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介绍一种基于高斯光束传输特性对Mie散射激光雷达回波信号校正的新方法.首先根据发射激光束的高斯光束特性,对大气激光雷达回波信号作高斯修正,然后在大气近似均匀假定下,对近场区经高斯修正的回波信号距离校正函数进行二次曲线拟合,实现对交叠面积影响的修正,实际计算表明,用此方法对Mie散射激光雷达回波近场信号进行处理,可获得与实际更为接近的反演结果.
A new method to correct the Mie scattering lidar echo signal based on the Gaussian beam transmission characteristics is introduced.At first Gaussian correction is applied to the atmospheric lidar echo signal according to the Gaussian beam characteristics of the emitted laser beam, The correction function of the distance correction function of the echo signal near the Gaussian field in the near field region is fitted with a quadratic curve so as to correct the influence of the overlap area. The actual calculation shows that the Mie scattering lidar echo near-field signal is processed by this method, Can be obtained more closely with the actual inversion results.