{"id":"https://openalex.org/W2011062786","doi":"https://doi.org/10.1109/igarss.2012.6351362","title":"Preliminary results from the soil moisture active/passive (SMAP) radiometer digital electronics engineering test unit (ETU)","display_name":"Preliminary results from the soil moisture active/passive (SMAP) radiometer digital electronics engineering test unit (ETU)","publication_year":2012,"publication_date":"2012-07-01","ids":{"openalex":"https://openalex.org/W2011062786","doi":"https://doi.org/10.1109/igarss.2012.6351362","mag":"2011062786"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2012.6351362","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2012.6351362","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 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/A5033675882","display_name":"Damon Bradley","orcid":"https://orcid.org/0000-0002-4305-889X"},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"Damon Bradley","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021939636","display_name":"Cliff Brambora","orcid":null},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Cliff Brambora","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5038908463","display_name":"Ali Feizi","orcid":null},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ali Feizi","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100653932","display_name":"Rafael A. Garc\u00eda","orcid":"https://orcid.org/0000-0002-5452-3929"},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Rafael Garcia","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5080938402","display_name":"Lynn Miles","orcid":null},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Lynn Miles","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013136994","display_name":"Priscilla N. Mohammed","orcid":"https://orcid.org/0000-0003-1649-1548"},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Priscilla Mohammed","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5013984904","display_name":"Jinzheng Peng","orcid":"https://orcid.org/0000-0003-2213-7182"},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jinzheng Peng","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5104087014","display_name":"Jeff Piepmeier","orcid":null},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jeff Piepmeier","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035319399","display_name":"Kamdin B. Shakoorzadeh","orcid":null},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kamdin Shakoorzadeh","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5104361502","display_name":"Mark Wong","orcid":null},"institutions":[{"id":"https://openalex.org/I1306266525","display_name":"Goddard Space Flight Center","ror":"https://ror.org/0171mag52","country_code":"US","type":"facility","lineage":["https://openalex.org/I1306266525","https://openalex.org/I4210124779"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Mark Wong","raw_affiliation_strings":["NASA Goddard Space Flight Center, Greenbelt, MD, USA","NASA/Goddard Space Flight Center,Greenbelt MD,USA"],"affiliations":[{"raw_affiliation_string":"NASA Goddard Space Flight Center, Greenbelt, MD, USA","institution_ids":["https://openalex.org/I1306266525"]},{"raw_affiliation_string":"NASA/Goddard Space Flight Center,Greenbelt MD,USA","institution_ids":["https://openalex.org/I1306266525"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":10,"corresponding_author_ids":["https://openalex.org/A5033675882"],"corresponding_institution_ids":["https://openalex.org/I1306266525"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.09690328,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"47","issue":null,"first_page":"1077","last_page":"1080"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":1.0,"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":1.0,"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":0.9951000213623047,"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/T11333","display_name":"Climate change and permafrost","score":0.9776999950408936,"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":0.8559573888778687},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.7140009999275208},{"id":"https://openalex.org/keywords/spacecraft","display_name":"Spacecraft","score":0.5896441340446472},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.5631168484687805},{"id":"https://openalex.org/keywords/digital-signal-processing","display_name":"Digital signal processing","score":0.5070638656616211},{"id":"https://openalex.org/keywords/microwave-radiometer","display_name":"Microwave radiometer","score":0.49179700016975403},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.4629436731338501},{"id":"https://openalex.org/keywords/radiometry","display_name":"Radiometry","score":0.43304771184921265},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4304533898830414},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.31112879514694214},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.3081357777118683},{"id":"https://openalex.org/keywords/aerospace-engineering","display_name":"Aerospace engineering","score":0.18995815515518188},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.1564682126045227}],"concepts":[{"id":"https://openalex.org/C120189094","wikidata":"https://www.wikidata.org/wiki/Q850281","display_name":"Radiometer","level":2,"score":0.8559573888778687},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.7140009999275208},{"id":"https://openalex.org/C29829512","wikidata":"https://www.wikidata.org/wiki/Q40218","display_name":"Spacecraft","level":2,"score":0.5896441340446472},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.5631168484687805},{"id":"https://openalex.org/C84462506","wikidata":"https://www.wikidata.org/wiki/Q173142","display_name":"Digital signal processing","level":2,"score":0.5070638656616211},{"id":"https://openalex.org/C96960616","wikidata":"https://www.wikidata.org/wiki/Q3814470","display_name":"Microwave radiometer","level":3,"score":0.49179700016975403},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.4629436731338501},{"id":"https://openalex.org/C87456703","wikidata":"https://www.wikidata.org/wiki/Q247760","display_name":"Radiometry","level":2,"score":0.43304771184921265},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4304533898830414},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.31112879514694214},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.3081357777118683},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.18995815515518188},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.1564682126045227}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss.2012.6351362","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2012.6351362","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.7200000286102295,"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W2039348932","https://openalex.org/W2117432050","https://openalex.org/W2158774699","https://openalex.org/W2169118519"],"related_works":["https://openalex.org/W2381259876","https://openalex.org/W2016007472","https://openalex.org/W2360231461","https://openalex.org/W2413930784","https://openalex.org/W2140108161","https://openalex.org/W2005776842","https://openalex.org/W2511456285","https://openalex.org/W1983957298","https://openalex.org/W2165236048","https://openalex.org/W751870123"],"abstract_inverted_index":{"SMAP":[0,86],"is":[1,59,122,129],"one":[2],"of":[3,25,56,73,119,143],"four":[4],"Tier-1":[5],"missions":[6],"recommended":[7],"by":[8,99],"the":[9,47,57,97,127,138,144],"National":[10],"Research":[11],"Council's":[12],"Committee":[13],"on":[14],"Earth":[15],"Science":[16],"and":[17,39,76,111,126,140],"Applications":[18],"from":[19,64],"Space":[20],"[1].":[21],"The":[22,54,85,117],"mission":[23,58,83,128],"consists":[24],"a":[26,40,80],"spacecraft":[27],"with":[28],"two":[29],"instruments:":[30],"an":[31,89],"active":[32],"L-band":[33,42],"1.26":[34],"GHz":[35,51],"synthetic":[36],"aperture":[37],"radar":[38],"passive":[41],"radiometer":[43,87,121],"that":[44,94],"operates":[45],"in":[46,133],"1.400":[48],"to":[49,60,67,131],"1.427":[50],"microwave":[52],"band.":[53],"goal":[55],"use":[61],"data":[62],"derived":[63],"both":[65],"instruments":[66],"construct":[68],"high-resolution,":[69],"high-accuracy":[70],"global":[71],"maps":[72],"soil":[74],"moisture":[75],"freeze/thaw":[77],"states":[78],"over":[79],"3":[81],"year":[82],"duration.":[84],"has":[88],"entirely":[90],"digital":[91,107],"back-end":[92],"processor":[93],"builds":[95],"upon":[96],"findings":[98],"Misra":[100],"et.":[101],"al.":[102],"[2],":[103],"[3]":[104],"for":[105],"its":[106],"signal":[108],"processing":[109],"(DSP)":[110],"radio":[112],"frequency":[113],"interference":[114],"(RFI)":[115],"mitigation.":[116],"implementation":[118],"this":[120],"currently":[123],"under":[124],"way":[125],"scheduled":[130],"launch":[132],"2015.":[134],"This":[135],"paper":[136],"summarizes":[137],"design":[139],"performance":[141],"results":[142],"RDE":[145],"engineering":[146],"test":[147],"unit":[148],"(ETU).":[149]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}