Study on signal processing for Heterodyne Doppler Wind Lidar

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K06129
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Measurement engineering
• Research Institution: National Institute of Information and Communications Technology
• Principal Investigator: Ishii Shoken 国立研究開発法人情報通信研究機構, 電磁波研究所リモートセンシング研究室, 主任研究員 (70359107)
• Co-Investigator(Kenkyū-buntansha): バロン フィリップ 国立研究開発法人情報通信研究機構, 電磁波研究所リモートセンシング研究室, 主任研究員 (00747561) ; 村田 健史 国立研究開発法人情報通信研究機構, 総合テストベッド研究開発推進センター, 研究統括 (20274342)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 光計測 / ライダー / 風計測 / ドップラー / 光ヘテロダイン検波 / 信号処理

Outline of Final Research Achievements

In order to optimize measurement performance of a future space-based Doppler Wind Lidar with the heterodyne detection system, a pseudo-truth atmospheric field with inhomogeneous atmosphere and aerosol data set calculated using a global aerosol model were installed in a full-fledged space-based Doppler Wind Lidar simulator. Retrieval algorithms for assuming wind data were highly advanced using the pseudo-truth atmospheric field and the aerosol model.
The measurement performances of the future space-based Doppler Wind Lidar with the full-fledged coherent Doppler Wind Lidar simulator have been studied on the relation between the signal to noise ratio and wind measurement error, and statistically-expected wind measurement errors. Feasibility study has been made on attitude control accuracy required for the satellite optical sensor system on the basis of zero-Doppler wind speed of the pseudo-ground surface simulated by the full-fledged coherent Doppler Wind Lidar simulator.

Free Research Field

光計測工学