{"id":"https://openalex.org/W3207503902","doi":"https://doi.org/10.1109/igarss47720.2021.9554075","title":"Synchronization of Radio Signals for the Unconnected L-Band Interferometer Demonstrator (ULID)","display_name":"Synchronization of Radio Signals for the Unconnected L-Band Interferometer Demonstrator (ULID)","publication_year":2021,"publication_date":"2021-07-11","ids":{"openalex":"https://openalex.org/W3207503902","doi":"https://doi.org/10.1109/igarss47720.2021.9554075","mag":"3207503902"},"language":"en","primary_location":{"id":"doi:10.1109/igarss47720.2021.9554075","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss47720.2021.9554075","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS","raw_type":"proceedings-article"},"type":"conference-paper","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/A5116016364","display_name":"\u00c9ric Anterrieu","orcid":"https://orcid.org/0009-0007-2233-9098"},"institutions":[{"id":"https://openalex.org/I4210100083","display_name":"Centre d'\u00c9tudes Spatiales de la Biosph\u00e8re","ror":"https://ror.org/01225hq90","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1327553481","https://openalex.org/I154202486","https://openalex.org/I2799535048","https://openalex.org/I2799535048","https://openalex.org/I2802818602","https://openalex.org/I4210088668","https://openalex.org/I4210088668","https://openalex.org/I4210090127","https://openalex.org/I4210100083","https://openalex.org/I4210113730","https://openalex.org/I4210131494","https://openalex.org/I4210148025","https://openalex.org/I4210166444","https://openalex.org/I4405257220","https://openalex.org/I4405258862"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"E. Anterrieu","raw_affiliation_strings":["CESBIO, TOULOUSE, FRANCE"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CESBIO, TOULOUSE, FRANCE","institution_ids":["https://openalex.org/I4210100083"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108111949","display_name":"Fran\u00e7ois Cabot","orcid":null},"institutions":[{"id":"https://openalex.org/I4210100083","display_name":"Centre d'\u00c9tudes Spatiales de la Biosph\u00e8re","ror":"https://ror.org/01225hq90","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1327553481","https://openalex.org/I154202486","https://openalex.org/I2799535048","https://openalex.org/I2799535048","https://openalex.org/I2802818602","https://openalex.org/I4210088668","https://openalex.org/I4210088668","https://openalex.org/I4210090127","https://openalex.org/I4210100083","https://openalex.org/I4210113730","https://openalex.org/I4210131494","https://openalex.org/I4210148025","https://openalex.org/I4210166444","https://openalex.org/I4405257220","https://openalex.org/I4405258862"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"F. Cabot","raw_affiliation_strings":["CESBIO, TOULOUSE, FRANCE"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CESBIO, TOULOUSE, FRANCE","institution_ids":["https://openalex.org/I4210100083"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5052647280","display_name":"Yann H. Kerr","orcid":"https://orcid.org/0000-0001-6352-1717"},"institutions":[{"id":"https://openalex.org/I4210100083","display_name":"Centre d'\u00c9tudes Spatiales de la Biosph\u00e8re","ror":"https://ror.org/01225hq90","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1294671590","https://openalex.org/I1327553481","https://openalex.org/I154202486","https://openalex.org/I2799535048","https://openalex.org/I2799535048","https://openalex.org/I2802818602","https://openalex.org/I4210088668","https://openalex.org/I4210088668","https://openalex.org/I4210090127","https://openalex.org/I4210100083","https://openalex.org/I4210113730","https://openalex.org/I4210131494","https://openalex.org/I4210148025","https://openalex.org/I4210166444","https://openalex.org/I4405257220","https://openalex.org/I4405258862"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Y.H Kerr","raw_affiliation_strings":["CESBIO, TOULOUSE, FRANCE"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CESBIO, TOULOUSE, FRANCE","institution_ids":["https://openalex.org/I4210100083"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5041403783","display_name":"T. Amiot","orcid":null},"institutions":[{"id":"https://openalex.org/I2799535048","display_name":"Centre National