気象用フェーズドアレイレーダの精度検証

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2014/04/01

タイトル(英語): The Evaluation on the Observation Accuracy of Phased Array Weather Radar

著者名: 平野　裕基（大阪大学大学院工学研究科），円尾　晃一（大阪大学大学院工学研究科），嶋村　重治（大阪大学大学院工学研究科），吉田　智（国土交通省気象庁 気象研究所），牛尾　知雄（大阪大学大学院工学研究科），水谷　文彦（（株）東芝），佐藤　晋介（（独）情報通信研究機構）

著者名(英語): Yuki Hirano (Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University), Kouichi Maruo (Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University), Shigeharu Shimamura (Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University), Satoru Yoshida (Japan Meteorological Agency), Tomoo Ushio (Division of Electrical, Electronic and Information Engineering, Graduate School of Engineering, Osaka University), Fumihiko Mizutani (Toshiba Corporation), Shinsuke Satoh (National Institute of Information and Communications Technology)

キーワード: フェーズドアレイレーダ，気象レーダ，ディスドロメータ，降水　　phased array radar，weather radar，disdrometer，precipitation

要約(英語): Meteorological disasters are caused by the severe weather phenomena like tornadoes or heavy rains. Weather radar is helpful to observe those phenomena. The conventional radar, which has about 500m spatial resolution and about 5 minutes temporal resolution, is not able to catch the detailed cloud growths and movements spatially or temporally. The PAR developed by our research group, which has 100m spatial resolution, can scan over the whole sky within the range of 30km every 10 seconds or within the range of 60km every 30 seconds by applying Digital Beam Forming (DBF). This paper discusses about the evaluation on the observation accuracy of PAR by comparing with other radars and a disdrometer. At first, PAR's reflectivities are compared with reflectivities derived from a disdrometer for the calibration. PAR reflectivities are highly correlated with disdromter reflectivities. Next, PAR reflectivities are compared with those of other radars. In this comparison, PAR reflectivities are also highly correlated with those of other radars. Therefore, it appears that PAR can observe precipitation accurately in high temporal resolution.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.134 No.4 （2014） 特集：平成25年基礎・材料・共通部門大会

本誌掲載ページ: 204-210 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/134/4/134_204/_article/-char/ja/