为了自适应获得舰船尾流的有无信息以及距探测器的距离信息，基于海上采用激光探测目标船尾流所获得后向散射光信号的曲线特征，运用极小值筛选法对去噪平滑后的舰船尾流后向散射光信号进行了处理,准确获得了舰船尾流的有无信息以及距探测器的距离信息。同时，研究讨论了海上所测得的信号去噪后，与水体后向散射光信号按照最小均方误差准则进行拟合相减获得的纯尾流后向散射光信号，构造了纯尾流后向散射光信号的简单模型，并通过对其进一步的处理获得了尾流厚度相关信息。这一结果对尾流信息的判识是有帮助的。

In order to obtain accurate information of ship wake and the detection range auto-adaptively, based on the characteristics of the backscattering optical wake signal, the minimum screening method was used to process the backscattering signal. After anti-ground noise, based on the criterion of least mean-squared error, with the wake flow backscattering optical signal subtracting the water backscattering optical signal, the pure wake signal was obtained. A simple model of the pure wake signal was built, based on which the relevant information of the wake thickness was obtained. The results are helpful to judge and identify the wake character information.