Study on simulation model of ocean wave based on JONSWAP spectrum and small amplitude wave theory model
To study the effect of wave variation on laser incident angle in bathymetric detection by lidar,the wave variation is influenced by sea surface wind,in this paper,a three-dimensional ocean wave model is constructed based on the correlation formula of the JONSWAP ocean wave spectrum and direction function,considering the regular propagation state of the direction and periodicity of the shallow sea wave propagation,the theoretical model of the small amplitude wave is introduced,and the height model of the ocean wave superposed by the two models under different wind speeds and the coordinates of the underwater laser foot point are established.The simulation results show that the proposed model can reasonably capture the variation of ocean waves.