{"id":"https://openalex.org/W2986392936","doi":"https://doi.org/10.1109/igarss.2019.8899227","title":"Initial results from the 2019 NISAR Ecosystem Cal/Val Exercise in the SE USA","display_name":"Initial results from the 2019 NISAR Ecosystem Cal/Val Exercise in the SE USA","publication_year":2019,"publication_date":"2019-07-01","ids":{"openalex":"https://openalex.org/W2986392936","doi":"https://doi.org/10.1109/igarss.2019.8899227","mag":"2986392936"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2019.8899227","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2019.8899227","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2019 - 2019 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/A5083976805","display_name":"Bruce Chapman","orcid":"https://orcid.org/0000-0002-6054-7695"},"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":true,"raw_author_name":"Bruce Chapman","raw_affiliation_strings":["Jet Propulsion Laboratory, California Institute of Technology"],"affiliations":[{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology","institution_ids":["https://openalex.org/I1334627681"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050229976","display_name":"Paul Siqueira","orcid":"https://orcid.org/0000-0001-5781-8282"},"institutions":[{"id":"https://openalex.org/I24603500","display_name":"University of Massachusetts Amherst","ror":"https://ror.org/0072zz521","country_code":"US","type":"education","lineage":["https://openalex.org/I24603500"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Paul Siqueira","raw_affiliation_strings":["University of Massachusetts, Amherst"],"affiliations":[{"raw_affiliation_string":"University of Massachusetts, Amherst","institution_ids":["https://openalex.org/I24603500"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5042922619","display_name":"Sassan Saatchi","orcid":"https://orcid.org/0000-0001-8524-4917"},"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":"Sassan Saatchi","raw_affiliation_strings":["Jet Propulsion Laboratory, California Institute of Technology"],"affiliations":[{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology","institution_ids":["https://openalex.org/I1334627681"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007268288","display_name":"Marc Simard","orcid":"https://orcid.org/0000-0002-9442-4562"},"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":"Marc Simard","raw_affiliation_strings":["Jet Propulsion Laboratory, California Institute of Technology"],"affiliations":[{"raw_affiliation_string":"Jet Propulsion Laboratory, California Institute of Technology","institution_ids":["https://openalex.org/I1334627681"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5048461125","display_name":"Josef Kellndorfer","orcid":"https://orcid.org/0000-0002-7666-2444"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Josef Kellndorfer","raw_affiliation_strings":["Earth Big Data"],"affiliations":[{"raw_affiliation_string":"Earth Big Data","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5083976805"],"corresponding_institution_ids":["https://openalex.org/I1334627681"],"apc_list":null,"apc_paid":null,"fwci":5.9506,"has_fulltext":false,"cited_by_count":15,"citation_normalized_percentile":{"value":0.95826898,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":98},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"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":0.9854999780654907,"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":0.9854999780654907,"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/T11459","display_name":"Arctic and Antarctic ice dynamics","score":0.9329000115394592,"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/T10406","display_name":"Planetary Science and Exploration","score":0.928600013256073,"subfield":{"id":"https://openalex.org/subfields/3103","display_name":"Astronomy and Astrophysics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.6465846300125122},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5961408615112305},{"id":"https://openalex.org/keywords/ecosystem","display_name":"Ecosystem","score":0.558497965335846},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.5510639548301697},{"id":"https://openalex.org/keywords/shuttle-radar-topography-mission","display_name":"Shuttle Radar Topography Mission","score":0.4105619490146637},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.33220505714416504},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.2435792088508606},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.18938034772872925},{"id":"https://openalex.org/keywords/ecology","display_name":"Ecology","score":0.1274922490119934},{"id":"https://openalex.org/keywords/digital-elevation-model","display_name":"Digital elevation