Establishment of humidity estimation method from the phase information of radar echo from the fixed target

2014 Fiscal Year Final Research Report

• Project/Area Number: 24654153
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: Kyoto University
• Principal Investigator: TSUDA Toshitaka 京都大学, 生存圏研究所, 教授 (30115886)
• Co-Investigator(Kenkyū-buntansha): FURUMOTO Jun-ichi (10402934)
• Co-Investigator(Renkei-kenkyūsha): SEKO Hiromu (60354445)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: ウィンドプロファイラ / 水蒸気観測 / 屈折率変動

Outline of Final Research Achievements

This study is devoted to development of humidity estimation method by using the carrier phase of L-band radar. The transmitted radio wave is detected by an independent receiver located away from the radar. The side-lobe transmission, which is regarded as the useless transmission, is positively used as the passive radar system. This new system is expected to estimate horizontal structure of humidity fluctuations.
In this study, the theoretical background of this new system was deeply discussed especially focusing on the error of oscillator and timing controller. The prototype system was assembled for the test experiment at the Shigaraki MU observatory.

Free Research Field

電磁波を活用した大気計測法開発、および大気変動現象