{"id":"https://openalex.org/W2160197218","doi":"https://doi.org/10.1109/tgrs.2011.2177273","title":"Radiometric Performance of the SMOS Reference Radiometers\u2014Assessment After One Year of Operation","display_name":"Radiometric Performance of the SMOS Reference Radiometers\u2014Assessment After One Year of Operation","publication_year":2012,"publication_date":"2012-01-25","ids":{"openalex":"https://openalex.org/W2160197218","doi":"https://doi.org/10.1109/tgrs.2011.2177273","mag":"2160197218"},"language":"en","primary_location":{"id":"doi:10.1109/tgrs.2011.2177273","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2011.2177273","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/A5081845905","display_name":"Juha Kainulainen","orcid":"https://orcid.org/0000-0002-3947-0777"},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":true,"raw_author_name":"Juha Kainulainen","raw_affiliation_strings":["Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, Aalto, Finland"],"affiliations":[{"raw_affiliation_string":"Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, Aalto, Finland","institution_ids":["https://openalex.org/I9927081"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008146196","display_name":"Andreas Colliander","orcid":"https://orcid.org/0000-0003-4093-8119"},"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"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Andreas Colliander","raw_affiliation_strings":["Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA"],"affiliations":[{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA","institution_ids":["https://openalex.org/I1334627681"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5113694155","display_name":"Josep Ignasi Saranyana Closa","orcid":null},"institutions":[{"id":"https://openalex.org/I4210134227","display_name":"Empresarios Agrupados","ror":"https://ror.org/04838xh83","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210134227"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Josep Closa","raw_affiliation_strings":["CASA EADS, Madrid, Spain"],"affiliations":[{"raw_affiliation_string":"CASA EADS, Madrid, Spain","institution_ids":["https://openalex.org/I4210134227"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5061252892","display_name":"Manuel Mart\u00edn\u2010Neira","orcid":"https://orcid.org/0000-0001-7626-7033"},"institutions":[{"id":"https://openalex.org/I44377176","display_name":"European Space Research and Technology Centre","ror":"https://ror.org/03h3jqn23","country_code":"NL","type":"government","lineage":["https://openalex.org/I2801994115","https://openalex.org/I44377176"]}],"countries":["NL"],"is_corresponding":false,"raw_author_name":"Manuel Martin-Neira","raw_affiliation_strings":["Spain, European Space Agency, Noordwijk, Netherlands"],"affiliations":[{"raw_affiliation_string":"Spain, European Space Agency, Noordwijk, Netherlands","institution_ids":["https://openalex.org/I44377176"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020709010","display_name":"Roger Oliva","orcid":"https://orcid.org/0000-0002-4335-9609"},"institutions":[{"id":"https://openalex.org/I4210093174","display_name":"European Space Astronomy Centre","ror":"https://ror.org/00kw1sm04","country_code":"ES","type":"government","lineage":["https://openalex.org/I2801994115","https://openalex.org/I4210093174"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Roger Oliva","raw_affiliation_strings":["European Space Astronomy Centre, European Space Agency, Villanueva de la Canada, Spain"],"affiliations":[{"raw_affiliation_string":"European Space Astronomy Centre, European Space Agency, Villanueva de la Canada, Spain","institution_ids":["https://openalex.org/I4210093174"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062848735","display_name":"Guillermo Buenadicha","orcid":null},"institutions":[{"id":"https://openalex.org/I4210093174","display_name":"European Space Astronomy Centre","ror":"https://ror.org/00kw1sm04","country_code":"ES","type":"government","lineage":["https://openalex.org/I2801994115","https://openalex.org/I4210093174"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Guillermo Buenadicha","raw_affiliation_strings":["European Space Astronomy Centre, European Space Agency, Villanueva de la Canada, Spain"],"affiliations":[{"raw_affiliation_string":"European Space Astronomy Centre, European Space Agency, Villanueva de la Canada, Spain","institution_ids":["https://openalex.org/I4210093174"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5068104615","display_name":"Pilar Rubiales Alcaine","orcid":null},"institutions":[{"id":"https://openalex.org/I4210134227","display_name":"Empresarios Agrupados","ror":"https://ror.org/04838xh83","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210134227"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Pilar Rubiales Alcaine","raw_affiliation_strings":["CASA EADS, Madrid, Spain"],"affiliations":[{"raw_affiliation_string":"CASA EADS, Madrid, Spain","institution_ids":["https://openalex.org/I4210134227"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076135014","display_name":"Anssi Hakkarainen","orcid":null},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Anssi Hakkarainen","raw_affiliation_strings":["Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, Aalto, Finland"],"affiliations":[{"raw_affiliation_string":"Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, Aalto, Finland","institution_ids":["https://openalex.org/I9927081"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5110907633","display_name":"M. Hallikainen","orcid":null},"institutions":[{"id":"https://openalex.org/I9927081","display_name":"Aalto University","ror":"https://ror.org/020hwjq30","country_code":"FI","type":"education","lineage":["https://openalex.org/I9927081"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Martti T. Hallikainen","raw_affiliation_strings":["Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, Aalto, Finland"],"affiliations":[{"raw_affiliation_string":"Department of Radio Science and Engineering, School of Electrical Engineering, Aalto