The methods of Time Averaged Wavelet Spectrum and Wavelet Packet Energy can respectively determine its own Euclidean distance as the only quality inspection threshold of the Rear Bridge.
在时间平均小波谱和小波包能量法中，分别以各自确定的欧式距离作为后桥质量检测的阈值。
Theoretic calculation show that wavelet can be reconstruct from double spectrum of theoretical seismic data for seismic wavelet with different characters.
理论计算表明，对不同性质的地震子波，均可从理论地震记录的双谱中重构子波。
Vibration response signals of vehicle are processed with wavelet analysis to reduce noise efficiently, and road surface roughness is analyzed by road response spectrum.
小波分析处理车辆振动响应信号，可有效降噪，通过路面反映谱分析路面不平度。
The overall design of the double spectrum image system is introduced and puts forward a wavelet fusion method based on fuzzy matrix for the UV and visible double image system.
介绍双光谱图像检测系统的总体设计，针对紫外与可见光双光谱成像系统提出了基于模糊矩阵的双光谱图像融合法。
Common methods for Q-value calculation are rise-time method, spectral ratio method, spectrum modeling method, wavelet modeling method and so forth.
通常用于求取q值的方法有升时法、频谱比法、谱模拟法及子波模拟法等。
A novel method of pattern recognition and fault diagnosis in electrical machine based on the wavelet-neural network is proposed according to the frequency spectrum characteristics of vibration signal.
针对电机振动信号的频谱特点，提出基于小波神经网络技术的电机故障模式识别与诊断的新方法。
The conception of wavelet energy spectrum (WES) is posed by comparing the conservation of total energy in harmonic analysis, power spectrum analysis and wavelet transform.
通过比较傅里叶分析和小波分析中能量守恒公式，提出了小波能量谱的概念。
Enclosing damage diagnosis, this pape studies modal experiment in ambient excitation, optimal placement of sensors and structural damage alarming using wavelet packet energy spectrum.
本文围绕结构损伤诊断，研究基于环境激励的模态试验方法、传感器优化布置原理和小波包能量谱损伤预警方法三方面的内容。
Design the signal pre-treatment model and make use of such methods as Fourier transfer and wavelet analysis, etc to perform filtering treatment for spectrum signals.
设计信号预处理模块，采用傅里叶变换、小波分析等方法，对光谱信号进行滤波处理。
Among the methods for estimating the minimum phase wavelet from its amplitude spectrum, methods of Hilbert-transform, of homomorphy, of zero-phase wavelet and of relaxation-iteration are analysed.
根据子波振幅谱估算最小相位子波已有多种方法，本文对用希尔伯特变换法、同态法、零相位子波法、松弛迭代法等估算的最小相位子波，进行了详细的分析。
The characteristic frequency band of the fault can be identified by wavelet packet decomposition and its energy spectrum conveniently, and the quantification analysis are then performed.
应用小波包分解及其能量谱直观地识别出故障的特征频带，并进行了量化分析。
The characteristic frequency band of the fault could be identified by wavelet packet decomposition and its energy spectrum conveniently, at the same time, quantification analysis were performed.
应用小波包分解及其能量谱直观地识别出故障的特征频带，并进行了量化分析。
Pressure data were analyzed by wavelet transform in wavelet domain. Frequency band energy spectrum and intensity index of ISW based on wavelet coefficient were obtained.
通过基于子波的分析方法，对压力数据进行了分析，获得了基于子波系数的频带能量谱和冲击波强度指数。
The effect of superficial gas velocity and static water height on the wavelet power spectrum is dis- cussed and the vibration mechanism of the tube is analyzed.
采用防水型加速度计，在不同工况下测定洗涤冷却管的振动信号，并用小波变换分析信号；讨论了表观气速和静态液位对小波功率谱的影响，分析了冷却管振动的原因。
A simple method for wavelet simulation was presented. Shape and spectrum of the wave simulation are very similar to the known far -field wavelet. It can meet the need of Marine seismic exploration.
提出一种简单的子波模拟方法，由此得到子波的形态和频谱与已知远场子波相似，可以满足海上地震勘探的要求。
Based on the analysis of cutting regimes' influences on milling force, the spectrum analysis and wavelet analysis are applied on the random cutting force signals.
在分析其切削力显著性影响因素的基础上，对切削力随机信号进行了现代谱分析与小波分析。
Local intermittency measure is introduced to study the properties of local wavelet energy spectrum and to analyze the wind wave data obtained in a wind wave channel.
引入了局域小波能谱的局域间歇性度量，分析了不同风速下的风浪资料，结果表明，局域小波能谱可依局域频率分为三部分。
To extract early fatigue feature of engine bearings, the paper presents an average spectrum method with double-wavelet and the diagnosis examples are used to show the validity of the method.
为了提取机车滚动轴承早期损伤类故障特征，本文提出了一种双重小波平均谱方法，并通过诊断实例验证了方法的有效性。
Based on the wavelet transform, the present paper introduces a kind of wind waves energy distribution, the so-called local wavelet energy spectrum, into studies of wind waves.
基于小波变换，引入了能刻画风浪局域结构的局域小波能谱。
The relation between the digital watermarking and spread-spectrum was analyzed at first, A spread-spectrum adaptive digital watermarking scheme based on the wavelet transform was proposed.
在分析了自适应小波变换和扩频特性关系的基础上，提出一种基于小波变换的扩频数字水印算法。
The spectrum of harmonic wavelet is more box like than other wavelet, At the same time it has following advantages:existing certain function expression;
谐波小波在频域具有良好的盒形谱特性，另外它比通常由二进尺度函数得到的小波还具如下优越性：存在确定的函数表达式；
This paper borrows the idea from spread spectrum watermark, quantizes the wavelet transform coefficients the copyright protected image to produce a binary sequence, which is just the watermark.
本文的水印方法借助扩频水印的思想，通过量化函数对版权保护图像的小波变换系数进行量化，产生的二值序列作为水印。
The result shows that, compared with the time-wavelet power spectrum, the scale-wavelet power spectrum has a higher recognition accuracy and smaller dimension of feature vector.
结果表明，尺度-小波能量谱和时间-小波能量谱相比有较好的分类效果和较低的特征维数。
This scheme makes use of the advantages of wavelet to improve the frequency spectrum compart character between different channels, the transmission is very well even under the badly ISI condition.
这种方案利用小波变换特殊的优越性，使得各子信道之间的频谱分隔特性大大改善，并在码间干扰严重的情况下，仍然具有较好的传输性能。
A new chaos-based spread spectrum watermarking algorithm is developed in the wavelet domain for still images.
提出了一种新的混沌序列扩频水印算法。
A new chaos-based spread spectrum watermarking algorithm is developed in the wavelet domain for still images.
提出了一种新的混沌序列扩频水印算法。
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