Koji Nishimura

Profile Information

Affiliation: Research Institute for Sustainable Humanosphere, Kyoto University

Researcher number: 60455475
J-GLOBAL ID: 201301085478114520
researchmap Member ID: B000234090

External link: http://kaken.nii.ac.jp/d/r/60455475.ja.html

Research Interests

Research Areas

Research History

Sep, 2013

Research Organization of Information and Systems
Apr, 2007

Research Organization of Information and Systems

Papers

Adaptive Capon beamforming for lensless electron cyclotron emission imaging with high spatial resolution

H. Idei, M. Fukuyama, S. Sakai, K. Mishra, K. Nishimura, R. Ikezoe, T. Onchi, T. Ido, K. Hanada

Review of Scientific Instruments, 93(10) 103531-103531, Oct 1, 2022
Activities of the Polar Environment Data Science Center of ROIS-DS, Japan

Akira Kadokura, Masaki Kanao, Hironori Yabuki, Yoshimasa Tanaka, Koji Nishimura

Data Science Journal, 21, Apr 20, 2022
Aerial Clutter Suppression in a Wind Profiler Radar With Antenna Subarrays

Masayuki K. Yamamoto, Seiji Kawamura, Katsuyuki Imai, Hiroshi Yamaguchi, Koji Saito, Koji Nishimura

IEEE Transactions on Geoscience and Remote Sensing, 60 1-14, 2022
Mesospheric ionization during substorm growth phase

Kiyoka Murase, Ryuho Kataoka, Takanori Nishiyama, Koji Nishimura, Taishi Hashimoto, Yoshimasa Tanaka, Akira Kadokura, Yoshihiro Tomikawa, Masaki Tsutsumi, Yasunobu Ogawa …

Journal of Space Weather and Space Climate, 12 18-18, 2022
Weakening of Polar Mesosphere Winter Echo and Turbulent Energy Dissipation Rates After a Stratospheric Sudden Warming in the Southern Hemisphere in 2019

M. Kohma, K. Sato, K. Nishimura, M. Tsutsumi

Geophysical Research Letters, 48(10), May 28, 2021
Development of an Antarctic Atmospheric Radar

Toru Sato, Kaoru Sato, Masaki Tsutsumi, Koji Nishimura, Tasishi Hashimoto

2020 International Symposium on Antennas and Propagation (ISAP), Jan 25, 2021
Design of the radio fence of the EISCAT_3D radar for human safety using method of moment and geometrical theory of diffraction

Taishi Hashimoto, Koji Nishimura, Yasunobu Ogawa, Hiroshi Miyaoka, Craig Heinselman

2020 International Symposium on Antennas and Propagation, ISAP 2020, 627-628, Jan 25, 2021
Design of the radio fence of the EISCAT_3D radar for human safety using Method of Moment and Geometrical Theory of Diffraction

Taishi Hashimoto, Koji Nishimura, Yasunobu Ogawa, Hiroshi Miyaoka, Craig Heinselman

2020 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP), 627-628, 2021
Relationship between radar cross section and optical magnitude based on radar and optical simultaneous observations of faint meteors

Ryou Ohsawa, Akira Hirota, Kohei Morita, Shinsuke Abe, Daniel Kastinen, Johan Kero, Csilla Szasz, Yasunori Fujiwara, Takuji Nakamura, Koji Nishimura …

Planetary and Space Science, 194 105011-105011, Dec, 2020
Spectral Observation Theory and Beam Debroadening Algorithm for Atmospheric Radar

Koji Nishimura, Masashi Kohma, Kaoru Sato, Toru Sato

IEEE Transactions on Geoscience and Remote Sensing, 58(10) 6767-6775, Oct, 2020
A Statistical Analysis of the Energy Dissipation Rate Estimated From the PMWE Spectral Width in the Antarctic

M. Kohma, K. Sato, K. Nishimura, M. Tsutsumi, T. Sato

Journal of Geophysical Research: Atmospheres, 125(16), Aug 27, 2020
Analytical Expression of Capon Spectrum for Two Uncorrelated Signals Using the Inner Product of Mode Vectors

Takuya SAKAMOTO, Koji NISHIMURA

IEICE Transactions on Communications, E103.B(4) 452-457, Apr 1, 2020
Direct Comparison Between Magnetospheric Plasma Waves and Polar Mesosphere Winter Echoes in Both Hemispheres

Y.‐M. Tanaka, T. Nishiyama, A. Kadokura, M. Ozaki, Y. Miyoshi, K. Shiokawa, S.‐I. Oyama, R. Kataoka, M. Tsutsumi, K. Nishimura …

Journal of Geophysical Research: Space Physics, 124(11) 9626-9639, Nov, 2019
First Incoherent Scatter Measurements and Adaptive Suppression of Field-Aligned Irregularities by the PANSY Radar at Syowa Station, Antarctic

Taishi Hashimoto, Akinori Saito, Koji Nishimura, Masaki Tsutsumi, Kaoru Sato, Toru Sato

