【摘要】 基于Cron与Sherman海洋环境噪声场理论模型,用数值模拟方法分别实现了各向同性噪声场和表面效应噪声场的建模,详细阐述了数值模拟方法的步骤和运算规律,通过对噪声源的分布密度和方式进行合理选择以及精确的时延滤波器设计,利用数值模拟方法可以产生空间任意接收点处的噪声场数据。仿真结果显示数值模拟方法产生的各向同性和各向异性噪声场的空间相关性特性与理论分析基本一致,表明该方法是正确有效的。更多还原

【Abstract】 Cron and Sherman[1] which mentioned the noise in the ocean is a superposition of an isotropic noise field and an anisotropic noise field originating at the surface. A numerical simulation method for the isotropic noise field and the anisotropic noise field was proposed. And operation steps and operational rules of the method were described in detail. By reasonable choosing the way noise sources distributed, and reasonable design of time-delay filter, the noise data received at any point in ocean could be generated by running the simulation method. The simulation results show that the spatial- correlation functions of isotropic noise and surface noise field simulated by the simulation method are consistent with the theoretical analysis. And it shows that the method is valid and efficient.更多还原