海洋声学

在海洋声学中，通常采用特征模展开方法来求解无界区域中声波的传播，其控制方程是Helmholtz方程。

In ocean acoustics , the propagation of waveguide in an infinite domain is usually solved by the Eigenmode Expansion Method ( EEM ) under the Helmholtz equation .

波导不变性原理是当前海洋声学研究的热点之一。

The invariant principles of waveguide are the interesting problems of ocean acoustics at present .

Kraken海洋声学模型及其声传播与衰减的数值试验

Kraken Marine Acoustic Model and Its Numerical Experiment for Acoustic Propagation and Decay

海洋声学技术和信息处理

Ocean Acoustic Technique and Information Processing

海洋声学测温及声层析法

Ocean acoustic thermometry and tomography

本装置的完成为海洋声学国家级重点实验室构建了一个海洋环境模拟平台。

This device can work as a platform of ocean environment simulator in the State Key Laboratory of Ocean Acoustics .

双轴声道传播是一检验海洋声学计算方法的“标准”波动问题，某些算法在遇到这一问题时是不适定的。

Sound propagation in two-axis channel is a benchmark problem for computational methods of underwater acoustics , and some computational methods are ill-posed .

声传播是海洋声学研究的基本内容，作为正问题，它是声探测与声层析等逆问题的基础。

Acoustic propagation is essence content in ocean acoustics . As a forward problem , it is the basic of backward problem such as acoustic detection and tomography .

海洋声学国家级重点实验室为了研制开发高新技术水声产品，需要对水声传感器的动态数据进行测试。

For the development of new-technic underwater acoustic detection equipment , the State Key Laboratory of Ocean Acoustics needs to test the dynamic data of the underwater acoustic sensor .

它对海洋声学、海洋工程、海洋军事等方面产生了重要影响，因此，内波传播的研究是非常重要的工作。

Internal wave has great influence on ocean acoustics , ocean engineering and ocean military affairs etc , so the study of internal wave propagation is of significant importance .

海底浅部沉积物声学特性直接影响海洋声学环境，影响对海底面、海底浅表层沉积物及其下伏地质体和人工构筑物的声波探测效果。

Acoustic characteristics of seabed sediments are basic to underwater acoustic environment and to explorations of sea bottom , surficial and sub-bottom sediments and underlying geologic bodies and man-made obstructions .

语音去混响的技术也广泛地应用在多径传播、建筑声学、海洋声学、地震数据分析、超声波检测、生物医学、振动声学、雷达声纳等许多声学领域。

SDR technology is also widely used in many acoustic fields such as multipath propagation , architecture acoustics , ocean acoustics , seismic data analysis , ultrasonic measure , biomedicine , vibration acoustics , radar and sonar .

以水中运动目标为例，给出了水声环境下，合成信号、环境噪声、海洋声学的数学模型和合成环境系统仿真实验。

Based on the example of moving underwater target , the model of synthetic signal , environment noise and ocean acoustics are shown . The synthetic system simulation tests are presented in the underwater sound environment , respectively .

随着海洋声学技术的应用和相关理论的深入研究，人们发现，将其应用于海洋监测是目前，也是今后相当长时期内最重要、最有效的手段之一。

With the application of the ocean acoustics technology and deeply researches of the relative theories , it was found that it is one of the most important and effective method for the ocean measurement from now to a long time in the future .

主要研究内容和成果有：（1）在探讨声场与声纳方程，声波传播规律的基础上，分析了海洋声学测深系统的性能。

The main research contents and achievements are as follows : ( 1 ) According to the law of transmission of sound wave in the sea , the performance of echo sounders is analysed by the basic parameter such as frequency , band width and pulse length .

讨论了2种海洋内波声学监测方法。

Two acoustic methods for monitoring ocean internal waves are presented .

海洋气候声学测温计划

Project of Acoustic Thermometry of Ocean Climate

海洋综合测量声学系统间信号干扰的分析

Analysis of Acoustic Signal Interference in an Ocean Integrated Surveying System

大尺度监测海洋的新方案海洋声学层析照像

Ocean acoustic tomography & a new way for large-scale oceanic monitoring

文中阐述的声学信号处理方法对在海洋调查研究、海洋环境保护研究和海洋环境监测中声学技术的应用可提供一个借鉴。

They also can be us - ed for physical oceanographic research work , The methods described in this paper can be adopted as a reference for the acoustic application in oceanographic studies , in environmental protection and monitoring .

海洋声层析法作为检测海洋内部变化一有力手段，正面临着海洋声学大尺度观测新挑战。本文就海洋声传播的绝热近似；

Ocean acoustic tomography as a powerful tool for monitoring ocean interior is facing a new challenge observing the ocean in global scale .