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介绍了一台直接探测的用于大气气溶胶测量的离轴激光雷达系统,分别从理论计算和实验测量两方面给出了该激光雷达系统中几何重叠因子的求解方法。结果显示,实验法所得几何重叠因子随距离的分布曲线和理论计算所得结果基本吻合,且实验法所得系统几何重叠因子随距离的分布曲线随日期基本不变,说明所介绍的用于求解系统几何重叠因子的实验方法是可行的。
An off-axis Lidar system for direct measurement of atmospheric aerosol is introduced. The method to solve the geometrical overlap factor in the Lidar system is given respectively from theoretical calculation and experimental measurement. The results show that the geometrical overlap factor obtained by the experimental method is in good agreement with the calculated distance distribution curve and the theoretically calculated result, and the distribution curve of the system geometric overlap factor with the distance obtained by the experimental method remains basically unchanged with the date, indicating that the proposed method for solving the system geometry The experimental method of overlap factor is feasible.