{"id":"https://openalex.org/W2037956625","doi":"https://doi.org/10.1109/igarss.2009.5417870","title":"Sea surface salinity retrieval demonstration using datasets of synthetic aperture radiometer HUT-2D","display_name":"Sea surface salinity retrieval demonstration using datasets of synthetic aperture radiometer HUT-2D","publication_year":2009,"publication_date":"2009-01-01","ids":{"openalex":"https://openalex.org/W2037956625","doi":"https://doi.org/10.1109/igarss.2009.5417870","mag":"2037956625"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2009.5417870","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2009.5417870","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 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/A5081845905","display_name":"Juha Kainulainen","orcid":"https://orcid.org/0000-0002-3947-0777"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Juha Kainulainen","raw_affiliation_strings":["Department of Radio Science and Engineering, Helsinki University of Technology, Finland","Helsinki University of Technology, Department of Radio Science and Engineering, P.O.Box 3000, FI-02015 TKK, Finland"],"affiliations":[{"raw_affiliation_string":"Department of Radio Science and Engineering, Helsinki University of Technology, Finland","institution_ids":[]},{"raw_affiliation_string":"Helsinki University of Technology, Department of Radio Science and Engineering, P.O.Box 3000, FI-02015 TKK, Finland","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007769072","display_name":"Kimmo Rautiainen","orcid":"https://orcid.org/0000-0003-0321-578X"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Kimmo Rautiainen","raw_affiliation_strings":["Department of Radio Science and Engineering, Helsinki University of Technology, Finland","Helsinki University of Technology, Department of Radio Science and Engineering, P.O.Box 3000, FI-02015 TKK, Finland"],"affiliations":[{"raw_affiliation_string":"Department of Radio Science and Engineering, Helsinki University of Technology, Finland","institution_ids":[]},{"raw_affiliation_string":"Helsinki University of Technology, Department of Radio Science and Engineering, P.O.Box 3000, FI-02015 TKK, Finland","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081338321","display_name":"Juha Lemmetyinen","orcid":"https://orcid.org/0000-0003-4434-9696"},"institutions":[{"id":"https://openalex.org/I1285790362","display_name":"Finnish Meteorological Institute","ror":"https://ror.org/05hppb561","country_code":"FI","type":"government","lineage":["https://openalex.org/I1284112523","https://openalex.org/I1285790362"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Juha Lemmetyinen","raw_affiliation_strings":["Finnish Meteorological Institute, Arctic Research Centre, Helsinki, Finland","Finnish Meteorological Institute, Arctic Research, P.O. Box 503, FI-00101 Helsinki, Finland"],"affiliations":[{"raw_affiliation_string":"Finnish Meteorological Institute, Arctic Research Centre, Helsinki, Finland","institution_ids":["https://openalex.org/I1285790362"]},{"raw_affiliation_string":"Finnish Meteorological Institute, Arctic Research, P.O. Box 503, FI-00101 Helsinki, Finland","institution_ids":["https://openalex.org/I1285790362"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110907633","display_name":"M. Hallikainen","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Martti Hallikainen","raw_affiliation_strings":["Department of Radio Science and Engineering, Helsinki University of Technology, Finland","Helsinki University of Technology, Department of Radio Science and Engineering, P.O.Box 3000, FI-02015 TKK, Finland"],"affiliations":[{"raw_affiliation_string":"Department of Radio Science and Engineering, Helsinki University of Technology, Finland","institution_ids":[]},{"raw_affiliation_string":"Helsinki University of Technology, Department of Radio Science and Engineering, P.O.Box 3000, FI-02015 TKK, Finland","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5061847928","display_name":"F. Mart\u00edn-Porqueras","orcid":null},"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":"Fernando Martin-Porqueras","raw_affiliation_strings":["European Space Research and Technology Centre, European Space Agency, Noordwijk, Netherlands","European Space Agency, European Space Research and Technology Centre Keplerlaan 1, Postbus 299, 2200 AD NOORDWIJK, The Netherlands"],"affiliations":[{"raw_affiliation_string":"European Space Research and Technology Centre, European Space Agency, Noordwijk, Netherlands","institution_ids":["https://openalex.org/I44377176"]},{"raw_affiliation_string":"European Space Agency, European Space Research and Technology Centre Keplerlaan 1, Postbus 299, 2200 AD NOORDWIJK, The Netherlands","institution_ids":["https://openalex.org/I44377176"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5032490923","display_name":"Manuel Martin-Nerra","orcid":null},"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-Nerra","raw_affiliation_strings":["European Space Agency, European Space Research and Technology Centre Keplerlaan 1, Postbus 299, 2200 AD NOORDWIJK, The Netherlands"],"affiliations":[{"raw_affiliation_string":"European Space Agency, European Space Research and Technology Centre Keplerlaan 1, Postbus 299, 2200 AD NOORDWIJK, The Netherlands","institution_ids":["https://openalex.org/I44377176"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5081845905"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.8132,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.75349459,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"46","issue":null,"first_page":"III","last_page":"737"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9995999932289124,"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":0.9995999932289124,"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/T11698","display_name":"Underwater Acoustics Research","score":0.9983000159263611,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"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/T11061","display_name":"Ocean Waves and Remote Sensing","score":0.9975000023841858,"subfield":{"id":"https://openalex.org/subfields/1910","display_name":"Oceanography"},"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/remote-sensing","display_name":"Remote