一、问题的提出自Tayfun等将Priestley提出的非平稳随机过程的谱理论及其用滤波技术进行谱估计的方法应用到非平稳波场中来之后,非平稳海浪过程的谱估计技术已基本得到解决。文献[2]在Priestley和Tayfun等研究的基础上,提出了以成长风浪谱为依时谱的理论,较严格地阐明了谱宽度参量B_f(t,ω)和B_o(t,ω)的变化规律,使非平稳海浪过程谱估计在理论上更加完善;在应用上提出了对成长风浪谱进行优选的判 I. PROBLEM PROBLEMS Spectral estimation techniques for nonstationary wave processes have been basically obtained since Tayfun et al. Applied Priestley’s spectral theory of nonstationary stochastic processes and their spectral estimation using filtering techniques to nonstationary wave fields solve. Based on the studies of Priestley and Tayfun et al. [2], this paper proposes a theory of growing wind and wave spectrum as a time-dependent spectrum and more strictly expounds the changes of spectral width parameters B_f (t, ω) and B_o (t, ω) Law, so that the non-stationary wave process spectrum estimation in theory more perfect; in the application of the proposed growth wave spectrum of the preferred sentence