1 0 0 0 OA 大気中微量ガス濃度測定のための高速波数掃引方式TDLASシステムの開発
- 著者
- 平岡 孝之 香川 直己 王 明 和田 修己 古賀 隆治
- 出版者
- The Institute of Electrical Engineers of Japan
- 雑誌
- 電気学会論文誌C(電子・情報・システム部門誌) (ISSN:03854221)
- 巻号頁・発行日
- vol.117, no.11, pp.1670-1676, 1997-10-20 (Released:2008-12-19)
- 参考文献数
- 8
A tunable diode laser absorption spectrometry (TDLAS) system has been developed in order to apply it to an open atmospheric path which is often suffered from heavy scintillation. A quick scanning of the laser frequency and the digital signal processing architecture are employed to cope with it. The laser frequency is scanned over 4 ms around an absorption line of CH4 in 7μm band every 31ms.Received signal is treated with a DSP system to achieve the best SNR and also to separate the absorption signal from scintillation. Column density of CH4 is produced on every laser frequency scanning. The adjoint spectrum algorithm is employed to achieve the separating capability.
1 0 0 0 OA ライダーシステムによる福山大学上空の黄砂観測 : 2007
- 著者
- 香川 直己
- 出版者
- 福山大学
- 雑誌
- 福山大学工学部紀要 (ISSN:0286858X)
- 巻号頁・発行日
- vol.31, pp.9-19, 2007-12
Observation of KOSA, Asian Dust, has been carried out every spring since 2001 with a constructed polarized Mie LIDAR system in department of electronic and electrical engineering, Fukuyama university at 133.23/34.47N. In this report, significant data of KOSA events obtained in 2007 are shown. Moreover, consideration of relation between KOSA and photochemical oxidant are described.
1 0 0 0 OA ライダーシステムによる福山大学上空の黄砂観測 : 2004-2005
- 著者
- 香川 直己
- 出版者
- 福山大学
- 雑誌
- 福山大学工学部紀要 (ISSN:0286858X)
- 巻号頁・発行日
- vol.30, pp.13-18, 2006-12
Observation of KOSA, Asian Dust, has been carried out every spring since 2001 with a constructed polarized Mie LIDAR system in department of electronic and electrical engineering, Fukuyama university at 133.23/34.47N. In this report, significant data of KOSA events obtained in 2004 and 2005 are shown.
1 0 0 0 OA 偏光ミーライダーシステムによる対流圏エアロゾルの観測結果及び絶対量評価
Observation of aerosols in 2002 at Fukuyama University with a polarized Mie LIDAR system is described. Location of the LIDAR system is 133.23/34.47N. In this report, we show a result from April 08 to 13 of 2002, under significant KOSA event, and another result from September 02 to 06, which was first data obtained automatically. The extinction coefficient was also predicted by using the volume particle size distribution and optical depth monitored by sky radiometer.