介绍了一种利用成像激光光斑测量大气湍流廓线的激光雷达原理。通过对分层大气湍流的光束波面变化的测量,获取各分层大气湍流的相干长度,据此利用平面波近似算法反演湍流强度廓线。通过搭建的大气湍流廓线激光雷达实验系统获得了湍流廓线的实验数据,并且与系留飞艇搭载的温度脉动仪在同时段固定高度进行了对比实验,验证了近似递推算法的可行性。最后对实验中出现的误差进行了讨论。

The principle of a lidar system for measuring atmospheric turbulence vertical profiles has been introduced. The profile retrieval technique is based on the measurement of coherent lengths of different atmospheric layers,and uses plane wave approximation algorithm in profile inversion. The data of atmospheric turbulence vertical profiles were got by the experiment lidar system,and compared with the data from micro-thermal meter at the same altitude. This comparative experiment has validated the feasibility of the approximation iterative algorithms of the integrat. Experiment errors was discussed at last.