小波函数

指出了适合构造图像数字签名算法的小波函数是db2，并建议了其分解级数。

The findings suggest that the db2 wavelet is suitable for the construction of the image digital signature algorithm and some rationalization proposals be proposed for the decomposition scale of the db2 wavelet . A novel digital signature scheme for image authentication is proposed .

把快速衰减振荡的小波函数运用于10kV配网保护中进行接地故障检测，通过对EMTP仿真数据的分析，证明该方法可以大大提高经高阻接地时故障检测的灵敏度和可靠性。

It uses diminishing and oscillating wavelet to analyze the simulating data of power distribution system by EMTP to detect earth fault . It proves this method may enhance sensitivity and reliability of fault detection in high impedance earth fault greatly .

在多分辨分析框架下构造B样条小波函数。

B-Spline is constructed in Multiresolution Analysis Frame .

利用小波函数对GPS数据的压缩分析

Use of Wavelet Function to the GPS Data Compressing Analysis

多维小波函数中gn的分析

Analysis of g_n in multidimensional wavelet function

利用小波函数生成UWB正交成形脉冲序列的方法

A Method to Generate Orthogonal Shaping Pulses for UWB Using Wavelet

钢结构损伤识别中Db族小波函数选择

Selection on Db 's Family Wavelet Functions in Steel Structural Damage Identification

利用小波函数设计FIR数字滤波器

Designing FIR Digital Filter by Wavelet Function

根据花纹组成的对称性选取了基于二次B样条的小波函数，将灰度变化突变点作为边缘提取出来。

According to the symmetry of pattern composition , wavelet function based on Quadratic B-spline is chosen to extract the edges as the mutated points in gray scale .

比较了5种可用于噪声处理的小波函数对热分析信号DSC曲线预处理的结果。

Five wavelet functions which can be used in de-noising pretreatment to the DSC curves are compared .

利用B-样条函数Nm（x）的性质证明最小支集样条小波函数的其它7个性质。

Seven more properties of minimum support spline wavelet are proved by means of the properties of B-spline function Nm ( x ) .

对EHV输电线路暂态保护中小波函数选择的研究

Analysis of Wavelet Selection in Transient Protection for EHV Transmission Lines

针对现有BP网络在故障诊断中存在的问题，提出将小波函数与神经网络结合构成小波网络，代替BP网络用于故障诊断。

In order to improve the performance of fault diagnosis systems based on a BP-network , a wavelet-network is used in the fault diagnosis instead of the BP-network .

本文依据故障暂态信号的特点，总结了小波函数和尺度的选择原则，并在对选用的B样条函数和小波函数做出明确定义的同时，归纳总结了其等效滤波器组的推导过程。

In this dissertation , according to the characteristic of fault transient signal , the principles of choosing wavelet function and scale are summarized and two kinds of B-spline wavelet function are analyzed and simulated .

提出了基于小波函数的两个正交脉冲，其功率谱密度满足美国通信委员会（FCC）对UWB系统的频谱限制。

Two orthogonal pulses based on wavelet were presented , their spectrum meet FCC spectral mask for ultra wideband ( UWB ) system .

仿真结果表明了基于小波函数脉冲波形的UWB系统性能优于基于传统超宽带窄脉冲的UWB系统。

The simulation results show that the performance of the wavelet-based UWB system is superior to that of UWB system using conventional monocycle .

实现了一种新的有效的基于Morlet小波函数的时频滤波去噪方法。

A new and effective signal de-noise method based on Morlet wavelet is implemented .

并编写了偏相干函数和小波函数噪声源识别的MATLAB程序，量化了各噪声源的贡献，使得各噪声的贡献清晰、明确。

Also , the partial coherence function and wavelet function of noise source identification MATLAB program were written . The contribution of various noise sources were quantified , making the noise contribution clearly .

并研究了用二维小波函数求解第一类二维Fredholm积分方程的方法。

The method using bivariate wavelet function to solve the first class bivariate Fredholm integral equation is researched .

针对FIR正交滤波器方法的缺点，本文根据函数逼近理论，在理论上，证明了正交小波函数可以最佳一致逼近理想滤波器。

After deficiencies of the FIR based orthogonal filter are analyzed , this paper , based on function approximation , theoretically proves that orthogonal wavelets can best approximate the ideal filters .

对Mathieu方程和一个变刚度变阻尼的两自由度问题的仿真分析验证了算法的有效性。小波函数性质、应用特点及小波变换方法研究。

The algorithm is effective on Mathieu equation and two DOF systems with varied stiffness and varied damping .

基于小波函数和Hermitian矩阵特征向量，提出了一种产生超宽带（UWB）正交成形脉冲序列的方法。

A method to numerically generate orthogonal ultra wide band ( UWB ) shaping pulse series was proposed based on wavelet and Hermitian matrix eigenvectors .

以小波函数代替传统BP网络中的S型激活函数，对水稻需水量序列在不同的分辨率下进行调节，得到更加详尽的细节信息，掌握需水量的变化规律。

Replaced the traditional S-shaped activation function with the wavelet function , the series of water required must be regulated under different resolution to obtain more detailed information and master the variation of the amount of water required .

在以MATLAB为平台对信号去噪的过程中，利用不同小波函数对采集的信号进行去噪处理，将结果对比分析后得出了最佳去噪函数。

In the process of signal analysis using MATLAB as a platform , different wave functions were used to eliminate noise in the detection signal , and the best de-noising function was obtained after comparison of the results .

本文在充分利用小波函数的优良性能基础上，综合运用曲线拟合与阈值截断技术，首次提出了用于色谱信号基线校正的阈值拟合技术（TFT）。

In this paper , Threshold Fitting Technology ( TFT ) was presented to subtract the baselines from the original signals and emendate the signals .

选取适合汉语语音基频提取的小波函数，给出基频提取的应用实例和基于FCM模糊聚类分析的汉语四声调值识别结果。

The wavelet function is selected to detect the Chinese speech pitch . The pitch detection and Chinese four-tone recognition based on FCM algorithm are taken as examples to show the practical application .

几种常见小波函数（Haar、Morlet、Mexican-hat）实现图像边缘增强的实验得到了仿真。

In this simulated system , the edge-enhance experiment using several ordinary wavelet functions ( Haar , Morlet , Mexican-hat ) is made .

从多分辨分析（MAR）出发，介绍了正交样条小波函数的构造方法，并讨论了小波函数的衰减性。

Starting with the multiresolution analysis ( MAR ), a method to constructing orthogonal spline wavelets is introduced and the exponential decay of them is discussed in this paper .

通过对不同小波函数的对比，根据负载识别的具体特点，选取Dmeyer小波函数，并确定了识别的具体特征值。2、建立了基于DSP的智能电表硬件架构。

Through the comparison of different wavelet functions , identify the specific characteristics of the load , select the Meyer wavelet function , and to determine the value of the specific characteristics of recognition . 2 、 Established a DSP-based architecture of smart meters .

实践证明，MexicanHat小波函数在用连续小波变换将测井资料转换为小波系数，不同小波尺度对测井信号进行多分辨率处理方面比其它小波函数要好。

It was proved in practice that the Mexican Hat wavelet function is better than the other wavelet functions in converting log data into wavelet coefficients by continuous wavelet transform and in multi-resolution processing of logging signals by different wavelet scales .