本文所介绍的是采用数字通信技术实现船舶水下噪声测量的数据传输。
In this article, we introduce the digital communication technology which accomplish data transfers in the underwater ship noise test.
研究了基于小波域多尺度树结构的水下噪声信号统计概率模型的建模方法。
The statistics modeling method of underwater noise signal is studied. The hidden Markov tree model in wavelet domain is adopted to model the sea noise and various ship-radiated noise.
本文根据随机逼近原理提出了一种自适应卡尔曼滤波器，适用于被动声纳对水下噪声源的跟踪。
A self-adapting Kalman Filter based on the principle of stochastic approximatation is introduced in the paper. This filter provides an ideal means for the tracking of underwater noise source.
以非线性动力学理论中的相空间重构理论为基础，利用延时法对水下噪声时间序列信号进行了相空间重构。
Time delay method was used to reconstruct the phase space of underwater noise time series based on nonlinear dynamics theory.
本文通过对采用多输入输出模型的舰艇水下噪声系统的分析，给出时域处理的输入对输出贡献网络解的方法；
For analyzing marine underwater noise system by using multiinputs-output model analytical method of contribution of inputs to output in the sense of network and time domain was given.
本文主要介绍近年来船舶行业水下噪声研究进展概况。包括水下噪声形成机理和预报；水下噪声控制技术；水下噪声近代测量分析技术。
The progresses in investigations on the mechanism and predication of underwater noise, its control techniques, new measuring methods and techniques of analysis are reviewed.
声学相似性是水下结构噪声模型试验的基础。
Acoustic similarity is the base of scaled model tests of underwater structure noise.
实验表明这是一种有效的滤除水下激光图像散斑噪声的快速滤波算法。
Experimental results indicate this algorithm is a fast efficient algorithm to filter speckle noise in the underwater laser image.
舰船辐射噪声信号的特征提取技术因其在水下装备中具有重要的应用价值，一直是国内外研究的热点和难点。
The technique of feature extraction of ship-radiated noise is of importance to underwater equipment, and it is a hotspot and difficult area in the national and international research.
以大量的水下目标辐射噪声资料为依托，借助高阶累积量分析法，研究了目标信号的非高斯特性。
For the radiation noises from underwater targets apparently contain non-Gaussian ingredients, their non-Gaussion features were studied through high-order cumulants.
周向激励下加筋圆柱壳体振动和声辐射特性的研究是预测水下航行器壳体噪声的关键环节。
Studies of the sound radiation and vibration of the ring stiffened cylindrical shell under the circumferential excitation are important to predict the noise of the underwater naval craft.
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。
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.
通过声压与振速的联合信号处理，充分利用水下目标辐射噪声场的信息。
Through processing sound pressure combine with particle velocity, the information of underwater target radiation noise field is entirely used.
水下弹性储能推进装置是一种新颖的推进装置，具有结构简单、成本低、噪声很小等显著优点，非常适合装备我国的船舶。
Underwater elastomeric energy storage propulsion unit (UEESPU) is a kind of new propulsion unit, which dramatically features as follows: simple structure, low cost, in particular, low noise.
由于水下信道的复杂性，节点之间的链路质量受到环境噪声干扰和多普勒频移，扩散等其他因素的影响。
Due to the complicated of underwater channel, the links between any nodes are subjected to noise interference, large Doppler shifts and spreads.
使用ANSYS有限元软件建立带有推进轴系的潜艇尾部结构模型，用直接边界元方法进行潜艇尾部结构水下辐射噪声特性分析。
The finite element model of underwater structure with shafting is built by ANSYS. The characteristics of structural acoustic radiation are investigated by the direct boundary element method.
通过用声强测量系统对水下大型结构体进行了辐射噪声声功率的测定以及噪声源的识别和定位的实验。
The measurement of radiation noises from an underwater structure body and identification and location of noise sources were carried out by using a sound intensity measurement system .
随着低噪声安静型潜艇的出现，传统的水下目标探测手段面临着挑战。
Along with the appearance of the low noise peaceful submarine, the traditional undersea detection methods face the new challenge.
为了降低某水下航行装置的辐射噪声，增强其探测目标的能力，对该装置的重要噪声源——传动齿轮箱进行了减振降噪的试验研究。
An investigation was made on the main noise source-the gearbox of the underwater vehicle to reduce the noise and improve its capability of goal-detecting under the water.
利用水声试验场对潜艇的水下辐射噪声进行测量和分析，是先进国家改善潜艇安静性的重要方法。
Testing of underwater radiation noise of submarines using acoustic testing field is one of the important measures for improving the submarine's silence in some developed countries.
针对这一特征，考虑利用激光光源在远处水下产生空化噪声作为假目标，用来模拟潜艇螺旋桨产生的空化噪声。
Make use of the laser-generated cavitation noise to generate false target based on this property, which is simulation of the cavitation noise generated by submarine propeller.
由于激光照射下的水下图像含有大量的散斑噪声，严重影响图像的质量。
To recognize underwater target, extraction must be performed well because there is a lot of speckle noise in underwater laser images.
研究结果为建立精确描述辐射噪声信号的非线性模型、为水下弱目标信号探测和识别提供一定的理论依据。
The results given in this paper, could provide novel theoretical foundation for the nonlinear character description of the ship noise, as well as for the latter detection and recognition.
水下激光图像中夹杂着严重的散斑噪声，受其影响，要识别水下激光目标，就要对图像进行有效的消噪，然后进行目标分割。
To recognize underwater target, segmentation must be performed efficiently because there is a lot of speckle noise in laser underwater images.
本文阐述了水下流噪声产生的机理以及物体表面状态性能对湍流边界层的影响。
In this paper, the mechanism of flow noise production and the methods of flow noise reduction are presented.
水下目标舰船辐射噪声中有很强的线谱成份，这些成份对分类识别是非常有价值的，因此利用线谱特征对舰船目标进行识别是水声领域研究的重要内容。
Ship radiated noises include a lot of line-spectra which are valuable for targets identification. Therefore it becomes an important approach in the studies of underwater acoustics.
改变轴系纵振激励传递途径，在轴系上安装纵振减振器或动力吸振器以降低结构水下辐射噪声。
The structure acoustic radiation caused by longitudinal vibration of shafting is reduced by changing excitation force propagation path and adopting vibration isolator or dynamic vibration absorber.
水下滑翔机器人是一种新型水下机器人，具有噪声低、航行距离远、续航时间长、成本低等特点。
The underwater glider, a new kind of underwater vehicle, has the advantages of low-noise, long range, long duration and cost-efficiency.
水下滑翔机器人是一种新型水下机器人，具有噪声低、航行距离远、续航时间长、成本低等特点。
The underwater glider, a new kind of underwater vehicle, has the advantages of low-noise, long range, long duration and cost-efficiency.
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