{"id":"https://openalex.org/W2056619860","doi":"https://doi.org/10.1109/igarss.2010.5653144","title":"The digital wide band chirp pulse generator and processor for Pi-SAR2","display_name":"The digital wide band chirp pulse generator and processor for Pi-SAR2","publication_year":2010,"publication_date":"2010-07-01","ids":{"openalex":"https://openalex.org/W2056619860","doi":"https://doi.org/10.1109/igarss.2010.5653144","mag":"2056619860"},"language":"en","primary_location":{"id":"doi:10.1109/igarss.2010.5653144","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2010.5653144","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 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/A5109968379","display_name":"Shingo Matsuo","orcid":null},"institutions":[{"id":"https://openalex.org/I118347220","display_name":"NEC (Japan)","ror":"https://ror.org/04jndar25","country_code":"JP","type":"company","lineage":["https://openalex.org/I118347220"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shingo Matsuo","raw_affiliation_strings":["Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","institution_ids":["https://openalex.org/I118347220"]},{"raw_affiliation_string":"NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan","institution_ids":["https://openalex.org/I118347220"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5111461560","display_name":"Takashi Fujimura","orcid":null},"institutions":[{"id":"https://openalex.org/I118347220","display_name":"NEC (Japan)","ror":"https://ror.org/04jndar25","country_code":"JP","type":"company","lineage":["https://openalex.org/I118347220"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takashi Fujimura","raw_affiliation_strings":["Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","institution_ids":["https://openalex.org/I118347220"]},{"raw_affiliation_string":"NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan","institution_ids":["https://openalex.org/I118347220"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067479297","display_name":"Isamu Oihara","orcid":null},"institutions":[{"id":"https://openalex.org/I118347220","display_name":"NEC (Japan)","ror":"https://ror.org/04jndar25","country_code":"JP","type":"company","lineage":["https://openalex.org/I118347220"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Isamu Oihara","raw_affiliation_strings":["Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","institution_ids":["https://openalex.org/I118347220"]},{"raw_affiliation_string":"NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan","institution_ids":["https://openalex.org/I118347220"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022467141","display_name":"Eiji Totsuka","orcid":null},"institutions":[{"id":"https://openalex.org/I118347220","display_name":"NEC (Japan)","ror":"https://ror.org/04jndar25","country_code":"JP","type":"company","lineage":["https://openalex.org/I118347220"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Eiji Totsuka","raw_affiliation_strings":["Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","institution_ids":["https://openalex.org/I118347220"]},{"raw_affiliation_string":"NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan","institution_ids":["https://openalex.org/I118347220"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027189744","display_name":"Yoshitaka Ohura","orcid":null},"institutions":[{"id":"https://openalex.org/I118347220","display_name":"NEC (Japan)","ror":"https://ror.org/04jndar25","country_code":"JP","type":"company","lineage":["https://openalex.org/I118347220"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yoshitaka Ohura","raw_affiliation_strings":["Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","institution_ids":["https://openalex.org/I118347220"]},{"raw_affiliation_string":"NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan","institution_ids":["https://openalex.org/I118347220"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109361842","display_name":"Tsunekazu Kimura","orcid":null},"institutions":[{"id":"https://openalex.org/I118347220","display_name":"NEC (Japan)","ror":"https://ror.org/04jndar25","country_code":"JP","type":"company","lineage":["https://openalex.org/I118347220"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Tsunekazu Kimura","raw_affiliation_strings":["Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Guidance and Electro-Optics Division, NEC Corporation Limited, Fuchu, Tokyo, Japan","institution_ids":["https://openalex.org/I118347220"]},{"raw_affiliation_string":"NEC Corporation (NEC), Guidance and Electro-Optics Division, Nisshin-cho 1-10, Fuchu, Tokyo, 183-8501 Japan","institution_ids":["https://openalex.org/I118347220"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I118347220"],"apc_list":null,"apc_paid":null,"fwci":17.2157,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.98593151,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":"49","issue":null,"first_page":"2872","last_page":"2875"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9994999766349792,"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/T11038","display_name":"Advanced SAR Imaging Techniques","score":0.9994999766349792,"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/T10801","display_name":"Synthetic Aperture Radar (SAR) Applications and Techniques","score":0.9991000294685364,"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/T10891","display_name":"Radar Systems and Signal Processing","score":0.9657999873161316,"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/chirp","display_name":"Chirp","score":0.9115096926689148},{"id":"https://openalex.org/keywords/chirp-spread-spectrum","display_name":"Chirp spread spectrum","score":0.7396531701087952},{"id":"https://openalex.org/keywords/bandwidth","display_name":"Bandwidth (computing)","score":0.7193235158920288},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6348347663879395},{"id":"https://openalex.org/keywords/pulse-generator","display_name":"Pulse generator","score":0.5616734027862549},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5208368897438049},{"id":"https://openalex.org/keywords/digital-signal-processor","display_name":"Digital signal processor","score":0.5141103863716125},{"id":"https://openalex.org/keywords/offset","display_name":"Offset (computer science)","score":0.46743884682655334},{"id":"https://openalex.org/keywords/signal-generator","display_name":"Signal