摘要
海面噪声是整个海洋噪声研究领域的重要组成部分,准确预测海面噪声对于船舶探测系统及水声系统性能至关重要。本文对影响海面噪声的信号源特性进行分析,通过统计学方法对噪声源的分布情况及噪声传播条件进行研究,分析传播中的射线原理对噪声的影响。最后利用神经网络算法对简正波模型进行改进,研究小角度范围内噪声场的密度函数,并发散至大广角范围,得到海面噪声以及噪声信道的统计特性函数,并进行了实验。
Sea surface noise is an important part of the whole ocean noise field,it's also important to the performance of ship detection system and underwater acoustic system. The paper study the propagation of noise through the statistical method,also study the normal-mode formula of the directional density function suitable model. At last, the normal-mode theory of surface-generated noise is developed based on neural net.
出处
《舰船科学技术》
北大核心
2015年第2期172-175,共4页
Ship Science and Technology
关键词
神经网络
简正波
海面噪声
neural net
normal-model
sea surface noise