Research field (2)：
Measurement engineering
, Space and planetary science
Research keywords (4)：
レーダー信号処理
, 無線信号処理
, 計測工学
, 地球惑星電離圏
Research theme for competitive and other funds (5)：
2020 - 2025 Development of Radar Inversion Technologies for Small-Scale Weather Disturbances
2017 - 2021 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
2013 - 2019 High precision observation of ionosphere and neutral wind with new SuperDARN imaging technique
2014 - 2018 Development of cloud resolving dual-frequency radar
2006 - 2008 Study on polar ionosphere and magnetosphere by SuperDARN radars with high temporal and spatial resolution observation
Papers (39)：
H. Idei, M. Fukuyama, S. Sakai, K. Mishra, K. Nishimura, R. Ikezoe, T. Onchi, T. Ido, K. Hanada. Adaptive Capon beamforming for lensless electron cyclotron emission imaging with high spatial resolution. Review of Scientific Instruments. 2022. 93. 10. 103531-103531
Akira Kadokura, Masaki Kanao, Hironori Yabuki, Yoshimasa Tanaka, Koji Nishimura. Activities of the Polar Environment Data Science Center of ROIS-DS, Japan. Data Science Journal. 2022. 21
Masayuki K. Yamamoto, Seiji Kawamura, Katsuyuki Imai, Hiroshi Yamaguchi, Koji Saito, Koji Nishimura. Aerial Clutter Suppression in a Wind Profiler Radar With Antenna Subarrays. IEEE Transactions on Geoscience and Remote Sensing. 2022. 60. 1-14
Kiyoka Murase, Ryuho Kataoka, Takanori Nishiyama, Koji Nishimura, Taishi Hashimoto, Yoshimasa Tanaka, Akira Kadokura, Yoshihiro Tomikawa, Masaki Tsutsumi, Yasunobu Ogawa, et al. Mesospheric ionization during substorm growth phase. Journal of Space Weather and Space Climate. 2022. 12. 18-18
M. Kohma, K. Sato, K. Nishimura, M. Tsutsumi. Weakening of Polar Mesosphere Winter Echo and Turbulent Energy Dissipation Rates After a Stratospheric Sudden Warming in the Southern Hemisphere in 2019. Geophysical Research Letters. 2021. 48. 10