d'\u00c9tudes Spatiales","ror":"https://ror.org/04h1h0y33","country_code":"FR","type":"government","lineage":["https://openalex.org/I2799535048"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"T. Amiot","raw_affiliation_strings":["CNES, TOULOUSE, FRANCE"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CNES, TOULOUSE, FRANCE","institution_ids":["https://openalex.org/I2799535048"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5003577792","display_name":"David Valat","orcid":null},"institutions":[{"id":"https://openalex.org/I2799535048","display_name":"Centre National d'\u00c9tudes Spatiales","ror":"https://ror.org/04h1h0y33","country_code":"FR","type":"government","lineage":["https://openalex.org/I2799535048"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"D. Valat","raw_affiliation_strings":["CNES, TOULOUSE, FRANCE"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CNES, TOULOUSE, FRANCE","institution_ids":["https://openalex.org/I2799535048"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5044146122","display_name":"Laurent Lestarquit","orcid":"https://orcid.org/0000-0001-7866-2109"},"institutions":[{"id":"https://openalex.org/I2799535048","display_name":"Centre National d'\u00c9tudes Spatiales","ror":"https://ror.org/04h1h0y33","country_code":"FR","type":"government","lineage":["https://openalex.org/I2799535048"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"L. Lestarquit","raw_affiliation_strings":["CNES, TOULOUSE, FRANCE"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"CNES, TOULOUSE, FRANCE","institution_ids":["https://openalex.org/I2799535048"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"7843","last_page":"7845"},"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/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9937999844551086,"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/T11333","display_name":"Climate change and permafrost","score":0.9934999942779541,"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/interferometry","display_name":"Interferometry","score":0.7950080037117004},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.7586955428123474},{"id":"https://openalex.org/keywords/radiometer","display_name":"Radiometer","score":0.5918925404548645},{"id":"https://openalex.org/keywords/synchronization","display_name":"Synchronization (alternating current)","score":0.5879899859428406},{"id":"https://openalex.org/keywords/satellite","display_name":"Satellite","score":0.5838212370872498},{"id":"https://openalex.org/keywords/aperture-synthesis","display_name":"Aperture synthesis","score":0.571185290813446},{"id":"https://openalex.org/keywords/detector","display_name":"Detector","score":0.5633324384689331},{"id":"https://openalex.org/keywords/image-resolution","display_name":"Image resolution","score":0.5465566515922546},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4895847737789154},{"id":"https://openalex.org/keywords/l-band","display_name":"L band","score":0.46080517768859863},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.4224962592124939},{"id":"https://openalex.org/keywords/cubesat","display_name":"CubeSat","score":0.4164939224720001},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.3134957253932953},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.234383225440979},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.12141963839530945},{"id":"https://openalex.org/keywords/astronomy","display_name":"Astronomy","score":0.08986935019493103},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.07785302400588989}],"concepts":[{"id":"https://openalex.org/C166689943","wikidata":"https://www.wikidata.org/wiki/Q850283","display_name":"Interferometry","level":2,"score":0.7950080037117004},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.7586955428123474},{"id":"https://openalex.org/C120189094","wikidata":"https://www.wikidata.org/wiki/Q850281","display_name":"Radiometer","level":2,"score":0.5918925404548645},{"id":"https://openalex.org/C2778562939","wikidata":"https://www.wikidata.org/wiki/Q1298791","display_name":"Synchronization (alternating current)","level":3,"score":0.5879899859428406},{"id":"https://openalex.org/C19269812","wikidata":"https://www.wikidata.org/wiki/Q26540","display_name":"Satellite","level":2,"score":0.5838212370872498},{"id":"https://openalex.org/C22094913","wikidata":"https://www.wikidata.org/wiki/Q1961815","display_name":"Aperture