{"id":"https://openalex.org/W2104417077","doi":"https://doi.org/10.1109/igarss.2007.4423631","title":"SMOS L1 processor prototype: From digital counts to brightness temperatures","display_name":"SMOS L1 processor prototype: From digital counts to brightness temperatures","publication_year":2007,"publication_date":"2007-01-01","ids":{"openalex":"https://openalex.org/W2104417077","doi":"https://doi.org/10.1109/igarss.2007.4423631","mag":"2104417077"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2007.4423631","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2007.4423631","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2007 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/A5003523225","display_name":"Antonio P. Gutierrez","orcid":"https://orcid.org/0000-0001-6809-1728"},"institutions":[{"id":"https://openalex.org/I4210165582","display_name":"Deimos Engenharia (Portugal)","ror":"https://ror.org/05w59af50","country_code":"PT","type":"company","lineage":["https://openalex.org/I4210165582"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Antonio Gutierrez","raw_affiliation_strings":["Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210165582"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5040019417","display_name":"Jos\u00e9 Barbosa","orcid":"https://orcid.org/0000-0002-9929-1703"},"institutions":[{"id":"https://openalex.org/I4210165582","display_name":"Deimos Engenharia (Portugal)","ror":"https://ror.org/05w59af50","country_code":"PT","type":"company","lineage":["https://openalex.org/I4210165582"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Jose Barbosa","raw_affiliation_strings":["Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210165582"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5040666746","display_name":"Nuno Almeida","orcid":"https://orcid.org/0000-0003-0499-5888"},"institutions":[{"id":"https://openalex.org/I4210165582","display_name":"Deimos Engenharia (Portugal)","ror":"https://ror.org/05w59af50","country_code":"PT","type":"company","lineage":["https://openalex.org/I4210165582"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Nuno Almeida","raw_affiliation_strings":["Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210165582"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045080084","display_name":"Nuno Catarino","orcid":null},"institutions":[{"id":"https://openalex.org/I4210165582","display_name":"Deimos Engenharia (Portugal)","ror":"https://ror.org/05w59af50","country_code":"PT","type":"company","lineage":["https://openalex.org/I4210165582"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Nuno Catarino","raw_affiliation_strings":["Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Ground Segment Systems, Deimos Engenharia S.A, Lisboa, Portugal","institution_ids":["https://openalex.org/I4210165582"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013304640","display_name":"Jos\u00e9 Freitas","orcid":"https://orcid.org/0000-0001-6628-2950"},"institutions":[{"id":"https://openalex.org/I188522409","display_name":"Critical Software (Portugal)","ror":"https://ror.org/03er2hr05","country_code":"PT","type":"company","lineage":["https://openalex.org/I188522409"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Jose Freitas","raw_affiliation_strings":["Command and Control, Critical Software S.A., Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Command and Control, Critical Software S.A., Lisboa, Portugal","institution_ids":["https://openalex.org/I188522409"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5041822861","display_name":"Marco Ventura","orcid":null},"institutions":[{"id":"https://openalex.org/I188522409","display_name":"Critical Software (Portugal)","ror":"https://ror.org/03er2hr05","country_code":"PT","type":"company","lineage":["https://openalex.org/I188522409"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Marco Ventura","raw_affiliation_strings":["Command and Control, Critical Software S.A., Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Command and Control, Critical Software S.A., Lisboa, Portugal","institution_ids":["https://openalex.org/I188522409"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020347454","display_name":"Jos\u00e9 Pereira dos Reis","orcid":"https://orcid.org/0000-0002-2505-9565"},"institutions":[{"id":"https://openalex.org/I188522409","display_name":"Critical Software (Portugal)","ror":"https://ror.org/03er2hr05","country_code":"PT","type":"company","lineage":["https://openalex.org/I188522409"]}],"countries":["PT"],"is_corresponding":false,"raw_author_name":"Jose Reis","raw_affiliation_strings":["Command and Control, Critical Software S.A., Lisboa, Portugal"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Command and Control, Critical Software S.A., Lisboa, Portugal","institution_ids":["https://openalex.org/I188522409"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5029820353","display_name":"Michele Zundo","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":"Michele Zundo","raw_affiliation_strings":["European Space Agency, Noordwijk, The Netherlands"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"European Space Agency, Noordwijk, The Netherlands","institution_ids":["https://openalex.org/I44377176"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":8,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":18.9088,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.98765422,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"3626","last_page":"3630"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12019","display_name":"Calibration and Measurement Techniques","score":0.9990000128746033,"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/T12019","display_name":"Calibration and Measurement Techniques","score":0.9990000128746033,"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":0.9976000189781189,"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/T11405","display_name":"Geophysics and Gravity