Kovalev Vladimir A
Fire Sciences Laboratory, US Department of Agriculture, PO Box 8089, Missoula, Montana 59807, USA.
Appl Opt. 2003 Dec 20;42(36):7215-24. doi: 10.1364/ao.42.007215.
A variant of the near-end solution is presented that allows one to consider a multiple-scattering component in lidar measurements of distant clouds or dense smoke. It is assumed that the lidar signal, contaminated by multiple scattering, obeys a single-scattering lidar equation in which an additional term, which is related to the range-dependent ratio of a multiple-to-single-scattering component, is included. For the inversion, a brink solution is proposed that does not require an a priori selection of the extinction-to-backscatter ratio in the optically dense aerosol formation under investigation. The solution requires either knowledge of the multiple-to-single-scattering ratio (e.g., determined experimentally with a multiangle lidar) or the use of the analytical dependence of the multiple-to-single-scattering ratio on the aerosol optical depth. In the latter case, an iterative technique is used.
提出了一种近端解决方案的变体，该变体允许人们在对远处云层或浓烟进行激光雷达测量时考虑多重散射分量。假设受多重散射污染的激光雷达信号服从单散射激光雷达方程，其中包含一个与多重散射分量与单散射分量的距离相关比率有关的附加项。对于反演，提出了一种边缘解决方案，该方案在研究光学致密气溶胶形成时不需要事先选择消光与后向散射比率。该解决方案需要知道多重散射与单散射比率（例如，用多角度激光雷达通过实验确定），或者使用多重散射与单散射比率对气溶胶光学厚度的解析依赖关系。在后一种情况下，使用迭代技术。
