The chaotic feature of the ship-radiated noise is analyzed.
分析了舰船辐射信号的混沌特征。
A method for extracting modulated information from radiated noise was discussed.
讨论了一种从辐射噪声中提取调制信息的联合方法。
It also discusses some control methods for reducing the radiated noise from oil pan.
文中还论述了降低油底壳辐射噪声的控制方法。
This paper described two methods on how to predict the radiated noise of engine oil pan.
介绍了对发动机油底壳进行噪声预测的两种方法。
A method of simulating vessel's radiated noise with specified power spectrum is presented.
给出了一种能够模拟具有指定功率谱特征的舰船辐射噪声的方法。
The radiated noise can be analyzed and its spectrum can be recorded by signal processing cell.
信号处理模块分析噪声并记录频谱特性和时域统计特性。
An automatic detection and record system for the research of the ship radiated noise is presented.
实现了一种用于研究船舶辐射噪声的自动探测和记录装置。
An experimental study on engine surface vibration and radiated noise is carried out in this paper.
本文以一台车用六缸柴油机为例，研究了发动机的表面振动和发动机的表面辐射噪声。
The results show that the method adopted can effectively suppress the radiated noise from cover surface.
结果表明，采用的方法能有效抑制飞轮壳的表面辐射噪声。
This is caused by the complexity of underwater target radiated noise and the variety condition of the sea.
这是由于水下目标辐射信号和海洋环境的复杂性、多变性造成的。
Shielding is required because high impedance circuitry is susceptible to pickup of spurious radiated noise.
由于高阻电路容易拾取杂散的辐射噪声，所以需要采取屏蔽措施。
The result indicates that the method is an effective way to extract the modulated information from radiated noise.
结果表明，该方法用于噪声中调制信息检测是一种有效的手段。
The result shows that acoustic optimization of thin shells of Engine samp may reduce perfectly the radiated noise.
结果表明，对内燃机薄壳结构进行声学优化，可以大大减小噪声辐射。
The sources of ship-radiated noise rhythms are analysed, the frequent types of rhythms are classified in this paper.
本文分析了舰船辐射噪声中节奏的物理根源，指出了常见的节奏类型。
The source level of the ship-radiated noise is estimated by analyzing the measurement records from passage ship noise.
通过对实测舰船数据分析估计舰船辐射噪声的总声源级。
This paper applies a short-term energy analysis method and subjective hearing characteristics to analyze ship-radiated noise.
文章提出了利用短时能量分析与人的主观听觉相结合的方法进行船舶辐射噪声特征提取。
The spectrum of radiated noise from ships consists of a continuous broadband spectrum and a discrete narrow-band line-spectrum.
船舶辐射噪声的功率谱由连续的宽带谱和离散窄带线谱组成。
More and more automobile enterprises have attached important to research into the control of radiated noise from engine surface.
对发动机表面辐射噪声控制的研究已受到越来越多的汽车生产企业的重视。
One of the most fundamental and effective methods to reduce automobile noise is the control of radiated noise from engine surface.
控制发动机表面辐射噪声是降低汽车噪声最根本有效的方法之一。
The characteristics of frequency correlation and group time delay of ambient noise and ship radiated noise in the sea are studied.
本文研究海洋环境噪声与舰船噪声的频间相关与群延迟特性。
Contrapose this phenomenon, a new method based on fourth-order cumulants diagonal slice for detecting ship-radiated noise is presented.
针对这一情况，本文提出了一种使用四阶累积量对角切片检测舰船辐射噪声的方法。
Feature extraction of targets radiated noise and design of targets classifier are key issues of passive sonar target recognition system.
目标噪声特征提取和目标分类器设计是被动声纳目标识别系统的关键技术。
Feature extraction of targets radiated noise and design of targets classifier are key technique of passive sonar target recognition system.
目标噪声特征提取和目标分类器设计是被动声呐目标识别系统的关键技术。
The paper mainly demonstrates the principles of the noise power pedigrees dispose and radiated noise areas impact in partial coherence analysis.
本文主要分析偏相干分析中噪声信号功率谱的处理及声源辐射面积的大小对相干分析结果的影响这两个问题。
Submarine Guide Vane Propeller is a new device developed by CSSRC to improve powering performance and reduce propeller-radiated noise of submarine.
潜艇前置导叶螺旋桨是CSSRC为提高潜艇快速性和降低螺旋桨噪声而开发的一种新装置。
The results show that the method can effectively separate the dynamic modulation from other parts of radiated noise, and extract harmonic features.
结果表明，该方法可以有效地实现动态调制分量与其他信号的分离，准确提取谐波特征。
The realization of OSF in the case of real target radiated noise in the background of Gaussian white noise for equal spaced line array is illustrated.
利用真实舰船航行辐射噪声作为目标及干扰，正态分布高斯白噪声作为噪声背景，在基元等间隔线阵上实现了最佳空间滤波器。
The approach of how to extract underwater acoustic signal with auditory model is studied and the auditory features of ship-radiated noise is extracted.
研究了基于听觉模型的水声信号特征提取方法，提取了舰船辐射噪声的听觉特征。
A new method of low intensity radiated noise measurement is shown using acoustic combined sensor and combined signal processing with pressure and particle velocity.
本文研究运用组合传感器和声压、振速联合信号处理技术进行低噪声通过特性的测量。
The results show that main progress has been made towards controlling structurally radiated noise by adaptive active means applied directly to the vibrating structure.
通过对该控制系统简化分析，从理论上探讨结构声自适应主动控制系统鲁棒性能及其最优实现问题。
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