根据比较精确的数学模型，考虑到海情、地球曲率、海水反射特性及极化方式等各种因素影响，对应不同雷达截面积的目标，我们可计算出低仰角时接收机输出信噪比与距离的关系曲线。根据雷达的积累信噪比，可用该曲线比较精确地估算出跟踪雷达对超低空目标的最大捕获距离。 According to the more accurate mathematical model, taking into account the sea conditions, the curvature of the earth, the reflection characteristics of seawater and polarization and other factors, corresponding to different radar cross-sectional area of ​​the target, we can calculate the receiver elevation signal-to-noise ratio Distance curve. According to the accumulated signal-to-noise ratio of the radar, this curve can be used to accurately estimate the maximum capture distance of the tracking radar to the ultralight target.