Measurements","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/computer-science","display_name":"Computer science","score":0.777916669845581},{"id":"https://openalex.org/keywords/calibration","display_name":"Calibration","score":0.5448550581932068},{"id":"https://openalex.org/keywords/brightness","display_name":"Brightness","score":0.5329545140266418},{"id":"https://openalex.org/keywords/geolocation","display_name":"Geolocation","score":0.5303628444671631},{"id":"https://openalex.org/keywords/data-processing","display_name":"Data processing","score":0.5137108564376831},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.47245195508003235},{"id":"https://openalex.org/keywords/brightness-temperature","display_name":"Brightness temperature","score":0.42026984691619873},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3916929066181183},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3594932556152344},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.33218705654144287},{"id":"https://openalex.org/keywords/database","display_name":"Database","score":0.23189133405685425},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.0837644636631012}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.777916669845581},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.5448550581932068},{"id":"https://openalex.org/C125245961","wikidata":"https://www.wikidata.org/wiki/Q221656","display_name":"Brightness","level":2,"score":0.5329545140266418},{"id":"https://openalex.org/C22041718","wikidata":"https://www.wikidata.org/wiki/Q638949","display_name":"Geolocation","level":2,"score":0.5303628444671631},{"id":"https://openalex.org/C138827492","wikidata":"https://www.wikidata.org/wiki/Q6661985","display_name":"Data processing","level":2,"score":0.5137108564376831},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.47245195508003235},{"id":"https://openalex.org/C53802167","wikidata":"https://www.wikidata.org/wiki/Q4538627","display_name":"Brightness temperature","level":3,"score":0.42026984691619873},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3916929066181183},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3594932556152344},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.33218705654144287},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.23189133405685425},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.0837644636631012},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","level":1,"score":0.0},{"id":"https://openalex.org/C44838205","wikidata":"https://www.wikidata.org/wiki/Q127995","display_name":"Microwave","level":2,"score":0.0},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss.2007.4423631","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2007.4423631","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2007 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1540718551","https://openalex.org/W1562305598","https://openalex.org/W1893701781","https://openalex.org/W2077321795","https://openalex.org/W2091002530","https://openalex.org/W2096625245","https://openalex.org/W2107094574","https://openalex.org/W2117070412","https://openalex.org/W2122760653","https://openalex.org/W2129920589","https://openalex.org/W2158936099","https://openalex.org/W2160616930"],"related_works":["https://openalex.org/W2163194970","https://openalex.org/W3105229732","https://openalex.org/W2799094075","https://openalex.org/W2892370851","https://openalex.org/W2187946387","https://openalex.org/W1983414154","https://openalex.org/W2501564938","https://openalex.org/W2540909290","https://openalex.org/W2111586823","https://openalex.org/W2390005173"],"abstract_inverted_index":{"L1":[0,29,61,109,127],"processing":[1,48,58,110,119],"of":[2,27,37,45,55,73,82,107,115,124,153,163],"SMOS":[3,93],"data":[4,47],"will":[5,98,134,148],"transform":[6],"MIRAS":[7,164],"instrument":[8],"raw":[9],"outputs":[10],"into":[11,181],"geolocated":[12],"Brightness":[13,182],"Temperatures,":[14],"providing":[15],"observation":[16,200],"angles":[17],"and":[18,41,50,53,112,132,175,186,204],"additional":[19],"parameters":[20],"for":[21,142,160],"the":[22,28,35,38,43,46,51,56,71,74,80,92,108,116,125,143,154,156,161,167,171,187],"L2":[23],"Processor.":[24],"The":[25,60,145],"objectives":[26],"processor":[30,117],"prototype":[31,62],"(L1PP)":[32],"activities":[33],"were":[34],"definition":[36,44,123],"product":[39],"types":[40,129],"contents,":[42],"models":[49],"implementation":[52],"validation":[54],"baseline":[57],"algorithms.":[59],"is":[63],"intended":[64],"to":[65,91],"be":[66,135,149],"used":[67],"in":[68],"studies":[69],"on":[70,79,150],"feasibility":[72],"algorithms":[75,86,173],"as":[76,78],"well":[77],"advantages/disadvantages":[81],"other":[83],"relevant":[84],"proposed":[85],"before":[87],"they":[88],"are":[89],"taken":[90,159],"operational":[94],"chain.":[95],"This":[96],"paper":[97],"begin":[99],"by":[100],"presenting":[101],"a":[102],"very":[103],"high":[104],"level":[105],"description":[106],"strategy":[111],"functional":[113],"blocks":[114],"(called":[118],"units).":[120],"A":[121],"brief":[122],"three":[126,151],"products":[128],"(L1a,":[130],"L1b":[131],"L1c)":[133],"presented,":[136],"together":[137],"with":[138,199],"data-driven":[139],"approach":[140,158],"selected":[141],"processor.":[144],"main":[146],"focus":[147],"aspects":[152],"processing:":[155],"practical":[157],"calibration":[162,169],"data,":[165],"implementing":[166],"in-orbit":[168],"Plan;":[170],"reconstruction":[172],"chosen":[174],"their":[176],"implementation,":[177],"converting":[178],"Calibrated":[179],"Visibilities":[180],"Temperature":[183],"Fourier":[184],"components;":[185],"geolocation":[188],"algorithm,":[189],"computing":[190],"brightness":[191],"temperatures":[192],"over":[193],"an":[194],"Earth":[195],"fixed":[196],"grid":[197],"along":[198],"angles,":[201],"pixel":[202],"size":[203],"accuracy.":[205]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":1},{"year":2022,"cited_by_count":2},{"year":2020,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
