摘要
舰船在风浪中摇荡时历的极短期预报 ,具有多方面的实用价值 .现有的各种预报方法中 ,以卷积法和时间序列法中的ARMA模型较为常用 ,但如何测量艏前波是上述方法实施的前提条件 ,则未能解决 .文中提出的在舰船舯部装塔克测波仪 ,将所测波形时历转换为艏前任意点波形时历的方法 ,可解决上述矛盾 .再采用ARMA建模、依AIC法则估计模型阶数的预报方式 。
The shortest prediction of the time ergodicity for ships′ sway in the waves is of extensive practical value. The ARMA model of convolution method and time sequence method is commonly used in the existing prediction methods, but its premise-the practical mode of measuring the bow waves hasn't been resolved yet. The problem mentioned above can be resolved by the method presented in this paper. We can use the TA wave gage mounted in the midship to measure the actual wave shape and transform it into wave shape of any coordinate of bow. By this method which uses the ARMA model and estimates the model's order number according to AIC theorem, the shortest prediction of the time ergodicity of the sway of the actual ships can be resolved.
出处
《海军工程大学学报》
CAS
2001年第4期49-52,共4页
Journal of Naval University of Engineering
