_inverted_index":{"Polarimetric":[0],"characteristics":[1],"of":[2,23,38,67,87,115,256],"early-stage":[3,114,160,175,299],"deforestation":[4,39,44,131,161,176,300,322],"areas":[5,64],"were":[6,29,73,165,221,226],"examined":[7],"with":[8,273],"L-band":[9,287],"synthetic":[10],"aperture":[11],"radar":[12,155],"(SAR)":[13],"to":[14,31,125,260,277],"develop":[15],"a":[16,294],"forest":[17,279],"early":[18],"warning":[19],"system.":[20],"Time":[21],"series":[22],"PALSAR-2/ScanSAR":[24],"data":[25,28],"and":[26,48,181,191,223,231,241,268],"Landsat":[27],"used":[30],"examine":[32],"the":[33,41,76,83,89,93,96,130,150,154,159,171,203,213,224,253,257,262,266,269,278,308],"differences":[34],"in":[35,40,46,69,217,286],"detection":[36,79],"timing":[37,80],"most":[42],"active":[43],"sites":[45,177,216],"Peru":[47],"Brazil.":[49],"The":[50,78,117,136,174,215],"\u03b3":[51,97,107,118,137,288,311],"<sup":[52,98,108,119,138,187,193,237,243,289,312],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[53,99,109,120,139,188,194,238,244,290,313],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">0</sup>":[54,100,110,121,140,189,195,239,245,291,314],"HH":[55,190,292],"value":[56,102,123,142],"increased":[57,275],"by":[58,134,144,202,252],"0.8":[59],"dB":[60,180,183,230,233],"on":[61,75,212,265,307],"average":[62],"for":[63,185,235,297,319],"undergoing":[65],"early-stages":[66],"deforestation,":[68],"which":[70,218],"felled":[71,209,219,303],"trees":[72,210,220,304],"left":[74,211,306],"ground.":[77,214],"was":[81,132],"almost":[82],"same":[84],"as":[85],"that":[86,283],"using":[88],"optical":[90],"sensor.":[91],"On":[92],"other":[94],"hand,":[95],"HV":[101,122,141,240,258,315],"does":[103],"not":[104],"show":[105],"significant":[106],"change":[111],"at":[112,158],"this":[113],"deforestation.":[116,151],"started":[124],"decrease":[126],"1-1.5":[127],"months":[128,148],"after":[129,149,170],"detected":[133],"Landsat.":[135],"decreased":[143],"1.5-1.6":[145],"dB,":[146],"4-5":[147],"To":[152],"understand":[153],"backscattering":[156],"mechanism":[157],"sites,":[162,301],"field":[163],"experiments":[164],"carried":[166],"out":[167],"2-16":[168],"days":[169],"PALSAR-2/fully-polarimetric":[172],"observations.":[173],"revealed":[178],"1.1-2.5":[179],"2.9-4.0":[182],"increases":[184],"\u03c3":[186,192,236,242],"surface,":[196],"respectively.":[197,247],"This":[198,248],"can":[199,249],"be":[200,250,317],"explained":[201,251],"direct":[204],"(single":[205],"bounce)":[206],"scattering":[207],"from":[208],"removed":[222],"surfaces":[225],"flattened":[227],"showed":[228],"5.2-5.3":[229],"5.3-5.5":[232],"decreases":[234],"volume,":[246],"lower":[254],"sensitivity":[255,276],"polarization":[259],"both":[261],"branches":[263],"remaining":[264],"ground":[267],"surface":[270],"roughness,":[271],"along":[272],"its":[274],"biomass.":[280],"We":[281],"conclude":[282],"an":[284],"increase":[285],"is":[293],"good":[295],"indicator":[296],"detecting":[298,320],"where":[302],"are":[305],"ground,":[309],"while":[310],"may":[316],"useful":[318],"later-stage":[321],"sites.":[323]},"counts_by_year":[{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":8},{"year":2023,"cited_by_count":8},{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":12},{"year":2020,"cited_by_count":8},{"year":2019,"cited_by_count":8},{"year":2018,"cited_by_count":2}],"updated_date":"2026-04-15T08:11:43.952461","created_date":"2025-10-10T00:00:00"}