{"id":"https://openalex.org/W3185125101","doi":"https://doi.org/10.1109/igarss47720.2021.9553427","title":"KAPRI: A Bistatic Full-Polarimetric Interferometric Real-Aperture Radar System for Monitoring of Natural Environments","display_name":"KAPRI: A Bistatic Full-Polarimetric Interferometric Real-Aperture Radar System for Monitoring of Natural Environments","publication_year":2021,"publication_date":"2021-07-11","ids":{"openalex":"https://openalex.org/W3185125101","doi":"https://doi.org/10.1109/igarss47720.2021.9553427","mag":"3185125101"},"language":"en","primary_location":{"id":"doi:10.1109/igarss47720.2021.9553427","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss47720.2021.9553427","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":"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/A5071171777","display_name":"Marcel \u0160tefko","orcid":"https://orcid.org/0000-0002-7736-2611"},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]}],"countries":["CH"],"is_corresponding":true,"raw_author_name":"Marcel Stefko","raw_affiliation_strings":["Chair of Earth Observation and Remote Sensing, ETH Zurich, Switzerland"],"affiliations":[{"raw_affiliation_string":"Chair of Earth Observation and Remote Sensing, ETH Zurich, Switzerland","institution_ids":["https://openalex.org/I35440088"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062774484","display_name":"Othmar Frey","orcid":"https://orcid.org/0000-0003-1795-6087"},"institutions":[{"id":"https://openalex.org/I4210155440","display_name":"Gamma Remote Sensing (Switzerland)","ror":"https://ror.org/05spbxe41","country_code":"CH","type":"company","lineage":["https://openalex.org/I4210155440"]},{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Othmar Frey","raw_affiliation_strings":["Chair of Earth Observation and Remote Sensing, ETH Zurich, Switzerland","GAMMA Remote Sensing, G\u00fcmligen, Switzerland"],"affiliations":[{"raw_affiliation_string":"Chair of Earth Observation and Remote Sensing, ETH Zurich, Switzerland","institution_ids":["https://openalex.org/I35440088"]},{"raw_affiliation_string":"GAMMA Remote Sensing, G\u00fcmligen, Switzerland","institution_ids":["https://openalex.org/I4210155440"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063888835","display_name":"Charles Werner","orcid":"https://orcid.org/0000-0001-9043-0220"},"institutions":[{"id":"https://openalex.org/I4210155440","display_name":"Gamma Remote Sensing (Switzerland)","ror":"https://ror.org/05spbxe41","country_code":"CH","type":"company","lineage":["https://openalex.org/I4210155440"]}],"countries":["CH"],"is_corresponding":false,"raw_author_name":"Charles Werner","raw_affiliation_strings":["GAMMA Remote Sensing, G\u00fcmligen, Switzerland"],"affiliations":[{"raw_affiliation_string":"GAMMA Remote Sensing, G\u00fcmligen, Switzerland","institution_ids":["https://openalex.org/I4210155440"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5053177233","display_name":"Irena Hajnsek","orcid":"https://orcid.org/0000-0002-0926-3283"},"institutions":[{"id":"https://openalex.org/I35440088","display_name":"ETH Zurich","ror":"https://ror.org/05a28rw58","country_code":"CH","type":"education","lineage":["https://openalex.org/I2799323385","https://openalex.org/I35440088"]},{"id":"https://openalex.org/I2898391981","display_name":"Deutsches Zentrum f\u00fcr Luft- und Raumfahrt e. V. (DLR)","ror":"https://ror.org/04bwf3e34","country_code":"DE","type":"facility","lineage":["https://openalex.org/I1305996414","https://openalex.org/I2898391981"]}],"countries":["CH","DE"],"is_corresponding":false,"raw_author_name":"Irena Hajnsek","raw_affiliation_strings":["Chair of Earth Observation and Remote Sensing, ETH Zurich, Switzerland","Microwaves and Radar Institute, German Aerospace Center - DLR, Oberpfaffenhofen, Germany"],"affiliations":[{"raw_affiliation_string":"Chair of Earth Observation and Remote Sensing, ETH Zurich, Switzerland","institution_ids":["https://openalex.org/I35440088"]},{"raw_affiliation_string":"Microwaves and Radar Institute, German Aerospace Center - DLR, Oberpfaffenhofen, Germany","institution_ids":["https://openalex.org/I2898391981"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5071171777"],"corresponding_institution_ids":["https://openalex.org/I35440088"],"apc_list":null,"apc_paid":null,"fwci":2.72,"has_fulltext":false,"cited_by_count":8,"citation_normalized_percentile":{"value":0.90116376,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1950","last_page":"1953"},"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":0.9998000264167786,"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":0.9998000264167786,"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/T11312","display_name":"Soil Moisture and Remote Sensing","score":0.9998000264167786,"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/T10644","display_name":"Cryospheric studies and observations","score":0.9997000098228455,"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/bistatic-radar","display_name":"Bistatic radar","score":0.9387136697769165},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.7889289855957031},{"id":"https://openalex.org/keywords/polarimetry","display_name":"Polarimetry","score":0.6879451274871826},{"id":"https://openalex.org/keywords/calibration","display_name":"Calibration","score":0.6329050064086914},{"id":"https://openalex.org/keywords/passive-radar","display_name":"Passive radar","score":0.6274124979972839},{"id":"https://openalex.org/keywords/radar-engineering-details","display_name":"Radar engineering