model","score":0.07194748520851135}],"concepts":[{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.6465846300125122},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5961408615112305},{"id":"https://openalex.org/C110872660","wikidata":"https://www.wikidata.org/wiki/Q37813","display_name":"Ecosystem","level":2,"score":0.558497965335846},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5510639548301697},{"id":"https://openalex.org/C184149073","wikidata":"https://www.wikidata.org/wiki/Q965136","display_name":"Shuttle Radar Topography Mission","level":3,"score":0.4105619490146637},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.33220505714416504},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.2435792088508606},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.18938034772872925},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.1274922490119934},{"id":"https://openalex.org/C181843262","wikidata":"https://www.wikidata.org/wiki/Q640492","display_name":"Digital elevation model","level":2,"score":0.07194748520851135},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss.2019.8899227","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2019.8899227","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2019 - 2019 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":3,"referenced_works":["https://openalex.org/W2546820265","https://openalex.org/W3044118815","https://openalex.org/W6780384254"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2080020532","https://openalex.org/W2127004658","https://openalex.org/W2031788280","https://openalex.org/W2090233178","https://openalex.org/W4255528761","https://openalex.org/W4235781284","https://openalex.org/W1547970660","https://openalex.org/W2080223487","https://openalex.org/W4252699458"],"abstract_inverted_index":{"The":[0,56],"ecosystem":[1,144,229,237,279],"science":[2,145,280,307],"requirements":[3],"for":[4,82,143,191,198,204,217,226,233,275],"the":[5,31,36,104,114,161,169,176,183,205,243,252,259,272,285,288,291,301],"NASA":[6],"ISRO":[7],"Synthetic":[8],"Aperture":[9],"Radar":[10],"(NISAR)":[11],"will":[12],"need":[13,40],"to":[14,67,88,94,221,269],"be":[15,92],"validated":[16],"after":[17],"its":[18,278],"launch":[19],"in":[20,38,100,147,224,284],"2021":[21],"[1].":[22],"Out":[23],"of":[24,41,46,54,103,106,118,128,141,168,185,209,235,245,261,277,290,303],"all":[25],"disciplines":[26,108],"that":[27],"are":[28,35,156],"encompassed":[29],"by":[30],"NISAR":[32,90,210,227,236,273],"mission,":[33],"ecosystems":[34],"one":[37],"most":[39],"pre-launch":[42,228],"proxy":[43,190],"data,":[44,263,265],"consisting":[45],"repeated":[47],"L-band":[48,139,248],"observations":[49,187],"over":[50],"an":[51],"extended":[52],"period":[53],"time.":[55],"solid":[57],"earth,":[58],"cryosphere,":[59],"and":[60,70,80,84,113,125,131,152,164,207,232,266,294,300],"hazards":[61],"research":[62],"communities":[63],"have":[64,149],"been":[65,98,150],"able":[66,93],"use":[68,184],"historical":[69],"contemporary":[71],"spaceborne":[72,262,295],"data":[73,137,223,250,296],"available":[74],"from":[75,138,251],"ERS-1/2,":[76],"Radarsat,":[77],"TerraSAR,":[78],"Sentinel-1,":[79],"others":[81],"developing":[83],"evaluating":[85],"products":[86,299],"similar":[87],"what":[89],"would":[91],"provide.":[95],"This":[96,240],"has":[97],"possible,":[99],"part,":[101],"because":[102],"focus":[105],"these":[107],"on":[109],"sparsely":[110],"vegetated":[111],"surfaces":[112],"fairly":[115],"straight-forward":[116],"correspondence":[117],"surface":[119],"scattering":[120,162,166,173],"properties":[121],"at":[122,175],"both":[123],"L-":[124],"C-band":[126,186],"(wavelength":[127],"24":[129],"cm":[130,133],"5":[132],"respectively).":[134],"Time":[135],"series":[136],"sensors":[140],"value":[142],"disciplines,":[146,200],"contrast,":[148],"sporadic":[151],"irregular.":[153],"Ecosystems":[154],"targets":[155],"almost":[157],"always":[158],"vegetated,":[159],"with":[160],"components":[163],"volume":[165],"nature":[167],"target":[170],"giving":[171],"different":[172,177],"responses":[174],"wavelength":[178],"regimes.":[179],"For":[180],"this":[181],"reason,":[182],"as":[188,194],"a":[189,213,218],"NISAR's":[192],"L-band,":[193],"is":[195,201,287],"often":[196],"done":[197],"other":[199],"not":[202,246],"possible":[203],"development":[206,231],"testing":[208],"algorithms.In":[211],"2018,":[212],"plan":[214,241,286],"was":[215],"developed":[216],"field/airborne/spaceborne":[219],"campaign":[220],"acquire":[222],"2019":[225],"algorithm":[230],"evaluation":[234],"Cal/Val":[238],"protocols.":[239],"includes":[242],"acquisition":[244,260],"just":[247],"SAR":[249],"NASA/JPL":[253],"UAVSAR":[254],"airborne":[255,264],"SAR,":[256],"but":[257],"also":[258],"field":[267],"measurements":[268],"fully":[270],"exercise":[271],"protocols":[274],"validation":[276,298],"measurement":[281],"requirements.":[282],"Included":[283],"processing":[289],"field,":[292],"airborne,":[293],"into":[297],"generation":[302],"NISAR-like":[304],"level":[305],"3":[306],"products.":[308]},"counts_by_year":[{"year":2022,"cited_by_count":6},{"year":2021,"cited_by_count":5},{"year":2020,"cited_by_count":4}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
