基于方向谱的海浪合成方法  

Method of Ocean Wave Synthesis Based on Directional Spectrum

作　　者：侯学隆[1] 沈培志[1] 王文恽[2] 

机构地区：[1]海军航空工程学院指挥系,烟台264001 [2]海军航空工程学院科研部,烟台264001

出　　处：《系统仿真学报》2010年第1期130-134,共5页Journal of System Simulation

基　　金：国防预研项目(513040301)

摘　　要：研究海浪对反舰导弹的控制系统与飞行弹道的影响,需要对海浪进行逼真模拟。在分析随机三角函数叠加产生海浪及反演海浪频谱模拟海浪不足的基础上,提出基于方向谱的海浪合成方法:采用Gerstner波形描述海面,通过对方向谱进行四叉树采样,提取组成波振幅、频率、传播方向等参数合成海浪。该方法能够模拟远离海岸的任意大小、任意精度的连续海洋表面,效果逼真,可用于海浪的数值仿真与视景仿真中,能够为反舰导弹控制系统仿真及三维弹道仿真提供连续海洋波面数据。In order to research ocean wave＇s effects on control system and fly trajectory of anti-ship missile, simulating realistic ocean wave is necessary. After analyzing the methods of random trigonometric function and ocean wave frequency spectrum in simulating ocean wave, the method of ocean waves synthesis based on directional spectrum is discussed. It describes ocean wave surface in Gerstner wave shape, samples directional spectrum in quad-tree, and synthesizing ocean wave after getting amplitude, frequency and direction of component wave. The method allows a continuous realistic representation of ocean surface with any size and any level of detail. It can be used in numeric simulation and scene simulation of ocean wave and provide continuous ocean wave surface data for anti-ship missile control system simulation and three-dimension trajectory simulation.

关 键 词：海浪合成 Gerstner波形 方向谱 四叉树 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]