[A-CG31] 航空機・無人機観測による地球惑星科学の推進

[ACG31-P04] 台風観測のための航空機搭載二重偏波フェーズドアレイレーダのシミュレーション

*高橋 暢宏¹ (1.名古屋大学　宇宙地球環境研究所)

キーワード：航空機搭載レーダ、フェーズドアレイレーダ

In this study, dual-polarization phased array radar observation is simulated by considering the electrical scan of the radar and flight path as well as the polarimetric observables aiming for the typhoon observation which has horizontal dimension of > 300 km and vertical extent of >10 km. Assuming that the aircraft flies about 13 km in height where are the cloud-free height except for the eye-wall region and aircraft flies circular path centered the eye of typhoon or straight path cross the eye region, the radar specifications are set as follows: scan angle is -90 degree to + 10 degrees, 1 degree intervals, scan direction is cross-track direction of the aircraft, and the observables are Zh, ZDR, φDP, ρHV and Doppler velocity. First of all, simple typhoon model is simulated by the radar, especially for Zh and Doppler velocity in order to check the geolocation of the aircraft and beam locations. The polarimetric simulation is based on the scattering characteristics of non-spherical particles of rain and ice by using T-matrix method. For the ice precipitation, several types of particles with different shape (oblate/prolate) and different refractive indices (various air and ice mixture).