基于雷达测波和mNLS方程的非线性海浪演化研究

Nonlinear Evolution of Waves Based on Radar Wave Measurement and mNLS Equation

雷达测波是目前唯一可以船载且具有较高精度的海浪信息测量方式,能够实时反映出舰艇当前航行海区的实际情况;基于mNLS方程则能够较好地描述海浪的非线性演化规律;立足于将雷达测波系统与mNLS方程进行融合的研究思路,利用小波陡ε≤0.3和窄谱条件Δf/f 0≤0.2对实测的雷达测波谱进行筛选,进而构造初始条件对海浪的非线性演化进行数值模拟。

Radar wave measurement is the only way to obtain high-accuracy wave information that can be carried out on ship reflecting the real-time and actual wave conditions of the ship's current navigation area.The nonlinear evolution of waves can be well described by the model based on the mNLS equation.The radar wave measurement system is used together with mNLS equation.The radar wave measurement spectrum is selected with the application conditions ofε≤0.3 andΔf/f 0≤0.2 to construct the initial conditions for simulating the nonlinear evolution of waves.