University, Aalto, Finland","institution_ids":["https://openalex.org/I9927081"]}]}],"institutions":[],"countries_distinct_count":4,"institutions_distinct_count":9,"corresponding_author_ids":["https://openalex.org/A5081845905"],"corresponding_institution_ids":["https://openalex.org/I9927081"],"apc_list":null,"apc_paid":null,"fwci":5.2806,"has_fulltext":false,"cited_by_count":29,"citation_normalized_percentile":{"value":0.95352433,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"50","issue":"5","first_page":"1367","last_page":"1383"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9998999834060669,"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"}},"topics":[{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9998999834060669,"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/T11234","display_name":"Precipitation Measurement and Analysis","score":0.9975000023841858,"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"}},{"id":"https://openalex.org/T11459","display_name":"Arctic and Antarctic ice dynamics","score":0.986299991607666,"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/radiometer","display_name":"Radiometer","score":0.8652186393737793},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.8353176116943359},{"id":"https://openalex.org/keywords/radiometry","display_name":"Radiometry","score":0.7649929523468018},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.7635953426361084},{"id":"https://openalex.org/keywords/brightness-temperature","display_name":"Brightness temperature","score":0.7197492718696594},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.7066187858581543},{"id":"https://openalex.org/keywords/radiometric-dating","display_name":"Radiometric dating","score":0.5053861141204834},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.49592432379722595},{"id":"https://openalex.org/keywords/brightness","display_name":"Brightness","score":0.3671081066131592},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.13971716165542603},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.086882084608078}],"concepts":[{"id":"https://openalex.org/C120189094","wikidata":"https://www.wikidata.org/wiki/Q850281","display_name":"Radiometer","level":2,"score":0.8652186393737793},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.8353176116943359},{"id":"https://openalex.org/C87456703","wikidata":"https://www.wikidata.org/wiki/Q247760","display_name":"Radiometry","level":2,"score":0.7649929523468018},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.7635953426361084},{"id":"https://openalex.org/C53802167","wikidata":"https://www.wikidata.org/wiki/Q4538627","display_name":"Brightness temperature","level":3,"score":0.7197492718696594},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.7066187858581543},{"id":"https://openalex.org/C170187044","wikidata":"https://www.wikidata.org/wiki/Q214753","display_name":"Radiometric dating","level":2,"score":0.5053861141204834},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.49592432379722595},{"id":"https://openalex.org/C125245961","wikidata":"https://www.wikidata.org/wiki/Q221656","display_name":"Brightness","level":2,"score":0.3671081066131592},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.13971716165542603},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.086882084608078},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tgrs.2011.2177273","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tgrs.2011.2177273","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":[{"id":"https://metadata.un.org/sdg/14","score":0.8600000143051147,"display_name":"Life below water"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320332375","display_name":"Jet Propulsion Laboratory","ror":"https://ror.org/027k65916"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W1532691246","https://openalex.org/W1566874705","https://openalex.org/W1968642761","https://openalex.org/W1981352913","https://openalex.org/W1993414040","https://openalex.org/W2025316819","https://openalex.org/W2026477570","https://openalex.org/W2048358083","https://openalex.org/W2075750731","https://openalex.org/W2096625245","https://openalex.org/W2100507482","https://openalex.org/W2103671854","https://openalex.org/W2107094574","https://openalex.org/W2109535177","https://openalex.org/W2116739908","https://openalex.org/W2117070412","https://openalex.org/W2117957988","https://openalex.org/W2118593878","https://openalex.org/W2121167571","https://openalex.org/W2123350397","https://openalex.org/W2142747940","https://openalex.org/W2149501988","https://openalex.org/W2155459956","https://openalex.org/W2155693651","https://openalex.org/W2157349060","https://openalex.org/W2165379047","https://openalex.org/W2166042469","https://openalex.org/W2167275027","https://openalex.org/W2293673475","https://openalex.org/W2589731977","https://openalex.org/W6657141849","https://openalex.org/W6674883721","https://openalex.org/W6678113098"],"related_works":["https://openalex.org/W2043581185","https://openalex.org/W3112266402","https://openalex.org/W2055439495","https://openalex.org/W2499675453","https://openalex.org/W2063863367","https://openalex.org/W3009062694","https://openalex.org/W4286279395","https://openalex.org/W4251278052","https://openalex.org/W2340112247","https://openalex.org/W1983414154"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,67,108],"present":[4,109],"an":[5],"analysis":[6,95],"of":[7,11,18,44,52,77,81],"the":[8,12,19,33,39,49,53,55,74,78,82,94,98,101,115],"radiometric":[9,50],"performance":[10],"three":[13],"1.4-GHz":[14],"noise":[15],"injection":[16],"radiometers":[17,116],"European":[20],"Space":[21],"Agency's":[22],"Soil":[23],"Moisture":[24],"and":[25,60],"Ocean":[26],"Salinity":[27],"(SMOS)":[28],"satellite.":[29],"The":[30,90],"units":[31,99],"measure":[32],"antenna":[34],"temperature,":[35],"which":[36,84],"contributes":[37],"to":[38,117],"average":[40],"brightness":[41],"temperature":[42],"level":[43],"SMOS":[45,69],"retrievals.":[46],"We":[47],"assess":[48],"resolution":[51],"receivers,":[54],"similarity":[56],"between":[57],"their":[58,61,120],"measurements,":[59],"thermal":[62,112],"stability.":[63,121],"For":[64],"these":[65],"purposes,":[66],"use":[68],"measurement":[70],"data":[71],"gathered":[72],"during":[73],"first":[75],"year":[76],"orbital":[79],"operations":[80],"satellite,":[83],"was":[85],"launched":[86],"in":[87],"November":[88],"2009.":[89],"main":[91],"results":[92],"from":[93],"are":[96],"that":[97],"meet":[100],"design":[102],"requirements":[103],"with":[104],"a":[105,110],"margin.":[106],"Also,":[107],"new":[111],"model":[113],"for":[114],"further":[118],"enhance":[119]},"counts_by_year":[{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":7},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":5}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
