{"id":"https://openalex.org/W4312670624","doi":"https://doi.org/10.1109/igarss46834.2022.9883090","title":"Multi-Frequency Signals of Opportunity Soil Moisture Retrievals for Agricultural Applications","display_name":"Multi-Frequency Signals of Opportunity Soil Moisture Retrievals for Agricultural Applications","publication_year":2022,"publication_date":"2022-07-17","ids":{"openalex":"https://openalex.org/W4312670624","doi":"https://doi.org/10.1109/igarss46834.2022.9883090"},"language":"en","primary_location":{"id":"doi:10.1109/igarss46834.2022.9883090","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss46834.2022.9883090","pdf_url":null,"source":{"id":"https://openalex.org/S4363604196","display_name":"IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2022 - 2022 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/A5101763185","display_name":"Seho Kim","orcid":"https://orcid.org/0000-0001-9227-062X"},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Seho Kim","raw_affiliation_strings":["Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA"],"affiliations":[{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","institution_ids":[]},{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101709319","display_name":"Eric P. Smith","orcid":"https://orcid.org/0000-0001-6751-2025"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Eric P. Smith","raw_affiliation_strings":["Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA"],"affiliations":[{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","institution_ids":[]},{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043274312","display_name":"B. Nold","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Benjamin R. Nold","raw_affiliation_strings":["Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA"],"affiliations":[{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","institution_ids":[]},{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004633797","display_name":"Archana S. Choudhari","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Archana S. Choudhari","raw_affiliation_strings":["Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA"],"affiliations":[{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","institution_ids":[]},{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA","institution_ids":[]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044659164","display_name":"James L. Garrison","orcid":"https://orcid.org/0000-0002-0269-9834"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"James L. Garrison","raw_affiliation_strings":["Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA"],"affiliations":[{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics,West Lafayette,IN,USA","institution_ids":[]},{"raw_affiliation_string":"Purdue University, School of Aeronautics and Astronautics, West Lafayette, IN, USA","institution_ids":[]}]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5101763185"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.3233,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.50567261,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"4204","last_page":"4207"},"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/T11404","display_name":"Irrigation Practices and Water Management","score":0.9609000086784363,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9599000215530396,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/reflectometry","display_name":"Reflectometry","score":0.8208694458007812},{"id":"https://openalex.org/keywords/water-content","display_name":"Water content","score":0.6822091341018677},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.5569030046463013},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5554168224334717},{"id":"https://openalex.org/keywords/sensitivity","display_name":"Sensitivity (control systems)","score":0.5550020933151245},{"id":"https://openalex.org/keywords/moisture","display_name":"Moisture","score":0.531055212020874},{"id":"https://openalex.org/keywords/inverse","display_name":"Inverse","score":0.5072938799858093},{"id":"https://openalex.org/keywords/soil-science","display_name":"Soil science","score":0.49771788716316223},{"id":"https://openalex.org/keywords/environmental-science","display_name":"Environmental science","score":0.4794960618019104},{"id":"https://openalex.org/keywords/inverse-problem","display_name":"Inverse problem","score":0.4313373863697052},{"id":"https://openalex.org/keywords/measure","display_name":"Measure (data warehouse)","score":0.41571539640426636},{"id":"https://openalex.org/keywords/meteorology","display_name":"Meteorology","score":0.22386980056762695},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1823599636554718},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.15910854935646057},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.15243369340896606},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.12098610401153564},{"id":"https://openalex.org/keywords/time-domain","display_name":"Time domain","score":0.09069296717643738},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.08200287818908691},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.07959491014480591},{"id":"https://openalex.org/keywords/geotechnical-engineering","display_name":"Geotechnical