Flow noise in the interior fluid of a vector hydrophone towed linear array is analyzed.
研究矢量拖曳式线列阵声呐护套管内的流噪声场。
A hair cell vector hydrophone based on micro electro mechanical system (MEMS) was presented in this paper.
提出了一种纤毛式微机电系统(MEMS)矢量水声传感器的仿生组装技术。
Firstly, the principles and characteristics about column type vector hydrophone are studied in this paper.
首先,本文从理论上对柱形矢量水听器的工作原理及其特性进行了分析。
Noise covariance matrix of a single vector hydrophone is studied with experiment results in the shallow water.
研究单个矢量水听器的噪声协方差矩阵,并给出了浅海近岸水域的试验结果;
By the experiment at result, the influence of isotropic noise field on detective capability of vector hydrophone is tested.
通过实验室实验,初步验证了半各向异性噪声场对矢量水听器检测性能的影响。
This thesis tries to solve the problem of miniaturizing vector hydrophone by using compact and high sensitivity accelerometer.
本文试图通过采用微型高灵敏度的加速度计解决矢量水听器的小型化问题。
So the technology associated with vector hydrophone becomes a very important investigative aspect in underwater acoustic field.
因此,矢量水听器相关技术正在成为水声工程领域令人瞩目的研究方向之一。
The vector hydrophone gives attention to two aspects: the vector quantity and scalar quantity , so more attention is paid on it.
矢量水听器由于兼顾了实际海洋声场的标量和矢量性质,而越来越受到人们的关注。
Under ideal condition, one vector hydrophone can obtain infinite gain, if energy flux of noise can be counteracted in the entire space.
在理想情况下,若噪声能流在全空间能充分抵消,单个矢量水听器便可获得无限大的增益。
Detailed design of the vector hydrophone is described and the experimentally measured sensitivity and directivity characteristics are given.
叙述了该矢量水听器的设计方法,给出了相应的灵敏度和指向性测试结果。
The RTD oscillator, physical structures and fabrication process of vector hydrophone are designed, and the signal processing has been discussed.
分析并设计了基于共振隧穿二极管的振荡电路、矢量水声传感器物理结构以及制作工艺,讨论了传感器信号处理方法。
There are several ways of estimating direction of arrival in use of the vector hydrophone: acoustic intensity detection, beam revolving and vector equations.
利用矢量水听器进行方位估计的方法主要有声强检测、旋转波束和矢量方程组等。
The acoustic vector hydrophone is a new type sensor, which can simultaneously measure the pressure and particle velocity of the same point in acoustic field.
声矢量传感器是一种新型传感器,它可以空间共点,同时测量声场中的声压和振速信息。
According to different existences of noise background and signals, there are several approaches to azimuth Angle estimation based on a single vector hydrophone.
根据不同的噪声背景和信号形式,单矢量水听器有多种方位估计方法。
The sea trial of fiber optic vector hydrophone is accomplished. High sensitivity, fine directivity, good low-frequency response and applied performance of fib...
实验结果表明,该光纤矢量水听器具有很高的灵敏度、较好的空间指向性和良好的低频响应,并有了初步的海上实用性能。
The signal detection technique with vector hydrophone measures acoustic vector components comprising the direction information comparing to the traditional hydrophone.
相对于传统的声压水听器矢量水听器检测技术能检测到的包含空间方位信息的声矢量信号。
This paper reports a kind of two-dimensional combined vector hydrophone of resonant-column type in which a piezoelectric accelerometer are used as are sensing element.
介绍一种采用两只压电加速度计作为敏感元件的二维同振型组合矢量水听器。
An acoustic vector hydrophone measures the scalar acoustic pressure and the vector acoustic particle velocity, thus the DOA can be estimated by single vector hydrophone.
矢量水听器由于能获取声场中标量(声压)和矢量(振速)信息,因此单个的矢量水听器就可实现目标方位估计。
In this paper, beam patterns of vector-hydrophone linear array using different components of vector hydrophone were presented and compared with pressure hydrophone array.
本文研究了矢量水听器均匀线阵的采用不同方式进行波束形成的波束图,并和声压阵相应的量进行了比较。
Fixed shell type vector hydrophone belong to mechanical type acoustic vector hydrophone, however moving shell type vector hydrophone belong to inertial type acoustic vector hydrophone.
不动外壳型矢量水听器属力学型矢量水听器,而同振型则属惯性型矢量水听器。
Studies the measurement of low frequency radiation noise from an underwater target by a vector hydrophone, discusses the method of measurement and presents the test results in the sea.
研究利用矢量水听器测量水下目标低频辐射噪声的问题,并给出了测量方法和海上试验结果。
Combining the traditional acoustic positioning system with the vector hydrophone, we have designed a new portable system named as the long base line passive acoustic positioning system.
将传统的水声定位系统与矢量水听器相结合,设计了一种全新的轻便型长基线被动水声定位系统。
The acoustic energy flux detector based on vector hydrophone using counteractive technique of spacial acoustic energy flux, can obtain spatiotemporal gain proportion with time-bandwidth product.
基于矢量水听器的声能流检测器利用空间声能流抵消技术相对于声压检测器可获得与时间带宽积成正比的时空增益。
In this paper, the DOA of sources are estimated using MUSIC algorithm by a vector-hydrophone ULA (Uniform Linear Array) to improve the DOA estimation resolution.
本文采用矢量水听器均匀线阵研究了利用MUSIC算法对声源进行方位估计,以提高对源方位的估计精度。
Pressure gradient hydrophone is one of the implementation forms of acoustic vector sensors while another form is the vibrating sphere.
压差水听器是水声矢量水听器的一种实现形式,同振球则是另一种实现形式。
The results indicate that ESPRIT algorithm based on vector sensor can obtain higher resolution frequency estimation than that based on pressure hydrophone.
结果表明基于矢量传感器的算法比基于声压传感器的算法具有更高的频率估计精确度。
The results indicate that ESPRIT algorithm based on vector sensor can obtain higher resolution frequency estimation than that based on pressure hydrophone.
结果表明基于矢量传感器的算法比基于声压传感器的算法具有更高的频率估计精确度。
应用推荐