利用阵列探测系统进行了聚焦激光束光斑漂移的实验研究。与图像法相比，在动态范围和采样率两方面得到了改善。近地面传播路径的实验结果表明：铅直方向的漂移量略大于水平方向的漂移量；在晴朗天气以及较大的湍流强度下，测量结果与理论结果定量吻合，其变化趋势与闪烁大致相同；而在其他条件下，二者变化特征可能明显不同；漂移谱密度在三个典型的频率范围内呈幂函数变化关系，幂指数分别约为-1.<参考文献原文>-2.4和-4.8。

The spot dancing of laser beam in a turbulent atmosphere was studied experimentally with a detector array system. The system has advantages over the imaging system, i.e., wide dynamic range and high sampling rate. The results of groud-based transmission experiments show that the spot dancing is a little larger in the vertical direction than in the horizontal direction. Under strong turbulence condition in clear weather the spot dancing coincides quantitatively with theoretical prediction, and its time variation is similar to that of the light scintillation, but they can be much different from each other under other conditions. Up to one thousand hertz the power spectrum of the spot dancing can be well fitted by power laws in three frequency ranges, and the exponents are about -1.2, -2.4, and -4.8 respectively.