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The digital beam forming technique in AgileDARN high-frequency radar
https://nipr.repo.nii.ac.jp/records/16469
https://nipr.repo.nii.ac.jp/records/16469a389f7ac-e2f8-4284-9651-6bf55d4dbc9e
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-07-29 | |||||
タイトル | ||||||
タイトル | The digital beam forming technique in AgileDARN high-frequency radar | |||||
タイトル | ||||||
タイトル | The digital beam forming technique in AgileDARN high-frequency radar | |||||
言語 | en | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Digital beam forming (DBF) | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Field-programmable gate array (FPGA) | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Dolph-Chebyshev window | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Agile dual auroral radar network (AgileDARN) | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Super dual auroral radar network (SuperDARN) | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Yan, Jingye
× Yan, Jingye× Deng, Xiang× Lan, Ailan× Wu, Ji× Zhang, Jiaojiao× Wang, Wei× Qiu, Hongbin |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | An all-digital agile dual auroral radar network (AgileDARN) was developed by the National Space Science Center, Chinese Academic of Sciences (NSSC, CAS). AgileDARN can achieve higher performance and greater flexibility based on highly digitized hardware and its distributed digital signal processing system. Multiple receiving beams can be created within the transmitting beam pattern better to determine the direction of arrival (DOA). In each beam, seven real-time azimuthal sub-beams are synthesized simultaneously with 16 main digital receiver channels. Each sub-beam detects the echo around the transmitting boresight with an angular separation of 0.46°. Comparing the echoes from different sub-beams, the azimuthal geolocation of the irregularities can be improved when their volume is smaller than the beamwidth. Furthermore, the Chebyshev window enables the control of the sidelobes and antenna pattern, effectively suppressing interference. To implement multi-beam forming, extra processing resources of the field-programmable gate array (FGPA) are required. This paper introduces the signal processing procedure and analyzes the requirements on the FPGA resources,and the technique is validated with meteor echoes received by the AgileDARN radar. The azimuthal geolocation of echoes increases by seven times compared with the single beamforming SuperDARN radar. | |||||
書誌情報 |
en : Polar Science 巻 28, p. 100595, 発行日 2021-06 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.polar.2020.100595 | |||||
関連名称 | 10.1016/j.polar.2020.100595 |