局部气垫双体船波浪谱反演方法研究

为了使局部气垫双体船在航行过程中能时刻感知海况来调节气垫气流量，分析对比了从海浪波高信号反推出海浪谱的4种方法，从而为选取出气垫控制系统内反演波浪谱提供最优控制算法。通过已知海浪谱的波浪，将反演出的海浪谱与已知谱对比，寻找出最优算法。最终表明Welch法的结果较理想，可达到工程应用精度。

Research on method of wave spectrum inversion of PASCAT

In order to make PASCAT regulate air flow with perception of sea state now and then, this paper analyzes and compares four methods, which deduce the wave spectrum signals from the amplitude of sea wave, in order to provide optimal control algorithm for selecting the inversion wave spectrum in the control system. The optimal algorithm is obtained by comparing the deduced wave spectrum with known spectrum. It shows that the results from Welch method are satisfying and can meet the engineering precision.