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介绍尾流湖上实验，从水平和竖直两个方向探测尾流．用Ａ式和Ｂ式两种显示方式绘出了尾流的轨迹图，测量了尾流的几何尺度．然后利用瞬时频率序列分析方法，对尾流回波（混响）进行了分析．最后，利用比较法测量了尾流的声散射强度．
Introduce the Wake Lake experiment, detecting wake from both horizontal and vertical directions. A and B-type display of two ways to draw the wakes of the trajectory, measuring the wake of the geometric scale. Then the instantaneous frequency sequence analysis method is used to analyze wake echo (reverberation). Finally, the acoustic scattering intensity of wake is measured by comparison method.