介绍了一套自行研制的双视场激光雷达系统的原理、结构、关键技术及其性能。该激光雷达系统采用两个独立的接收视场，一个采用离轴收发光学系统探测高空大气，另一个采用同轴收发光学系统探测低空尤其是大气边界层大气。激光雷达系统的数据采集单元对高空大气同时进行模拟数字信号探测和光子计数信号探测，有效地改善了激光雷达系统因回波信号的动态范围过大而无法兼顾高低空同时探测的缺点。对本系统接收的大气回波信号进行拼接和反演，结果表明，该系统能够有效获取大气气溶胶光学特性。通过与本地区另一台激光雷达信号进行对比验证了该系统探测信号的可靠性。

A dual field of view lidar for observing atmospheric aerosols is described. The lidar has two independent receiving fields. One observes higher atmosphere by noncoaxial system, and the other observes lower atmosphere (especially planetary boundary layer) by coaxial system. The higher atmospheric data are obtained by combining analog and photon counting. It effectively improves observing ability limited by large dynamic range of the receiving signals. The observing data are shown and analyzed. The results show that this lidar is an effective tool for observing atmospheric aerosols. The reliability has been validated by comparing with another lidar system.