摘要
本文研究了在水声基阵设计中用数值模拟产生海洋宽带环境噪声场的方法。通过设计宽带特殊频率响应滤波器和精确时延滤波器来构造海洋宽带空间均匀噪声场中的阵列信号(噪声),并给出了圆环形阵的计算机模拟。计算机模拟结果验证了该方法的实用性和有效性,该方法能够较真实地模拟出海洋宽带环境噪声中任意基阵接收的阵列数据。
A numerical method for simulating broadband undersea noise field is proposed in this paper. The key points are the creation of broadband digital filter with specific frequency response to match the required spectrum of undersea noise, and the design of precise timedelay filters on which broadband outputs of a hydrophone array in undersea isotropic noise field can be generated. Computer simulation for a circular array is performed. It is shown that the method is effective and practical for application.
出处
《声学技术》
CSCD
2003年第1期30-32,64,共4页
Technical Acoustics
基金
国家自然科学基金资助课题
关键词
宽带噪声场
数值模拟
特定频率响应
水声基阵
broadband noise field
numerical simulation
specific frequency response
hydrophone array
