建立了目标噪声信号传播和衰减的数学模型。
Build target acoustic signal's transmission and attenuation math model.
由此可利用信号双谱，提取舰船辐射噪声信号的非高斯成份。
Therefore, bispectrum is used to extract the non gaussian ingredients from the noise signals of ships.
这里给出了噪声信号在背景噪声中提取噪声信号的模拟例子。
Finally, a simulative example is given, which is extracting noise signal from mixture of noise signal and background noise.
通过分析采集的噪声信号，了解了风机周围的噪声分布特点。
Through analyzing the noise signals, we find out the characteristics of noise distribution around fan.
针对螺旋桨叶片数识别问题，建立了螺旋桨空化噪声信号模型。
In order to solve the problem of propelle blade-number recognition, the propelle radiated-noise model is built on the basis of five hypotheses.
利用奇异值理论提取包含矩阵的奇异值作为气缸爆发噪声信号的特征。
Singular value is extracted as to feature of cylinder explosive noise signal from Cover Matrix with singular value theory.
该包含矩阵加强了气缸爆发噪声信号在气缸爆发频率所在频段的信息。
The Cover Matrix enhanced information of cylinder explosive noise signal at frequency band of cylinder explosive.
按噪声信号采集方式、重建算法和结果表示方式对该技术进行了分类。
The techniques are categorized in terms of noise signal acquiring methods, reconstruction algorithms, and display modes.
对驱动性能进行了分析，结果表明驱动力矩的频段与噪声信号频段是分离的。
Driving performance analyses show that the frequency spectrum between driving moments and noise signals is separated.
针对大背景噪声，本文提出采用快速ICA算法对碰摩与噪声信号进行分离。
The fast ICA algorithm is proposed to separate the rub-impact signal from the noise signal.
文中对井下噪声信号进行频谱分析，用噪声信号中的频谱信息来识别井下流体类型。
In this paper, frequency spectrum of downhole noise signal is analyzed, and the spectrum information extracted is used to identify the types of downhole fluid.
分析了LED芯片非接触检测系统噪声信号的功率谱，研究了噪声信号的抑制方法。
The noise power spectra of the non-contact detection system for LED chips and the noise suppression methods are discussed.
利用逆序法对驱动桥噪声信号的平稳性进行了验证，指出其噪声信号为非稳态信号。
Reversed order method is used to prove that the noise of driver axle is a nonstationary signal.
同时从工程的角度提出了抑制这种噪声信号切实可行的措施，并在实践中得到了证实。
A practical measure in engineering for suppressing the noise signal is proposed, and it is proved in practice.
只有有效的滤除噪声信号，才能获得准确有用的电能质量信息，才能分析得出可靠的结论。
Only effective filtering noise signal, the accurate useful information to the power quality analysis can be obtained, the conclusion of power quality analysis is reliable.
而散射光子会使探测事件的位置严重失真，我们可以通过能窗设置排除散射光子和噪声信号。
Scatter photon can make distortion of the position of detected events. Scatter photon and yawp can be removed by energy window.
通过对实际测量的内燃机噪声信号的关联维数计算分析，证明了内燃机噪声信号的分形特性。
From the correlation dimension analysis of noise signals of internal combustion engine, it was proved that engine noise signals have an obvious fractal characteristic.
传统信号去噪方法常采用门限法对噪声信号的小波或小波包变换做阈值处理以达到去噪的目的。
In traditional denoising methods for signals, we usually use the method of threshold to achieve denoising by the threshold disposing of wavelet packet transform.
为了准确客观地检测出爆裂噪声的存在，提出了基于噪声信号奇异性的光耦器件爆裂噪声检测方法。
In order to detect the presence of burst noise in optocoupler device accurately and objectively, a new method was put forward based on singularity of noise.
因而本文自行设计了调理模块。该模块具有信号线性放大、过滤噪声信号、提高信号稳定性等功能。
So a conditioning module was designed, which was linear signal amplification, filtering noise, improve signal stability functions.
采用白噪声信号作为标准声源的输入信号，在常温无气流条件下对消声器实物模型进行了静态放声试验。
After a white noise signal has been taken as the input of a standard sound source, a static acoustic test is conducted for a prototype silencer without air flow and at the normal temperature.
通过对新测取的噪声信号样本进行检验，证明该方法能有效地判断待检样本的类型，诊断连杆轴承故障。
Case research proved it's effective to recognize new data of fault model and diagnose the faults of connecting rod bearing .
汉语语言清晰度测试信号与干扰噪声信号按照一定的信噪比混合，由听音人进行汉语语言清晰度主观评价。
Test signals are mixed with noise signals according to a given SNR and the Chinese speech intelligibility are rated by listener.
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.
它比山达基教漂亮的小型电子测量仪强那么一点也是一个用来拾取四周环境中的噪声信号然后让指针跟着摆动的小玩意。
It's little more than a fancy small-scale version of a Scientology e-meter, a gadget that picks up on noise in the environment and makes a needle on a dial wiggle.
在仿真试验中，比较了给定功率阶跃扰动信号、白噪声信号及伪随机信号分别作为输入信号进行辨识的结果。
In simulation experiment, results of identifying models using step disturbance of given power signal, white noise signal, and pseudorandom signal as input signals have been compared.
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.
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。
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。
The paper mainly demonstrates the principles of the noise power pedigrees dispose and radiated noise areas impact in partial coherence analysis.
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