engineering","score":0.07907065749168396}],"concepts":[{"id":"https://openalex.org/C2778925768","wikidata":"https://www.wikidata.org/wiki/Q3454718","display_name":"Reflectometry","level":3,"score":0.8208694458007812},{"id":"https://openalex.org/C24939127","wikidata":"https://www.wikidata.org/wiki/Q373499","display_name":"Water content","level":2,"score":0.6822091341018677},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5569030046463013},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5554168224334717},{"id":"https://openalex.org/C21200559","wikidata":"https://www.wikidata.org/wiki/Q7451068","display_name":"Sensitivity (control systems)","level":2,"score":0.5550020933151245},{"id":"https://openalex.org/C176864760","wikidata":"https://www.wikidata.org/wiki/Q217651","display_name":"Moisture","level":2,"score":0.531055212020874},{"id":"https://openalex.org/C207467116","wikidata":"https://www.wikidata.org/wiki/Q4385666","display_name":"Inverse","level":2,"score":0.5072938799858093},{"id":"https://openalex.org/C159390177","wikidata":"https://www.wikidata.org/wiki/Q9161265","display_name":"Soil science","level":1,"score":0.49771788716316223},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.4794960618019104},{"id":"https://openalex.org/C135252773","wikidata":"https://www.wikidata.org/wiki/Q1567213","display_name":"Inverse problem","level":2,"score":0.4313373863697052},{"id":"https://openalex.org/C2780009758","wikidata":"https://www.wikidata.org/wiki/Q6804172","display_name":"Measure (data warehouse)","level":2,"score":0.41571539640426636},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.22386980056762695},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1823599636554718},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.15910854935646057},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.15243369340896606},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.12098610401153564},{"id":"https://openalex.org/C103824480","wikidata":"https://www.wikidata.org/wiki/Q185889","display_name":"Time domain","level":2,"score":0.09069296717643738},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.08200287818908691},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.07959491014480591},{"id":"https://openalex.org/C187320778","wikidata":"https://www.wikidata.org/wiki/Q1349130","display_name":"Geotechnical engineering","level":1,"score":0.07907065749168396},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss46834.2022.9883090","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss46834.2022.9883090","pdf_url":null,"source":{"id":"https://openalex.org/S4363604196","display_name":"IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IGARSS 2022 - 2022 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.800000011920929,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"}],"awards":[{"id":"https://openalex.org/G7802402411","display_name":null,"funder_award_id":"80NSSC18K0938","funder_id":"https://openalex.org/F4320306101","funder_display_name":"National Aeronautics and Space Administration"}],"funders":[{"id":"https://openalex.org/F4320306101","display_name":"National Aeronautics and Space Administration","ror":"https://ror.org/027ka1x80"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W2003707405","https://openalex.org/W2030605379","https://openalex.org/W2066831028","https://openalex.org/W2097544477","https://openalex.org/W2757732041","https://openalex.org/W2763763040","https://openalex.org/W2891102437","https://openalex.org/W3007887052","https://openalex.org/W3092589936","https://openalex.org/W3130296948","https://openalex.org/W3206467664"],"related_works":["https://openalex.org/W2140036717","https://openalex.org/W2091193607","https://openalex.org/W2035752977","https://openalex.org/W2597922112","https://openalex.org/W2084512058","https://openalex.org/W2022839116","https://openalex.org/W2249658485","https://openalex.org/W2139934557","https://openalex.org/W2331917905","https://openalex.org/W3155039083"],"abstract_inverted_index":{"Root-zone":[0],"soil":[1,71],"moisture":[2,72],"(RZSM)":[3],"is":[4],"one":[5],"of":[6,30,40],"the":[7,18,38,65,97],"least":[8],"measured":[9],"hydrological":[10],"variables":[11],"despite":[12],"its":[13],"critical":[14],"role":[15],"in":[16,48],"understanding":[17],"global":[19],"carbon":[20],"cycle":[21],"and":[22,26,81,91,101],"forecasting":[23],"agricultural":[24],"drought":[25],"food":[27],"production.":[28],"Signals":[29],"opportunity":[31],"(SoOp)":[32],"has":[33],"great":[34],"potential":[35],"to":[36,44,60,79,86],"overcome":[37],"limitation":[39],"conventional":[41],"microwave":[42],"methods":[43],"utilize":[45],"lower":[46],"frequencies":[47],"space-borne":[49],"remote":[50],"sensing.":[51],"Multi-frequency":[52],"SoOp":[53],"reflectometry":[54],"(SoOp-R)":[55],"offers":[56],"a":[57],"promising":[58],"solution":[59],"measure":[61],"RZSM":[62],"by":[63],"solving":[64],"inverse":[66,92],"problem":[67],"for":[68,96],"obtaining":[69],"multi-layer":[70],"profiles.":[73],"This":[74],"paper":[75],"summarizes":[76],"ongoing":[77],"work":[78],"develop":[80],"validate":[82],"multi-frequency":[83],"SoOp-":[84],"R":[85],"retrieve":[87],"RZSM,":[88],"including":[89],"forward":[90],"methods,":[93],"sensitivity":[94],"analysis":[95],"optimal":[98],"frequency":[99],"combination,":[100],"tower-based":[102],"field":[103],"experiments.":[104]},"counts_by_year":[{"year":2023,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}