details","score":0.5575571060180664},{"id":"https://openalex.org/keywords/synthetic-aperture-radar","display_name":"Synthetic aperture radar","score":0.5348085165023804},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5076586008071899},{"id":"https://openalex.org/keywords/inverse-synthetic-aperture-radar","display_name":"Inverse synthetic aperture radar","score":0.5025765895843506},{"id":"https://openalex.org/keywords/interferometry","display_name":"Interferometry","score":0.4782066345214844},{"id":"https://openalex.org/keywords/radar-imaging","display_name":"Radar imaging","score":0.43553364276885986},{"id":"https://openalex.org/keywords/side-looking-airborne-radar","display_name":"Side looking airborne radar","score":0.41718196868896484},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.37458133697509766},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.2904742956161499},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.1862596571445465},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.11285552382469177},{"id":"https://openalex.org/keywords/scattering","display_name":"Scattering","score":0.10508012771606445},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.09872609376907349}],"concepts":[{"id":"https://openalex.org/C100102862","wikidata":"https://www.wikidata.org/wiki/Q2625855","display_name":"Bistatic radar","level":4,"score":0.9387136697769165},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.7889289855957031},{"id":"https://openalex.org/C28493345","wikidata":"https://www.wikidata.org/wiki/Q899381","display_name":"Polarimetry","level":3,"score":0.6879451274871826},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.6329050064086914},{"id":"https://openalex.org/C151120012","wikidata":"https://www.wikidata.org/wiki/Q2143008","display_name":"Passive radar","level":5,"score":0.6274124979972839},{"id":"https://openalex.org/C134406370","wikidata":"https://www.wikidata.org/wiki/Q832005","display_name":"Radar engineering details","level":4,"score":0.5575571060180664},{"id":"https://openalex.org/C87360688","wikidata":"https://www.wikidata.org/wiki/Q740686","display_name":"Synthetic aperture radar","level":2,"score":0.5348085165023804},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5076586008071899},{"id":"https://openalex.org/C109094680","wikidata":"https://www.wikidata.org/wiki/Q6060432","display_name":"Inverse synthetic aperture radar","level":4,"score":0.5025765895843506},{"id":"https://openalex.org/C166689943","wikidata":"https://www.wikidata.org/wiki/Q850283","display_name":"Interferometry","level":2,"score":0.4782066345214844},{"id":"https://openalex.org/C10929652","wikidata":"https://www.wikidata.org/wiki/Q7279985","display_name":"Radar imaging","level":3,"score":0.43553364276885986},{"id":"https://openalex.org/C62282787","wikidata":"https://www.wikidata.org/wiki/Q831483","display_name":"Side looking airborne radar","level":5,"score":0.41718196868896484},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.37458133697509766},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.2904742956161499},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.1862596571445465},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.11285552382469177},{"id":"https://openalex.org/C191486275","wikidata":"https://www.wikidata.org/wiki/Q210028","display_name":"Scattering","level":2,"score":0.10508012771606445},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.09872609376907349},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss47720.2021.9553427","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss47720.2021.9553427","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":[{"id":"https://metadata.un.org/sdg/15","display_name":"Life in Land","score":0.6100000143051147}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W2018115270","https://openalex.org/W2095877172","https://openalex.org/W2153899873","https://openalex.org/W2158898891","https://openalex.org/W2204411516","https://openalex.org/W2205728179","https://openalex.org/W2359212910","https://openalex.org/W2781079034","https://openalex.org/W2783657298","https://openalex.org/W2984102104","https://openalex.org/W6687953763"],"related_works":["https://openalex.org/W2151297847","https://openalex.org/W2549442608","https://openalex.org/W1577154265","https://openalex.org/W4400660130","https://openalex.org/W274378598","https://openalex.org/W2125716714","https://openalex.org/W2541104979","https://openalex.org/W4380451819","https://openalex.org/W4378227101","https://openalex.org/W2364929862"],"abstract_inverted_index":{"In":[0],"this":[1],"submission":[2],"the":[3,22,41,53],"bistatic":[4,31,42,62,78],"operation":[5],"mode":[6],"of":[7,37,64,70,72],"KAPRI,":[8],"a":[9,47],"polarimetric-interferometric,":[10],"ground-based,":[11],"real-aperture,":[12],"Ku-band,":[13],"FMCW":[14],"radar":[15],"is":[16],"presented.":[17,67],"Its":[18],"possible":[19],"configurations":[20],"and":[21,46,52],"synchronization":[23],"procedures":[24],"needed":[25],"to":[26],"achieve":[27],"distortion-free":[28],"single-look":[29],"complex":[30],"images":[32],"are":[33,44,59,66,80],"described.":[34],"The":[35],"challenges":[36],"polarimetric":[38,55],"calibration":[39,50,56,63],"in":[40],"regime":[43],"outlined,":[45],"novel":[48],"active":[49],"device":[51],"associated":[54],"method":[57],"which":[58],"used":[60],"for":[61],"KAPRI":[65,79],"First":[68],"results":[69],"observations":[71],"natural":[73],"environments":[74],"(vegetation,":[75],"snow)":[76],"using":[77],"shown.":[81]},"counts_by_year":[{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}