Acta Optica Sinica, Volume. 29, Issue 9, 1(2009)
A New Method of Aerosol Particles' Time-of-Flight Accurate Measurement Based on Differentiation
Time-of-flight aerosol beams spectrometry is a typical method of accurate size and concentration measurement in aerosol particles' size distribution monitoring. Accurate measurement of aerosol particles' time-of-flight is the key to monitor the distribution of particles' size. A method of accurate measurement of aerosol particles' time-of-flight is designed by improving the threshold level comparison method, and the comparison of zero-level instead of the changing threshold level is realized based on differentiation since the maximum value of the original singal is corresponding to zero-level of the differential singal. By using this method, the time-of-flight can be accurately measured when the strength of the scattered light changes, or when the two peaks of the scattered light are not symmetrical.
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Huang Shuhua, Liu Jianguo, Liu Wenqing, Lu Yihuai, Zhang Yujun, Gui Huaqiao, Sun Shijie, Jiang Yu, Chen Jun, Wang Yaping. A New Method of Aerosol Particles' Time-of-Flight Accurate Measurement Based on Differentiation[J]. Acta Optica Sinica, 2009, 29(9): 1
Category: Atmospheric Optics and Oceanic Optics
Received: Dec. 16, 2008
Accepted: --
Published Online: Jun. 19, 2020
The Author Email: Shuhua Huang (hsh@aiofm.ac.cn)