Journal of Atmospheric and Oceanic Technology, 36(9) 1881-1888, Sep, 2019 Peer-reviewed
Estimate of Turbulent Energy Dissipation Rate From the VHF Radar and Radiosonde Observations in the Antarctic

M. Kohma, K. Sato, Y. Tomikawa, K. Nishimura, T. Sato

Journal of Geophysical Research: Atmospheres, 124(6) 2976-2993, Mar 27, 2019
Development of Next-Generation Wind Profiler Radar

山本真之, 川村誠治, 西村耕司, 今井克之, 斎藤浩二, 浜田隆行, 山口博史, 中北英一, 山口弘誠

情報通信研究機構研究報告, 65(1) 27-42, 2019
A Beam De-Broadening Algorithm for Atmospheric Radar

Koji Nishimura, Masashi Kohma, Kaoru Sato, Toru Sato

2018 XXIIIrd International Seminar/Workshop on Direct and Inverse Problems of Electromagnetic and Acoustic Wave Theory (DIPED), Sep, 2018
Simultaneous Observations of Polar Mesosphere Winter Echoes and Cosmic Noise Absorptions in a Common Volume by the PANSY Radar (69.0°S, 39.6°E)

T. Nishiyama, K. Sato, T. Nakamura, M. Tsutsumi, T. Sato, Y.-M. Tanaka, K. Nishimura, Y. Tomikawa, M. Kohma

Journal of Geophysical Research: Space Physics, 123(6) 5019-5032, Jun, 2018
A User Parameter-Free Diagonal-Loading Scheme for Clutter Rejection on Radar Wind Profilers

Taishi Hashimoto, Koji Nishimura, Masaki Tsutsumi, Kaoru Sato, Toru Sato

JOURNAL OF ATMOSPHERIC AND OCEANIC TECHNOLOGY, 34(5) 1139-1153, May, 2017 Peer-reviewed
Facility implementation of adaptive clutter suppression to an existing wind profiler radar: First result

Masayuki K. Yamamoto, Seiji Kawamura, Koji Nishimura

IEICE Communications Express, 6(9) 513-518, 2017

Misc.

Imaging observation of Ionospheric Field Aligned Irregularities by the PANSY radar at Antarctic Syowa Station

香川大輔, 橋本大志, 齊藤昭則, 西村耕司, 堤雅基, 佐藤亨, 佐藤薫

日本地球惑星科学連合大会予稿集(Web), 2020, 2020
Imaging observation of Ionospheric Field Aligned Irregularities by the PANSY radar at Antarctic Syowa Station

香川大輔, 橋本大志, 齊藤昭則, 西村耕司, 堤雅基, 佐藤亨, 佐藤薫

地球電磁気・地球惑星圏学会総会及び講演会(Web), 148th, 2020
南極昭和基地PANSYレーダーによる電離圏沿磁力線不規則構造のイメージング観測

香川大輔, 橋本大志, 齊藤昭則, 西村耕司, 堤雅基, 佐藤亨, 佐藤薫

地球電磁気・地球惑星圏学会総会及び講演会(Web), 146th, 2019
南極昭和基地大型大気レーダー(39.6°E,69.0°S)による適応的信号処理を用いた電離圏非干渉性散乱と沿磁力線不均一の同時観測

橋本大志, 齊藤昭則, 西村耕司, 堤雅基, 佐藤薫, 佐藤亨

日本地球惑星科学連合大会予稿集(Web), 2019, 2019
EISCAT_3D(次世代欧州非干渉散乱レーダー)計画の進捗状況(7)

宮岡宏, 小川泰信, 西村耕司, 中村卓司, 野澤悟徳, 大山伸一郎, 藤井良一, HEINSELMAN Craig

地球電磁気・地球惑星圏学会総会及び講演会(Web), 144th, 2018
EISCAT_3D(次世代欧州非干渉散乱レーダー)計画の進捗状況(6)

宮岡宏, 小川泰信, 西村耕司, 中村卓司, 野澤悟徳, 大山伸一郎, 藤井良一, HEINSELMAN Craig

地球電磁気・地球惑星圏学会総会及び講演会(Web), 142nd, 2017
Development of MU radar real-time processing system with adaptive clutter rejection

Hiroyuki Hashiguchi, Takahiro Manjo, Mamoru Yamamoto, Koji Nishimura, Toru Sato, Taishi Hashimoto

JpGU, May, 2016
MUレーダー実時間アダプティブクラッター抑圧システムの開発

橋口浩之, 万城孝弘, 山本衛, 佐藤亨, 西村耕司, 橋本大志

日本気象学会2016年度春期大会, May, 2016
南極大型大気レーダーPANSY

佐藤亨, 佐藤薫, 堤雅基, 中村卓司, 西村耕司, 冨川喜弘, 橋本大志, 山岸久雄, 山内恭

B*plus 電子情報通信学会通信ソサイエティマガジン, 33(1) 44-49, Jun, 2015
C164 PANSYレーダーで観測された成層圏対流圏風速擾乱の周波数スペクトル解析(中高緯度大気,一般口頭発表)

