{"id":"https://openalex.org/W2986383413","doi":"https://doi.org/10.1109/lgrs.2019.2950671","title":"Internal Calibration System Using Learning Algorithm With Gradient Descent","display_name":"Internal Calibration System Using Learning Algorithm With Gradient Descent","publication_year":2019,"publication_date":"2019-11-14","ids":{"openalex":"https://openalex.org/W2986383413","doi":"https://doi.org/10.1109/lgrs.2019.2950671","mag":"2986383413"},"language":"en","primary_location":{"id":"doi:10.1109/lgrs.2019.2950671","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2019.2950671","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Geoscience and Remote Sensing Letters","raw_type":"journal-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/A5056944381","display_name":"Chanyong Jung","orcid":null},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Chan-Yong Jung","raw_affiliation_strings":["Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086046045","display_name":"Kyung-Bin Bae","orcid":"https://orcid.org/0000-0002-1792-7422"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Kyung-Bin Bae","raw_affiliation_strings":["Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101433776","display_name":"Dong-Chan Kim","orcid":"https://orcid.org/0000-0001-8870-3605"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Dong-Chan Kim","raw_affiliation_strings":["Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5008254626","display_name":"Seong\u2010Ook Park","orcid":"https://orcid.org/0000-0002-2850-8063"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Seong-Ook Park","raw_affiliation_strings":["Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"Microwave and Antenna Laboratory, School of Electrical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5056944381"],"corresponding_institution_ids":["https://openalex.org/I157485424"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.11304462,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"17","issue":"9","first_page":"1503","last_page":"1507"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9979000091552734,"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":0.9979000091552734,"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/T11946","display_name":"Antenna Design and Optimization","score":0.9972000122070312,"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/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9915000200271606,"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/radar","display_name":"Radar","score":0.6619219779968262},{"id":"https://openalex.org/keywords/calibration","display_name":"Calibration","score":0.6200037002563477},{"id":"https://openalex.org/keywords/offset","display_name":"Offset (computer science)","score":0.5786832571029663},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5600646734237671},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.546280562877655},{"id":"https://openalex.org/keywords/gradient-descent","display_name":"Gradient descent","score":0.5428590178489685},{"id":"https://openalex.org/keywords/amplifier","display_name":"Amplifier","score":0.5363019704818726},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.25081565976142883},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.24173176288604736},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.24118611216545105},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1714317500591278}],"concepts":[{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.6619219779968262},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.6200037002563477},{"id":"https://openalex.org/C175291020","wikidata":"https://www.wikidata.org/wiki/Q1156822","display_name":"Offset (computer science)","level":2,"score":0.5786832571029663},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5600646734237671},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.546280562877655},{"id":"https://openalex.org/C153258448","wikidata":"https://www.wikidata.org/wiki/Q1199743","display_name":"Gradient descent","level":3,"score":0.5428590178489685},{"id":"https://openalex.org/C194257627","wikidata":"https://www.wikidata.org/wiki/Q211554","display_name":"Amplifier","level":3,"score":0.5363019704818726},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.25081565976142883},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.24173176288604736},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.24118611216545105},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1714317500591278},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lgrs.2019.2950671","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2019.2950671","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Geoscience and Remote Sensing Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.8199999928474426}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W331769727","https://openalex.org/W1545037511","https://openalex.org/W1569512666","https://openalex.org/W1660059720","https://openalex.org/W2002459665","https://openalex.org/W2142270012","https://openalex.org/W2143504187","https://openalex.org/W2171234155","https://openalex.org/W2215012683","https://openalex.org/W2545124317","https://openalex.org/W2592031916","https://openalex.org/W2608496175","https://openalex.org/W2617848287","https://openalex.org/W2919184544","https://openalex.org/W6681421962"],"related_works":["https://openalex.org/W2137676555","https://openalex.org/W2017572878","https://openalex.org/W2515605785","https://openalex.org/W3022853057","https://openalex.org/W2377728464","https://openalex.org/W4388308858","https://openalex.org/W4245326239","https://openalex.org/W1507225775","https://openalex.org/W2046645015","https://openalex.org/W2745139775"],"abstract_inverted_index":{"We":[0,44],"present":[1],"a":[2,9,25,35,40,51,55,73],"novel":[3],"approach":[4],"to":[5,46],"internal":[6,17,91],"calibration":[7,18,62,92],"of":[8,24,82,96,115],"radar":[10,14],"system.":[11],"A":[12],"Ku-band":[13],"system":[15,26],"with":[16,54],"paths":[19],"is":[20,27,76],"designed.":[21],"Thermal":[22],"drift":[23,49],"mainly":[28],"caused":[29],"by":[30],"active":[31],"components,":[32],"which":[33],"are":[34,64,98,117],"high-power":[36],"amplifier":[37,42],"(HPA)":[38],"and":[39,61,104,121],"low-noise":[41],"(LNA).":[43],"aimed":[45],"reduce":[47],"the":[48,67,70,80,89,102,108,112],"using":[50],"learning":[52,71],"algorithm":[53],"gradient-descent":[56],"method.":[57,93],"Hardware":[58],"offset":[59],"factors":[60,63],"introduced":[65],"for":[66,101,107,119,123],"process.":[68],"In":[69,110],"algorithm,":[72],"penalty":[74],"term":[75],"formed":[77],"based":[78],"on":[79],"analysis":[81],"local":[83],"minimum":[84],"points.":[85],"The":[86],"result":[87],"verifies":[88],"proposed":[90],"Maximum":[94],"deviations":[95,114],"gain":[97],"0.0477":[99],"dB":[100,106],"HPA":[103,120],"0.0132":[105],"LNA.":[109],"addition,":[111],"maximum":[113],"phase":[116],"0.2481\u00b0":[118],"0.0722\u00b0":[122],"LNA,":[124],"respectively.":[125]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2023,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}