基于能量等分法，对ITTC和Jonswap谱进行等分，产生造不规则波的频率-split spectrum within frquency based on equal-energy method

本程序代码是用来模拟一维的海面，生成海面高度，采取的是jonswap谱(This program code is used to simulate the one-dimensional sea surface, to generate sea level height, and take the jonswap spectrum.)

通过频谱来模拟波浪，程序为Jonswap谱的波浪模拟，可随意调整谱参数、时间间隔和模拟的时间长度(The wave is simulated by the spectrum, and the program is a wave simulation of the Jonswap spectrum. The spectral parameters, time interval and length of the simulation can be adjusted at will.)

用来实现合田改进的随即波浪Jonswap谱(Improved_Jonswap_spectral)