实测海浪水压场特性分析

海浪水压场是舰船水压场的主要背景干扰.为深入研究海浪水压场与舰船水压场的特征区别,在大量实测海浪水压场数据的基础上,对其时域及频域特性进行研究,并对海浪水压场的平稳性进行了检验,结果表明,海浪水压场能量主要集中在低频范围,且随着海况和水深的增加,最大能谱频率向低频方向移动,在较短的时间内,可将海浪水压场视为平稳随机过程.

Characters of ocean wave hydrodynamic pressure field signal

The ocean wave hydrodynamic pressure field signal is the main background of the ship hy-drodynamic pressure field signal. In order to distinguish these two signals, the characters of the ocean wave hydrodynamic were studied. The result shows that the main power of the ocean wave hydrodynamic pressure field signal focuses at the lower frequency; the corresponding frequency of maximal spectrum decreases along with the increase of ocean grade and depth; the ocean wave hydrodynamic pressure field signal can be regarded as the stationary signal in several minutes.