Wang Yufeng, Jia Lisong, Li Xingxing, Lu Yumei, Di Huige, Hua Dengxin
Opt Express. 2021 Jan 18;29(2):837-853. doi: 10.1364/OE.409309.
Different from the existing methods for estimating averaged slant visibility by lidar and the traditional Koschmieder visibility formula, a measurement method for slant visibility is fundamentally proposed in this paper that considers the correction of slant path scattered radiance. Lidar is adopted to provide aerosol parameters, including optical depth and scattering parameters, and the SBDART (Santa Barbara DISORT Atmospheric Radiative Transfer) model is used to solve the radiative transfer equation to obtain the corresponding radiance distribution; thus, the corrected apparent brightness contrast between the object and background along the slant path is used to achieve accurate slant visibility. Based on the measurement principle of slant visibility, a theoretical simulation and an analysis of the slant path scattered radiance are performed, and the resulting slant visibility is studied in detail in this paper.
与现有的利用激光雷达估算平均倾斜能见度的方法以及传统的科斯米德能见度公式不同，本文从根本上提出了一种考虑倾斜路径散射辐射校正的倾斜能见度测量方法。采用激光雷达提供气溶胶参数，包括光学深度和散射参数，并利用SBDART（圣巴巴拉离散纵标大气辐射传输）模型求解辐射传输方程以获得相应的辐射分布；因此，利用沿倾斜路径物体与背景之间校正后的表观亮度对比度来实现精确的倾斜能见度。基于倾斜能见度的测量原理，进行了倾斜路径散射辐射的理论模拟与分析，并在本文中对所得倾斜能见度进行了详细研究。