sensing","score":0.8397513628005981},{"id":"https://openalex.org/keywords/radiometer","display_name":"Radiometer","score":0.7904878854751587},{"id":"https://openalex.org/keywords/salinity","display_name":"Salinity","score":0.7844053506851196},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.7243056297302246},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.6328516006469727},{"id":"https://openalex.org/keywords/sea-surface-temperature","display_name":"Sea surface temperature","score":0.6028995513916016},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.5746288299560547},{"id":"https://openalex.org/keywords/aperture-synthesis","display_name":"Aperture synthesis","score":0.5124526619911194},{"id":"https://openalex.org/keywords/surface-roughness","display_name":"Surface roughness","score":0.48593416810035706},{"id":"https://openalex.org/keywords/radiometry","display_name":"Radiometry","score":0.4574742317199707},{"id":"https://openalex.org/keywords/l-band","display_name":"L band","score":0.43450018763542175},{"id":"https://openalex.org/keywords/earth-observation","display_name":"Earth observation","score":0.43388378620147705},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.4022407829761505},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.35063329339027405},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.26670944690704346},{"id":"https://openalex.org/keywords/oceanography","display_name":"Oceanography","score":0.2484285831451416},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.17615726590156555},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.11695918440818787},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.0683647096157074},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.06742066144943237}],"concepts":[{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.8397513628005981},{"id":"https://openalex.org/C120189094","wikidata":"https://www.wikidata.org/wiki/Q850281","display_name":"Radiometer","level":2,"score":0.7904878854751587},{"id":"https://openalex.org/C129513315","wikidata":"https://www.wikidata.org/wiki/Q179615","display_name":"Salinity","level":2,"score":0.7844053506851196},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.7243056297302246},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.6328516006469727},{"id":"https://openalex.org/C134097258","wikidata":"https://www.wikidata.org/wiki/Q1507383","display_name":"Sea surface temperature","level":2,"score":0.6028995513916016},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5746288299560547},{"id":"https://openalex.org/C22094913","wikidata":"https://www.wikidata.org/wiki/Q1961815","display_name":"Aperture synthesis","level":3,"score":0.5124526619911194},{"id":"https://openalex.org/C107365816","wikidata":"https://www.wikidata.org/wiki/Q114817","display_name":"Surface roughness","level":2,"score":0.48593416810035706},{"id":"https://openalex.org/C87456703","wikidata":"https://www.wikidata.org/wiki/Q247760","display_name":"Radiometry","level":2,"score":0.4574742317199707},{"id":"https://openalex.org/C133969743","wikidata":"https://www.wikidata.org/wiki/Q2362353","display_name":"L band","level":2,"score":0.43450018763542175},{"id":"https://openalex.org/C39399123","wikidata":"https://www.wikidata.org/wiki/Q1348989","display_name":"Earth observation","level":3,"score":0.43388378620147705},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.4022407829761505},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.35063329339027405},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.26670944690704346},{"id":"https://openalex.org/C111368507","wikidata":"https://www.wikidata.org/wiki/Q43518","display_name":"Oceanography","level":1,"score":0.2484285831451416},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.17615726590156555},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.11695918440818787},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0683647096157074},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.06742066144943237},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","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},{"id":"https://openalex.org/C166689943","wikidata":"https://www.wikidata.org/wiki/Q850283","display_name":"Interferometry","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss.2009.5417870","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2009.5417870","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/14","score":0.8700000047683716,"display_name":"Life below water"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W1552306197","https://openalex.org/W2099374696","https://openalex.org/W2113338915","https://openalex.org/W2114578440","https://openalex.org/W2124149142","https://openalex.org/W2128527387","https://openalex.org/W2155459956","https://openalex.org/W2162711423","https://openalex.org/W2165827997"],"related_works":["https://openalex.org/W2063863367","https://openalex.org/W4286279395","https://openalex.org/W4251278052","https://openalex.org/W2340112247","https://openalex.org/W751870123","https://openalex.org/W2118353260","https://openalex.org/W2151515459","https://openalex.org/W2017943092","https://openalex.org/W2548732733","https://openalex.org/W2516103524"],"abstract_inverted_index":{"Interferometnc":[0],"aperture":[1,53],"synthesis":[2,54],"is":[3,36,92],"a":[4,22,50,65,75],"new":[5],"technology":[6,31],"proposed":[7],"for":[8,32,61,99],"space-borne":[9],"remote":[10],"sensing":[11],"of":[12,19,21,25,29,64,81,84,95],"sea":[13,85,100,111],"surface":[14,101],"salinity.":[15],"In":[16,38],"the":[17,30,62,70,79,82,88,96],"lack":[18],"availability":[20],"complete":[23,51],"instrument":[24],"this":[26,39,107],"kind,":[27],"validation":[28],"salinity":[33,67,102],"retrieval":[34,103],"purposes":[35],"desired.":[37],"paper":[40],"we":[41,109],"describe":[42],"an":[43],"intense":[44],"measurement":[45],"campaign":[46,59],"carried":[47],"out":[48],"with":[49,115],"interferometnc":[52],"radiometer":[55],"system":[56],"HUT-2D.":[57],"The":[58],"aimed":[60],"detection":[63],"changing":[66],"level":[68],"in":[69],"Baltic":[71],"Sea.":[72],"We":[73],"have":[74],"special":[76],"emphasis":[77],"on":[78,87],"assessment":[80],"impact":[83],"state":[86],"radiometnc":[89],"measurements,":[90],"which":[91],"considered":[93],"one":[94],"major":[97],"obstacles":[98],"at":[104],"L-band.":[105],"For":[106],"purpose":[108],"study":[110],"roughness":[112],"information":[113],"collected":[114],"Global":[116],"Navigation":[117],"Satellite":[118],"System":[119],"Reflectometer.":[120]},"counts_by_year":[{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}