由船舶摇荡时历反推海浪方向谱

Deducing Directional Spectrum of Sea Wave from Ship Motion’s Time-history

针对现有获取海浪谱方面存在的不足,提出了一种根据现场较短时间的船舶横摇、纵摇和垂荡等时历数据,采取合适的谱分析技术,由船舶摇荡时历反推实际的海浪方向谱方法,以满足工程应用中对现场实际海浪谱的需求.

In light of the shortcomings in obtaining wave spectrum in the existing methods, this paper presents a new method to deduce a directional spectrum of sea wave from analyzing the time-history of a ship’s pitching, rolling and heaving on the basis of a proper spectrum analysis technique. It is believed undoubted that this method can meet the requirement of some projects at sea for sea wave spectrum.