中文摘要：

根据大气后向散射原理，设计了一台激光雷达能见度仪。在详细介绍系统结构的基础上，阐述了回波信号的数据校准方法，通过采用一种新的基于Fetmald方法的迭代算法反演消光系数，获得了较高的能见度测量精度。与美国Belford能见度仪的外场对比实验表明，该激光雷达能见度仪相对测量误差在20％以内。

英文摘要：

As a kind of active remote sensing tools,lidar plays an important role in atmospheric parameters measurement. According to the principle of atmospheric backscatter, the lidar for visibility measurement, namely lidar-visibility meter is designed. Firstly,the system structure is introduced in detail ,and then the calibration method of return signals is illustrated. By using a new iteration algorithm which based on Frmald method to invert extinction coefficient, high precision of visibility measurement is achieved. The outfield intercomparison experiments with Belford show that the relative measurement error of lidar-visibility meter is within 20%.