{"id":"https://openalex.org/W4387803576","doi":"https://doi.org/10.1109/igarss52108.2023.10283024","title":"Achievements of the ALOS-2 L-Band SAR Long-Term Pantropical Forest Monitoring Mission","display_name":"Achievements of the ALOS-2 L-Band SAR Long-Term Pantropical Forest Monitoring Mission","publication_year":2023,"publication_date":"2023-07-16","ids":{"openalex":"https://openalex.org/W4387803576","doi":"https://doi.org/10.1109/igarss52108.2023.10283024"},"language":"en","primary_location":{"id":"doi:10.1109/igarss52108.2023.10283024","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss52108.2023.10283024","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium","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/A5047611948","display_name":"Christian N. Koyama","orcid":"https://orcid.org/0000-0003-3469-9764"},"institutions":[{"id":"https://openalex.org/I4210142018","display_name":"Matsushiro Seismological Observatory","ror":"https://ror.org/044sckz61","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2801997990","https://openalex.org/I4210142018"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Christian N. Koyama","raw_affiliation_strings":["JAXA,Earth Observation Research Center,Tsukuba,Japan,305-8505"],"affiliations":[{"raw_affiliation_string":"JAXA,Earth Observation Research Center,Tsukuba,Japan,305-8505","institution_ids":["https://openalex.org/I4210142018"]}]},{"author_position":"middle","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":["Tokyo Denki University,School of Science and Engineering,Hatoyama,Japan,350-0394"],"affiliations":[{"raw_affiliation_string":"Tokyo Denki University,School of Science and Engineering,Hatoyama,Japan,350-0394","institution_ids":["https://openalex.org/I165522056"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013679494","display_name":"Kazufumi Kobayashi","orcid":null},"institutions":[{"id":"https://openalex.org/I4210157597","display_name":"Remote Sensing Technology Center of Japan","ror":"https://ror.org/04z941r10","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210157597"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kazufumi Kobayashi","raw_affiliation_strings":["Remote Sensing Technology Center,Tsukuba,Japan,305-8505"],"affiliations":[{"raw_affiliation_string":"Remote Sensing Technology Center,Tsukuba,Japan,305-8505","institution_ids":["https://openalex.org/I4210157597"]}]},{"author_position":"middle","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":false,"raw_author_name":"Manabu Watanabe","raw_affiliation_strings":["Tokyo Denki University,School of Science and Engineering,Hatoyama,Japan,350-0394"],"affiliations":[{"raw_affiliation_string":"Tokyo Denki University,School of Science and Engineering,Hatoyama,Japan,350-0394","institution_ids":["https://openalex.org/I165522056"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027125446","display_name":"\u00c5ke Rosenqvist","orcid":"https://orcid.org/0000-0001-7896-502X"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ake Rosenqvist","raw_affiliation_strings":["Solo Earth Observation (soloEO),Tokyo,Japan,104-0054"],"affiliations":[{"raw_affiliation_string":"Solo Earth Observation (soloEO),Tokyo,Japan,104-0054","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/I4210142018","display_name":"Matsushiro Seismological Observatory","ror":"https://ror.org/044sckz61","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2801997990","https://openalex.org/I4210142018"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Masato Hayashi","raw_affiliation_strings":["JAXA,Earth Observation Research Center,Tsukuba,Japan,305-8505"],"affiliations":[{"raw_affiliation_string":"JAXA,Earth Observation Research Center,Tsukuba,Japan,305-8505","institution_ids":["https://openalex.org/I4210142018"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064823351","display_name":"Tsutomu Yamanokuchi","orcid":"https://orcid.org/0000-0001-9333-682X"},"institutions":[{"id":"https://openalex.org/I4210157597","display_name":"Remote Sensing Technology Center of Japan","ror":"https://ror.org/04z941r10","country_code":"JP","type":"facility","lineage":["https://openalex.org/I4210157597"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tsutomu Yamanokuchi","raw_affiliation_strings":["Remote Sensing Technology Center,Tsukuba,Japan,305-8505"],"affiliations":[{"raw_affiliation_string":"Remote Sensing Technology Center,Tsukuba,Japan,305-8505","institution_ids":["https://openalex.org/I4210157597"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5003863167","display_name":"Takeo Tadono","orcid":"https://orcid.org/0000-0003-4313-5645"},"institutions":[{"id":"https://openalex.org/I4210142018","display_name":"Matsushiro Seismological Observatory","ror":"https://ror.org/044sckz61","country_code":"JP","type":"facility","lineage":["https://openalex.org/I2801997990","https://openalex.org/I4210142018"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takeo Tadono","raw_affiliation_strings":["JAXA,Earth Observation Research Center,Tsukuba,Japan,305-8505"],"affiliations":[{"raw_affiliation_string":"JAXA,Earth Observation Research Center,Tsukuba,Japan,305-8505","institution_ids":["https://openalex.org/I4210142018"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5047611948"],"corresponding_institution_ids":["https://openalex.org/I4210142018"],"apc_list":null,"apc_paid":null,"fwci":0.4408,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.75900201,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":null,"issue":null,"first_page":"1994","last_page":"1997"},"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/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9718000292778015,"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/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.954800009727478,"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/pantropical","display_name":"Pantropical","score":0.9223992824554443},{"id":"https://openalex.org/keywords/term","display_name":"Term (time)","score":0.7217950820922852},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.6792406439781189},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.4537104666233063},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.44311463832855225},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.43914031982421875},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.315491259098053},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.12788081169128418},{"id":"https://openalex.org/keywords/astronomy","display_name":"Astronomy","score":0.07242289185523987}],"concepts":[{"id":"https://openalex.org/C2776843288","wikidata":"https://www.wikidata.org/wiki/Q1806912","display_name":"Pantropical","level":3,"score":0.9223992824554443},{"id":"https://openalex.org/C61797465","wikidata":"https://www.wikidata.org/wiki/Q1188986","display_name":"Term (time)","level":2,"score":0.7217950820922852},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.6792406439781189},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.4537104666233063},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.44311463832855225},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.43914031982421875},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.315491259098053},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.12788081169128418},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.07242289185523987},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C59822182","wikidata":"https://www.wikidata.org/wiki/Q441","display_name":"Botany","level":1,"score":0.0},{"id":"https://openalex.org/C157369684","wikidata":"https://www.wikidata.org/wiki/Q34740","display_name":"Genus","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss52108.2023.10283024","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss52108.2023.10283024","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2023 - 2023 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.7300000190734863,"id":"https://metadata.un.org/sdg/15","display_name":"Life in Land"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320322716","display_name":"Japan International Cooperation Agency","ror":"https://ror.org/022es3t03"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W2547676015","https://openalex.org/W2794463910","https://openalex.org/W2796746338","https://openalex.org/W2910286635","https://openalex.org/W2972395751","https://openalex.org/W3123683102","https://openalex.org/W3129284925","https://openalex.org/W3194858231","https://openalex.org/W3207374672","https://openalex.org/W4210404294","https://openalex.org/W4229720597","https://openalex.org/W4313018331","https://openalex.org/W6802579158"],"related_works":["https://openalex.org/W2068578050","https://openalex.org/W4239741677","https://openalex.org/W2108399700","https://openalex.org/W1688313397","https://openalex.org/W2372646279","https://openalex.org/W2277345876","https://openalex.org/W4393540031","https://openalex.org/W4244766587","https://openalex.org/W2397305268","https://openalex.org/W4252699458"],"abstract_inverted_index":{"Forest":[0],"monitoring":[1],"is":[2,104],"a":[3,35,56],"prime":[4],"objective":[5],"for":[6,25,38],"orbital":[7],"synthetic":[8],"aperture":[9],"radar":[10,31,54,97],"(SAR)":[11],"missions.":[12],"Especially":[13],"in":[14,107,131,150,155],"tropical":[15],"regions":[16],"where":[17],"persistent":[18],"cloud":[19],"coverage":[20],"incapacitates":[21],"optical":[22],"satellite":[23],"observations":[24,138],"large":[26],"parts":[27],"of":[28,116,127,142],"the":[29,64,70,74,78,114,128,160],"year,":[30],"remote":[32],"sensing":[33],"provides":[34],"unique":[36],"tool":[37,58],"consistent":[39],"all-year":[40],"round":[41],"data":[42],"acquisition.":[43],"In":[44],"contrast":[45],"to":[46,59,77,92],"high-frequencies":[47],"SARs":[48],"at":[49],"C-":[50],"and":[51,118,136],"X-band,":[52],"L-band":[53,165],"constitutes":[55],"powerful":[57],"obtain":[60],"direct":[61],"information":[62],"from":[63,69,99],"full":[65],"forest":[66,79,102,132],"strata":[67],"ranging":[68],"top":[71],"canopy":[72],"all":[73,140],"way":[75],"down":[76],"ground.":[80],"However,":[81],"despite":[82],"important":[83],"advantages,":[84],"SAR":[85,166],"faces":[86],"various":[87],"challenges":[88,123],"when":[89],"it":[90],"comes":[91],"potential":[93],"error":[94],"sources.":[95],"As":[96],"backscattering":[98],"distributed":[100],"natural":[101],"targets":[103],"profoundly":[105],"complicated":[106],"nature,":[108],"ill-defined":[109],"signal":[110],"fluctuations":[111,130],"often":[112],"limited":[113],"reliability":[115],"models":[117],"applications.":[119],"To":[120],"overcome":[121],"these":[122,170],"by":[124],"improved":[125],"understanding":[126],"spatial-temporal":[129],"backscatter,":[133],"coherent,":[134],"multitemporal":[135],"polarimetric":[137],"covering":[139],"kinds":[141],"environment":[143],"conditions":[144],"are":[145],"required.":[146],"Nearing":[147],"9":[148],"years":[149],"orbit":[151],"since":[152],"its":[153],"launch":[154],"2014,":[156],"ALOS-2":[157],"has":[158],"acquired":[159],"world\u2019s":[161],"first":[162],"long-term":[163],"pantropical":[164],"archive":[167],"fulfilling":[168],"exactly":[169],"requirements.":[171]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2026-02-25T23:00:34.991745","created_date":"2025-10-10T00:00:00"}