synthesis","level":3,"score":0.571185290813446},{"id":"https://openalex.org/C94915269","wikidata":"https://www.wikidata.org/wiki/Q1834857","display_name":"Detector","level":2,"score":0.5633324384689331},{"id":"https://openalex.org/C205372480","wikidata":"https://www.wikidata.org/wiki/Q210521","display_name":"Image resolution","level":2,"score":0.5465566515922546},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4895847737789154},{"id":"https://openalex.org/C133969743","wikidata":"https://www.wikidata.org/wiki/Q2362353","display_name":"L band","level":2,"score":0.46080517768859863},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.4224962592124939},{"id":"https://openalex.org/C2775936636","wikidata":"https://www.wikidata.org/wiki/Q1142930","display_name":"CubeSat","level":3,"score":0.4164939224720001},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.3134957253932953},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.234383225440979},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.12141963839530945},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.08986935019493103},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.07785302400588989}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss47720.2021.9554075","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss47720.2021.9554075","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8600000143051147,"display_name":"Life below water","id":"https://metadata.un.org/sdg/14"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":7,"referenced_works":["https://openalex.org/W2115817712","https://openalex.org/W2116779222","https://openalex.org/W2155459956","https://openalex.org/W2984546691","https://openalex.org/W2988026612","https://openalex.org/W3206339710","https://openalex.org/W6802711070"],"related_works":["https://openalex.org/W1995860325","https://openalex.org/W2169554290","https://openalex.org/W2118353260","https://openalex.org/W2120660325","https://openalex.org/W2093099022","https://openalex.org/W2041837781","https://openalex.org/W2151515459","https://openalex.org/W2017943092","https://openalex.org/W2548732733","https://openalex.org/W2516103524"],"abstract_inverted_index":{"The":[0],"Soil":[1],"Moisture":[2],"and":[3,41,129,145],"Ocean":[4],"Salinity":[5],"(SMOS)":[6],"satellite":[7],"has":[8,93],"provided,":[9],"for":[10,43,73],"the":[11,33,36,44,56,66,75,95,105,133,153,164],"very":[12],"first":[13],"time,":[14],"systematic":[15],"passive":[16],"L-band":[17,49,97],"(1420":[18],"-":[19],"1427":[20],"MHz)":[21],"measurements":[22],"from":[23],"space":[24],"with":[25,160],"a":[26,62,71,81,117],"spatial":[27,76],"resolution":[28],"of":[29,35,47,58,120,155],"~v40":[30],"Km.":[31],"Within":[32],"frame":[34],"studies":[37],"conducted":[38],"by":[39,136,152],"CESBIO":[40],"CNES":[42,92],"next":[45],"generations":[46],"high-resolution":[48],"imaging":[50],"radiometers":[51],"based":[52],"on":[53,116],"aperture":[54],"synthesis,":[55],"concept":[57],"unconnected":[59,109],"interferometry":[60,110],"plays":[61],"key":[63],"role":[64],"in":[65,111,125],"roadmap":[67],"because":[68],"it":[69],"is":[70,90,150],"solution":[72],"improving":[74],"resolution.":[77],"Before":[78],"deploying":[79],"such":[80],"mission,":[82],"many":[83],"issues":[84],"have":[85],"to":[86,107,131,142,158],"be":[87],"solved.":[88],"This":[89,148],"why":[91],"initiated":[94],"Unconnected":[96],"Interferometer":[98],"Demonstrator":[99],"(ULID)":[100],"which":[101],"aims":[102],"at":[103],"demonstrating":[104],"capability":[106],"operate":[108],"orbit.":[112],"ULID":[113],"system":[114],"relies":[115],"small":[118],"constellation":[119],"three":[121],"identical":[122],"nano-satellites":[123],"flying":[124],"close":[126],"range":[127],"formation":[128],"transmitting":[130],"ground":[132],"signals":[134],"acquired":[135],"similar":[137],"detectors":[138],"onboard":[139],"all":[140],"satellites":[141],"allow":[143],"synchronization":[144,161],"correlation":[146],"computation.":[147],"contribution":[149],"concerned":[151],"demonstration":[154],"our":[156],"ability":[157],"cope":[159],"problems":[162],"between":[163],"detectors.":[165]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
