论文部分内容阅读
提出了一种Mie散射激光雷达在考虑多次散射影响时求解卷云激光雷达比的新方法。首先,根据多次散射激光雷达方程,构建关于气溶胶消光系数边界值和卷云有效激光雷达比的非线性方程组;其次,采用非线性粒子群算法求解方程组,同时得到气溶胶消光系数边界值和卷云的有效激光雷达比;然后,使用Platt的多次散射因子方程,结合邱金桓参数化的多次散射对一次散射比,计算多次散射因子,进而求得卷云的激光雷达比。使用Mie散射激光雷达真实回波信号进行了实验验证,结果表明,方法收敛速度快,精度较高,具有很好的应用价值。
A new method to solve the volume ratio of Lasers in the Mie scattering lidar is proposed when considering the influence of multiple scattering. First of all, based on the multiple scattering lidar equation, the nonlinear equations about the aerosol extinction coefficient boundary and the cirrus cloud effective lidar ratio are constructed. Secondly, the nonlinear particle swarm optimization algorithm is used to solve the equations and the aerosol extinction coefficient boundary And the effective Lidar ratio of Cirrus. Then, using Platt’s multiple scattering factor equation, combined with Qiu Jinhuan’s parametric multiple scattering vs. first-order scattering ratio, the multiple scattering factor was calculated, and then the Lidar ratio of cirrus clouds was obtained. The experimental results show that the proposed method has the advantages of fast convergence and high accuracy, and has good application value.