Bissonnette L R, Hutt D L
Appl Opt. 1995 Oct 20;34(30):6959-75. doi: 10.1364/AO.34.006959.
A novel aerosol lidar inversion method based on the use of multiple-scattering contributions measured by a multiple-field-of-view receiver is proposed. The method requires assumptions that restrict applications to aerosol particles large enough to give rise to measurable multiple scattering and depends on parameters that must be specified empirically but that have an uncertainty range of much less than the boundary value and the backscatter-to-extinction ratio of the conventional single-scattering inversion methods. The proposed method is applied to cloud measurements. The solutions obtained are the profiles of the scattering coefficient and the effective diameter of the cloud droplets. With mild assumptions on the form of the function, the full-size distribution is estimated at each range position from which the extinction coefficient at any visible and infrared wavelength and the liquid water content can be determined. Typical results on slant-path-integrated optical depth, vertical extinction profiles, and fluctuation statistics are compared with in situ data obtained in two field experiments. The inversion works well in all cases reported here, i.e., for water clouds at optical depths between ~0.1 and ~4.
提出了一种基于多视场接收器测量的多次散射贡献的新型气溶胶激光雷达反演方法。该方法需要一些假设，这些假设将应用限制于足够大的气溶胶颗粒，以产生可测量的多次散射，并且依赖于必须凭经验指定的参数，但这些参数的不确定范围远小于传统单散射反演方法的边界值和后向散射与消光比。所提出的方法应用于云测量。获得的解是散射系数和云滴有效直径的剖面。在对函数形式进行适度假设的情况下，从每个距离位置估计全尺寸分布，由此可以确定任何可见光和红外波长下的消光系数以及液态水含量。将斜程积分光学深度、垂直消光剖面和波动统计的典型结果与在两次野外实验中获得的原位数据进行了比较。在此报告的所有情况下，即对于光学深度在0.1至4之间的水云，反演效果都很好。
