{"id":"https://openalex.org/W5397249","doi":null,"title":"RADAR REMOTE SENSING OF SPATIAL CROP VARIABILITY","display_name":"RADAR REMOTE SENSING OF SPATIAL CROP VARIABILITY","publication_year":2005,"publication_date":"2005-01-01","ids":{"openalex":"https://openalex.org/W5397249","mag":"5397249"},"language":"en","primary_location":{"id":"mag:5397249","doi":null,"is_oa":false,"landing_page_url":"https://www.researchgate.net/profile/Erik_Zillmann/publication/255576295_RADAR_REMOTE_SENSING_OF_SPATIAL_CROP_VARIABILITY/links/55d2e61808ae7fb244f5501b.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"article","indexed_in":[],"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/A5078021762","display_name":"Erik Zillmann","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Erik Zillmann","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073729936","display_name":"Holger Lilienthal","orcid":"https://orcid.org/0000-0003-0832-0650","observed_orcids":["https://orcid.org/0000-0003-0832-0650"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Holger Lilienthal","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0003-0832-0650","affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5053922362","display_name":"Thomas Schrage","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Thomas Schrage","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5059332492","display_name":"Ewald Schnug","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ewald Schnug","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.00096342,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"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":0.6234999895095825,"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":0.6234999895095825,"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/T10111","display_name":"Remote Sensing in Agriculture","score":0.3107999861240387,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"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/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.0471000000834465,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/crop-classification","display_name":"crop classification","score":0.7850000262260437},{"id":"https://openalex.org/keywords/x-band-sar","display_name":"X-band SAR","score":0.6620000004768372},{"id":"https://openalex.org/keywords/l-band-sar","display_name":"L-band SAR","score":0.9990000128746033},{"id":"https://openalex.org/keywords/e-sar","display_name":"E-SAR","score":0.7269999980926514},{"id":"https://openalex.org/keywords/radar-backscatter","display_name":"radar backscatter","score":0.8820000290870667},{"id":"https://openalex.org/keywords/polarization","display_name":"polarization","score":0.7580000162124634},{"id":"https://openalex.org/keywords/band-combination","display_name":"band combination","score":0.48399999737739563},{"id":"https://openalex.org/keywords/winter-wheat","display_name":"winter wheat","score":0.7200000286102295},{"id":"https://openalex.org/keywords/biomass-estimation","display_name":"biomass estimation","score":0.5529999732971191},{"id":"https://openalex.org/keywords/crop-geometry","display_name":"crop geometry","score":0.6650000214576721},{"id":"https://openalex.org/keywords/agricultural-remote-sensing","display_name":"agricultural remote sensing","score":0.6759999990463257}],"concepts":[{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.7310272455215454},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.6654530167579651},{"id":"https://openalex.org/C30354325","wikidata":"https://www.wikidata.org/wiki/Q204667","display_name":"Backscatter (email)","level":3,"score":0.6252492666244507},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.5323216319084167},{"id":"https://openalex.org/C205372480","wikidata":"https://www.wikidata.org/wiki/Q210521","display_name":"Image resolution","level":2,"score":0.47878801822662354},{"id":"https://openalex.org/C94747663","wikidata":"https://www.wikidata.org/wiki/Q7574086","display_name":"Spatial variability","level":2,"score":0.4463662803173065},{"id":"https://openalex.org/C10929652","wikidata":"https://www.wikidata.org/wiki/Q7279985","display_name":"Radar