水声学

海洋内波与海洋水声学、海洋生物学、物理海洋学和军事海洋学等学科有着密切的联系，因而受到各国政府和海洋学家的普遍关注。

Ocean internal waves is in close relationship with marine acoustics , marine biology , physical oceanography and military oceanography , so it is paid widespread attention to by every government and oceanographer .

导出了水中透声目标表面边界条件的时域有限差分（FDTD）表达形式，将FDTD在水声学中的应用范围扩大到无切应力的有限声阻抗目标的散射问题。

The proposed finite difference boundary condition expands the scope of application of FDTD to scattering problems of objects with a finite acoustic impedance but without tangential stress .

匹配场处理（Matched-FieldProcessing，简称MFP）是匹配滤波／波束形成理论在水声学中的延续和发展，是目前水下被动源定位的主要手段之一。

As one of the main techniques for passive source localization , matched-field processing ( MFP ) is a continuation and generalization of the matched filter / beamforming in underwater acoustics .

橡胶是一种重要的水声学材料。

Rubber is an important underwater acoustic material .

光纤传感器和水声学及其换能器在海洋技术上的应用

Application of the Optical Fiber Sensor and Underwater Acoustic Transducer on the Marine Technology

水声学探测已成为鱼类资源评估的重要手段之一。

Hydroacoustic survey has been one of the great tools in fish resource evaluation .

在水声学试验中，往往需要高精度的时间信号做为标记和参考。

It always takes a high-precision timing signal as a sign or for reference .

水声学研究进展

Advances of research work in underwater acoustics

在水声学领域中，利用声纳进行探测是一个重要的方面。

It is very important for detecting targets with the sonar in the field of underwater acoustic .

利用瞬态流和水声学原理设计研制了自振空化喷嘴，实验研究了该喷嘴的空化起始能力，并与锥形喷嘴进行了比较。

Self-resonant cavitating nozzle was designed with the principles based on theory of fluid transients and hydro-acoustics .

在水声学领域，对声纳数据直观的解释和分析需要运用可视化技术来对声纳数据进行研究。

The technology of data visualization is used in explanation and analysis of the data of sonars .

研究声波在海洋中的传播规律是理解水声学现象的基础。

The research on the underwater sound propagation is the foundation to understand and explain the underwater acoustic phenomenon .

基于贝叶斯定理的海底参数统计反演是当前水声学研究的热点之一。

Statistical inversion of seafloor parameters based on Bayesian inference is an interesting topic in the research of underwater acoustics .

利用水声学方法反演感兴趣的海洋环境参数是水声学研究中一个十分重要的研究内容。

The study about inversion of interested ocean environmental parameters is an important problem in the field of underwater sound .

水声学研究进展同样，在水声学领域内也需要用可视化技术对声纳接收到的数据进行研究。

Advances of research work in underwater acoustics It is necessary to study the data from sonar system in underwater acoustics .

声场预报是水声学中最基本的研究课题之一。

We called this way " numerical prediction of acoustic field ", which is one of the most basic subjects in underwater acoustic .

匹配场声源定位是水声学研究中的经典问题，在过去的几十年中，出现了多种匹配场处理算法。

Source localization by matched-field processing is a classical problem in underwater acoustics ; many methods were presented in the past several decades .

本文运用理论分析，根据水下爆炸和水声学的基本知识，分析了水下爆炸的基本特性，得出水下爆炸声源的基本模型；

The signal source model of underwater explosion is obtained through theoretic analysis . According to the basic knowledge of underwater explosion and acous t-ics .

弹性波传播的理论在地震学、水声学、地球物理和土木工程中的应用日益广泛，近年来受到的关注越来越多。

Elastic wave propagation theory has been used widely in seismology , underwater acoustics , geophysics and civil engineering , and concerned more and more in recent years .

浅地层剖面探测是一种基于水声学原理，连续走航式探测方法，可利用高频小能量的声发射换能器震源对应高频声接收换能器获得较高分辨率的剖面。

The shallow profile prospecting is a continuous walking and sailing detection method based on acoustic principles . It can get high resolution profiles with high frequency source .

水中目标的回波特征仿真是水声学的一个研究方向，其形成的水下目标模拟技术可应用于海上声学试验设计、水声设备考核、水下声目标欺骗等领域。

Simulation about the target echo characteristics is a research direction of underwater acoustics . It is the base of underwater simulation technology , which can be applied to experimentation design at sea , underwater acoustic equipment test , and underwater acoustic target decoy and so on .

本文介绍了利用流体动力学和水声学的基本原理在特殊喷嘴结构中产生自激脉冲射流的机理，通过实验研究了腔室结构参数和回压等因素对自激效果的影响规律。

In this pa-per , the mechanism of self-excited pulsed jet emerged in nozzle with special texture is introduced by use of the basic principles of hydrodynamics and hydroacoustics , and the rules influencing self-excited effects by cavity-chamber structure parameters and back pressures etc. are analyzed through test .