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 - 1.2 ,- 2 .4和 - 4 .8 An experimental study on spot laser beam spot drift using array detection system was carried out. Compared with the image method, the dynamic range and the sampling rate has been improved both. The experimental results of near-surface propagation paths show that the drift in the vertical direction is slightly larger than that in the horizontal direction. The measurement results agree well with the theoretical results in sunny weather and large turbulence intensity, and the trend is almost the same as that of the flicker. Under other conditions, the variation characteristics may be significantly different. The drift spectral density has a power function variation in three typical frequency ranges, and the power indices are about -1.2, -2.4 and -4.8 respectively