摘要
提出了一种基于后向散射式激光雷达方程的海水衰减系数现场快速测量方法。该方法通过接收角度的调整,得到不同距离、不同散射角度下的水体散射光信号,并根据由后向散射式激光雷达方程推导出的衰减系数公式计算测量水域的衰减系数。实验结果表明,采用多角度后向散射测量的方法得到的水体衰减系数的测量误差可控制在8%以内,且由实验结果的误差分析可知,随着系统与计算方法的改进,系统的测量误差可得到进一步减小。
A new measurement of attenuation coefficient is studied in this paper which was based on the backscattering lidar equation.This measurement obtain different backscattering signals from different distance and scattering angle of sea water by adjusting the receiver angle.Using these data and the formula of attenuation coefficient educing from the back-scattering lidar equation the attenuation coefficient of seawater could be calculated.It turns out that the error of the experiment result using this method is less than 8% and it will be reduced more if the experiment system and the formula could be improved.
出处
《激光与红外》
CAS
CSCD
北大核心
2008年第5期417-420,共4页
Laser & Infrared
关键词
海水衰减系数
后向散射
现场测量
接收视场
attenuation coefficient
back-scattering
local measurement
field of view of receiver