generator","score":0.46615350246429443},{"id":"https://openalex.org/keywords/pulse-compression","display_name":"Pulse compression","score":0.43418529629707336},{"id":"https://openalex.org/keywords/digital-signal-processing","display_name":"Digital signal processing","score":0.3392506241798401},{"id":"https://openalex.org/keywords/computer-hardware","display_name":"Computer hardware","score":0.32940709590911865},{"id":"https://openalex.org/keywords/radar","display_name":"Radar","score":0.28848040103912354},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.25250914692878723},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.2463626265525818},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.23776030540466309},{"id":"https://openalex.org/keywords/spread-spectrum","display_name":"Spread spectrum","score":0.23310622572898865},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.2228965163230896},{"id":"https://openalex.org/keywords/direct-sequence-spread-spectrum","display_name":"Direct-sequence spread spectrum","score":0.1802014708518982},{"id":"https://openalex.org/keywords/chip","display_name":"Chip","score":0.11545726656913757},{"id":"https://openalex.org/keywords/jitter","display_name":"Jitter","score":0.09404507279396057}],"concepts":[{"id":"https://openalex.org/C132794960","wikidata":"https://www.wikidata.org/wiki/Q27304","display_name":"Chirp","level":3,"score":0.9115096926689148},{"id":"https://openalex.org/C105152959","wikidata":"https://www.wikidata.org/wiki/Q1074780","display_name":"Chirp spread spectrum","level":5,"score":0.7396531701087952},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.7193235158920288},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6348347663879395},{"id":"https://openalex.org/C51319974","wikidata":"https://www.wikidata.org/wiki/Q3509564","display_name":"Pulse generator","level":3,"score":0.5616734027862549},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5208368897438049},{"id":"https://openalex.org/C161611012","wikidata":"https://www.wikidata.org/wiki/Q106370","display_name":"Digital signal processor","level":3,"score":0.5141103863716125},{"id":"https://openalex.org/C175291020","wikidata":"https://www.wikidata.org/wiki/Q1156822","display_name":"Offset (computer science)","level":2,"score":0.46743884682655334},{"id":"https://openalex.org/C207912722","wikidata":"https://www.wikidata.org/wiki/Q1259123","display_name":"Signal generator","level":3,"score":0.46615350246429443},{"id":"https://openalex.org/C145995521","wikidata":"https://www.wikidata.org/wiki/Q639897","display_name":"Pulse compression","level":3,"score":0.43418529629707336},{"id":"https://openalex.org/C84462506","wikidata":"https://www.wikidata.org/wiki/Q173142","display_name":"Digital signal processing","level":2,"score":0.3392506241798401},{"id":"https://openalex.org/C9390403","wikidata":"https://www.wikidata.org/wiki/Q3966","display_name":"Computer hardware","level":1,"score":0.32940709590911865},{"id":"https://openalex.org/C554190296","wikidata":"https://www.wikidata.org/wiki/Q47528","display_name":"Radar","level":2,"score":0.28848040103912354},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.25250914692878723},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.2463626265525818},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.23776030540466309},{"id":"https://openalex.org/C105344744","wikidata":"https://www.wikidata.org/wiki/Q958957","display_name":"Spread spectrum","level":3,"score":0.23310622572898865},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2228965163230896},{"id":"https://openalex.org/C194491627","wikidata":"https://www.wikidata.org/wiki/Q1334354","display_name":"Direct-sequence spread spectrum","level":4,"score":0.1802014708518982},{"id":"https://openalex.org/C165005293","wikidata":"https://www.wikidata.org/wiki/Q1074500","display_name":"Chip","level":2,"score":0.11545726656913757},{"id":"https://openalex.org/C134652429","wikidata":"https://www.wikidata.org/wiki/Q1052698","display_name":"Jitter","level":2,"score":0.09404507279396057},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0},{"id":"https://openalex.org/C520434653","wikidata":"https://www.wikidata.org/wiki/Q38867","display_name":"Laser","level":2,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/igarss.2010.5653144","is_oa":false,"landing_page_url":"https://doi.org/10.1109/igarss.2010.5653144","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2010 IEEE International Geoscience and Remote Sensing Symposium","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.5899999737739563,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320335839","display_name":"National Institute of Information and Communications Technology","ror":"https://ror.org/016bgq349"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":2,"referenced_works":["https://openalex.org/W2134484381","https://openalex.org/W2163443913"],"related_works":["https://openalex.org/W1594257291","https://openalex.org/W2367110990","https://openalex.org/W987687253","https://openalex.org/W2366328144","https://openalex.org/W2521085848","https://openalex.org/W2383141647","https://openalex.org/W2093171448","https://openalex.org/W3123180315","https://openalex.org/W2183264649","https://openalex.org/W2151664728"],"abstract_inverted_index":{"This":[0,28],"paper":[1],"shows":[2],"the":[3,6,9,21,36,46,73,84],"technology":[4],"and":[5,16,20,32,44],"performance":[7],"of":[8,23,68],"digital":[10],"wide":[11],"band":[12],"chirp":[13,29,42],"pulse":[14,30,43],"generator":[15,31],"processor":[17,33],"for":[18,57,72],"Pi-SAR2,":[19],"history":[22],"its":[24],"development":[25],"at":[26],"NEC.":[27],"can":[34],"generate":[35],"150,":[37],"300":[38],"or":[39],"500MHz":[40],"bandwidth":[41,48,87],"process":[45],"same":[47],"video":[49,53,70],"signal.":[50],"The":[51],"offset":[52],"method":[54,71],"is":[55],"applied":[56],"this":[58,89],"component":[59],"in":[60],"order":[61],"to":[62],"achieve":[63],"small":[64],"phase":[65],"error,":[66],"instead":[67],"I/Q":[69],"conventional":[74],"SAR":[75,81],"system.":[76],"Pi-SAR2":[77],"realized":[78],"0.3m":[79],"resolution":[80],"image":[82],"with":[83],"500":[85],"MHz":[86],"using":[88],"component.":[90]},"counts_by_year":[{"year":2017,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":1}],"updated_date":"2026-06-26T08:34:08.712188","created_date":"2025-10-10T00:00:00"}
