Noise effect on ozone DIAL night time measurement in the troposphere

被引：1

作者：

Cao, Nian-Wen ^{[1
]}

Yang, Feng-Kai ^{[1
]}

Shi, Jian-Zhong ^{[1
]}

Fukuchi, Tetsuo ^{[2
]}

机构：

[1] School of Atmospheric Physics, Nanjing University of Information Science and Technology, Nanjing 210044, China

[2] Electrical Physics Department, Komae Research Laboratory, Central Research Institute of the Electric Power Industry, Tokyo, Japan

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2012年 / 41卷 / 12期

关键词：

Optical radar - Uncertainty analysis;

D O I：

10.3788/gzxb20124112.1416

中图分类号：

学科分类号：

摘要：

The uncertainty of ozone differential absorption lidar (DIAL) measurements due to the effect of background noise is presented. The effect of background noise on ozone concentration profiles is proportional to the background intensity and the ratio of return signal intensities at on and off wavelength. Analysis suggests that an appropriate return signal intensity ratio can make the effect of background signal very small, negligible. The simulations based on the analysis coincide with the experimental results. The experimental results show that the impact of background signal is negligible at an appropriate return signal intensity ratio of 0.96 at wavelength pair (280 nm, 285 nm). In case of unknown background intensity, we can adjust the laser pulse energy levels at the two wavelengths to obtain an appropriate return signal intensity ratio on the oscilloscope to suppress the impact of background signal and ensure the accuracy of night time ozone measurements.

引用

页码：1416 / 1421