imaging","level":3,"score":0.4461456835269928},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.4260435998439789},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.3093571662902832},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2406175434589386},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1956944763660431},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.10153639316558838},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.08784779906272888},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.08037513494491577},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:5397249","doi":null,"is_oa":false,"landing_page_url":"https://www.researchgate.net/profile/Erik_Zillmann/publication/255576295_RADAR_REMOTE_SENSING_OF_SPATIAL_CROP_VARIABILITY/links/55d2e61808ae7fb244f5501b.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.9208999872207642,"display_name":"Zero hunger","id":"https://metadata.un.org/sdg/2"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W172321464","https://openalex.org/W1964768046","https://openalex.org/W1966035399","https://openalex.org/W1982847047","https://openalex.org/W2003111780","https://openalex.org/W2004809854","https://openalex.org/W2037308434","https://openalex.org/W2043035644","https://openalex.org/W2149580466","https://openalex.org/W2159262246","https://openalex.org/W2274202501","https://openalex.org/W2291757254","https://openalex.org/W2302004503","https://openalex.org/W2623652785"],"related_works":["https://openalex.org/W2326913101","https://openalex.org/W2099393005","https://openalex.org/W3120478332","https://openalex.org/W2016470660","https://openalex.org/W2148661943","https://openalex.org/W2118417501","https://openalex.org/W1984597778","https://openalex.org/W2095651898","https://openalex.org/W2188474144","https://openalex.org/W2064952842"],"abstract_inverted_index":{"Agricultural":[0],"environments":[1],"are":[2],"usually":[3],"characterized":[4],"by":[5,54,166],"very":[6],"high":[7,25],"spatial":[8,26],"interand":[9],"intra-field":[10],"variability.":[11,40],"The":[12,41,66,131],"objective":[13],"of":[14,24,63,85,97,144,169,180,199,203],"this":[15],"study":[16],"is":[17,149],"to":[18,76,82],"investigate":[19],"the":[20,55,74,95,139,142,174,177,194,213],"potentials":[21],"and":[22,35,81,110,116,160,215],"restrictions":[23],"resolution,":[27],"multidimensional":[28],"SAR":[29],"imagery":[30],"for":[31,36,100,123,137,183,188],"crop":[32,39,79,87,101,158,207],"type":[33,102],"mapping":[34,138],"determining":[37,124],"infield":[38,125],"experiments":[42],"were":[43,121,164],"carried":[44],"out":[45],"in":[46,128,201],"northern":[47],"Germany":[48],"using":[49,107,167],"airborne":[50],"Xand":[51,98,170],"L-band":[52,99],"acquired":[53],"german":[56],"E-SAR":[57],"sensor":[58],"with":[59,104],"a":[60,217],"ground":[61],"resolution":[62],"1":[64],"m.":[65],"results":[67,175],"indicate":[68],"that":[69],"radar":[70,114,161,181,197],"backscatter":[71,133,162,198],"information":[72,163],"has":[73],"potential":[75,96,143,179],"discriminate":[77],"different":[78,86,108],"types":[80],"identify":[83],"locations":[84],"development":[88],"within":[89],"fields.":[90],"A":[91],"separability":[92],"analysis":[93],"demonstrates":[94],"mapping,":[103],"increasing":[105],"performance":[106],"frequencies":[109],"polarizations.":[111],"Furthermore":[112],"single":[113],"bands":[115],"several":[117],"linear":[118],"band":[119],"combinations":[120,168],"tested":[122],"biomass":[126],"variability":[127],"winter":[129],"wheat.":[130],"X-band":[132],"was":[134],"most":[135],"suitable":[136],"variability,":[140],"whereas":[141],"horizontal":[145],"polarized":[146],"data":[147,182],"(HH)":[148],"slightly":[150],"better":[151],"than":[152],"vertical":[153],"polarization":[154],"(VV).":[155],"Relationships":[156],"between":[157],"parameter":[159],"improved":[165],"L-band.":[171],"Even":[172],"if":[173],"show":[176],"inherent":[178],"agriculture,":[184],"however":[185],"some":[186],"difficulties":[187],"practical":[189],"applications":[190],"still":[191],"remain.":[192],"Especially":[193],"highly":[195],"variable":[196],"crops":[200],"dependence":[202],"various":[204],"factors":[205],"(e.g.":[206],"geometry,":[208],"plant":[209],"surface":[210],"wetness)":[211],"make":[212],"interpretation":[214],"reliability":[216],"challenge.":[218]},"counts_by_year":[],"updated_date":"2026-08-08T07:41:36.138363","created_date":"2016-06-24T00:00:00"}