日本地球惑星科学連合2014年大会

講演情報

ポスター発表

セッション記号 M (領域外・複数領域) » M-IS ジョイント

[M-IS26_29PO1] 大気電気学

2014年4月29日(火) 18:15 〜 19:30 3階ポスター会場 (3F)

コンビーナ:*芳原 容英(電気通信大学 大学院情報理工学研究科)、牛尾 知雄(大阪大学大学院工学研究科情報通信工学部門)

18:15 〜 19:30

[MIS26-P03] MMSE法を適用した偏波機能を持つ二次元フェーズドアレイレーダの開発

*菊池 博史1Wu Ting1牛尾 知雄1商 進1金 寛1後藤 秀人2水谷 文彦2 (1.大阪大学、2.東芝)

キーワード:フェーズドアレイレーダ, MMSE法

We have been developing a polarimetric 2-D phased array weather radar which detects small scale phenomena such as tornadoes and downbursts. In this paper, we compare Beam Former method (BF), which is a conventional method in Digital Beam Forming signal processing of array antenna, with Minimum Mean Square Error method (MMSE), which is our proposed method, and discuss simulation results estimated by each method. In BF, antenna pattern is uniform and unique in the radar system, and its sidelobe level is high. As a result, if there are obstacles, for example high building, or very heavy rain area, the observation results of array antenna is imprecision in the region near them. In contrast, we can turn the null-point to interference wave direction at the same time we turn the mainlobe to the desired signal direction in MMSE.