Koyama Yasuhiro

Homepage URL (1)： https://nrid.nii.ac.jp/nrid/1000030359054/

Research field (1)： Solid earth science

Research keywords (14)：量子情報処理プロジェクト , 月探査機 , 月の2分性 , VLBI , スピン , 4-Wayドプラー , 内部構造 , 月 , 月裏側 , SELENE , 重力異常 , 相対VLBI , 月重力場 , ドプラー

Research theme for competitive and other funds (3)：

2009 - 2012 The developments of space-time information certification system using VLBI correlation processing
2003 - 2005 Estimation of gravity anomaly in the lunar far-side from VLBI and 4-Way Doppler data
1999 - 2002 An accurate measurements of lunar gravity fields by the differential VLBI technique

Papers (66)：

M. Sekido, K. Takefuji, H. Ujihara, T. Kondo, M. Tsutsumi, Y. Miyauchi, E. Kawai, S. Hasegawa, Y. Koyama, K. Watabe, et al. Frequency transfer with new broadband VLBI. NMIJ-NICT test experiment. 2019 URSI Asia-Pacific Radio Science Conference, AP-RASC 2019. 2019
Mamoru Sekido, Kazuhiro Takefuji, Hideki Ujihara, Tetsuro Kondo, Masanori Tsutsumi, Yuka Miyauchi, Eiji Kawai, Hiroshi Takiguchi, Shingo Hasegawa, Ryuichi Ichikawa, et al. Development of broadband VLBI system and report of experiments for geodesy and frequency comparison. Journal of the Geodetic Society of Japan. 2017. 63. 3. 157-169
Yasuhiro Koyama, Tsukasa Iwama, Hiroyuki Ito, Yuko Hanado, Mizuhiko Hosokawa. Experiences of leap second adjustment operations and questionnaires in Japan. 2015 1st URSI Atlantic Radio Science Conference, URSI AT-RASC 2015. 2015
M. Sekido, K. Takefuji, H. Ujihara, M. Tsutsumi, Y. Miyauchi, T. Kondo, T. Hobiger, S. Hasegawa, R. Ichikawa, Y. Koyama. Development of Wideband VLBI System with Transportable Small Telescope for Distant Frequency Transfer. 2014 XXXITH URSI GENERAL ASSEMBLY AND SCIENTIFIC SYMPOSIUM (URSI GASS). 2014
Hideyuki Toujima, Toshihiro Handa, Toshihiro Omodaka, Takumi Nagayama, Hideyuki Kobayashi, Yasuhiro Koyama. Propagation of highly efficient star formation in the North American Nebula (NGC 7000). Proceedings of the International Astronomical Union. 2012. 8. 292. 59

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MISC (72)：

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Patents (2)：

Professional career (1)：

Work history (8)：

2023/07 - 現在 National Institute of Information and Communications Technology General Planning Office, Quantum ICT Collaboration Center Director
2021/04 - 2023/06 National Institute of Information and Communications Technology General Planning Office, Network Research Institute, Director
2019 - NICT Wireless Networks Research Center Managing Director
2011/04 - 2016/03 NICT International Affairs Department International Relations Office Director
2008/07 - 2011/03 National Institute of Information and Communications Technology Space Time Standards Group, New Generation Netrowk Research Institute Group Leader

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Committee career (2)：

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