南原優一, 佐藤薫, 堤雅基, 佐藤亨, 中村卓司, 冨川喜弘, 西村耕司, 高麗正史

大会講演予講集, 108 156-156, 2015
P114 赤道MUレーダーの観測角度範囲拡大のためのアンテナ配置に関する研究(ポスター・セッション)

橋口浩之, 寺田凛太郎, 西村耕司, 佐藤亨, 山本衛

大会講演予講集, 107 102-102, 2015
B152 南極大気精密観測に基づく地球気候変動機構に関する研究 : 第IX期南極地域観測事業重点研究観測計画(中層大気研究の最前線,専門分科会)

佐藤薫, 堤雅基, 佐藤亨, 中村卓司, 齊藤昭則, 冨川喜弘, 西村耕司, 高麗正史, 西山尚典, 江尻省 …

大会講演予講集, 107 145-145, 2015
D360 南極昭和基地大型大気レーダー(PANSY)による初期観測結果(中層大気,口頭発表)

佐藤薫, 堤雅基, 佐藤亨, 中村卓司, 齊藤昭則, 冨川喜弘, 西村耕司, 高麗正史, 山岸久雄, 山内恭

大会講演予講集, 104 580-580, 2013
南極昭和基地での中層・超高層大気観測の新展開

中村卓司, 佐藤薫, 堤雅基, 山内恭, 佐藤亨, 冨川喜弘, 西村耕司, 江尻省, 阿保真, 津田卓雄 …

極域科学シンポジウム講演予稿集(CD-ROM), 4th, 2013
C170 Current Status of Program of the Antarctic Syowa MST/IS Radar (PANSY)

101 100-100, 2012
C161 空間・周波数干渉計法とアレイアンテナ技術による対流圏イメージング(次世代WPRに向けて,ウィンドプロファイラの現状と将来,専門分科会)

西村耕司, 佐藤亨, 佐藤薫

大会講演予講集, 99 175-175, Apr 30, 2011
A162 南極昭和基地大型大気レーダー計画の現状Current Status of Program of the Antarctic Syowa MST/IS Radar(PANSY)(スペシャル・セッション「国際極年(IPY)2007-2008の成果と将来展望」II)

佐藤薫, 堤雅基, 佐藤亨, 中村卓司, 齊藤昭則, 冨川喜弘, 西村耕司, 山岸久雄, 麻生武彦, 江尻全機 …

大会講演予講集, 96 59-59, Oct 31, 2009
SuperDARN及びEISCATによる電離圏人工励起沿磁力線不規則構造の同時観測

行松彰, 西村耕司, 小川泰信, 堤雅基, 佐藤夏雄, RIETVELD Mike T, WRIGHT Darren, YEOMAN Tim K, ROBINSON Terry R, LESTER Mark

地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 126th ROMBUNNO.B005-P019, 2009
SuperDARN及びEISCATによる電離圏人工励起沿磁力線不規則構造の観測(3)

行松彰, 西村耕司, 小川泰信, 堤雅基, 佐藤夏雄, RIETVELD Mike T, DARREN Wright, YEOMAN Tim K, ROBINSON Terry R, LESTER Mark

地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 124th ROMBUNNO.B005-P035, 2008
昭和基地における極域超高層大気観測体制の現状

堤雅基, 山岸久雄, 宮岡宏, 門倉昭, 小川泰信, 行松彰, 岡田雅樹, 冨川喜弘, 佐藤薫, 佐藤亨 …

地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM), 124th ROMBUNNO.S001-02, 2008

Research Projects

Development of Radar Inversion Technologies for Small-Scale Weather Disturbances

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2020 - Mar, 2025
極域中間圏冬期エコーの生成解明を通して探る大気素過程の研究

科学研究費助成事業, 基盤研究(B), 日本学術振興会, Apr, 2017 - Mar, 2021

堤雅基, 西村耕司
High precision observation of ionosphere and neutral wind with new SuperDARN imaging technique

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2013 - Mar, 2019

Yukimatu Akira Sessai, Sato Natsuo, Nishitani Nozomu, Hosokawa Keisuke, Kawano Hideaki, Watanabe Masakazu, Ogawa Tadahiko
Development of cloud resolving dual-frequency radar

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2014 - Mar, 2018

Yamamoto Masayuki, YABUKI Masanori, OKAMOTO Hajime
Study on polar ionosphere and magnetosphere by SuperDARN radars with high temporal and spatial resolution observation

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 2006 - 2008

YUKIMATU Akira Sessai, TSUTSUMI Masaki, OGAWA Yasunobu, NISHIMURA Koji, SATO Natsuo, LESTER Mark, YEOMAN Yeoman, WRIGHT Darren M., ROBINSON Terry R.

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