Waveletanalysis相关论文
The wavelet analysis technique is a powerful tool and is widely used in broad disciplines of engineering,technology,and ......
Improved wavelet analysis in enhancing Electromagnetic Campatibility of underground monitoring syste
Underground Electro Magnetic Interference (EMI) has become so serious that there were false alarms in monitoring system,......
As a special type of distributed denial of service (DDoS) attacks,the low-rate DDoS (LDDoS) attacks have characteristics......
This study aims at the mechanism of piston pin noise of full floating system and resolving the piston pin noise problem ......
Multiple Time Scale Relationships of Bankfull Discharge with Streamflow and Sediment Transport in th
This paper presents a study on the characteristics of multiple time scales of bankfull discharge and its delayed respons......
RBF Artificial Neural Network Model based on Wavelet De-noising for Hydrological Time Series Simulat
Hydrological system is a nonlinear unstable complex system influenced by various factors.Hydrological time series are th......
Component Recognition with 3D Fluorescence Spectra Based on Wavelet Analysis and Weighted Least Squa
Wavelet analysis is a widely used approach in signal processing.In this work,we apply it to the component recognition of......
Through the Matlab simulation,analysis of the influence of remanence and initial phase angle of load switching to excita......
Signal Acquisition of Structure Impact and Its Locating Experiment Based on Piezoelectric Sensor Tag
In order to solve problems of wired monitoring of structure impact damage such as large amount of wiring,high cost of in......
Hydrologic Characteristics of Runoff in the Lower Yellow River under Human Acitivities and Climate C
Under human activities and climate change,the renewal ability of water resources in the Yellow River basin has reduced c......
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Wavelet analysis is internationally recognized up to the minute tools for time-frequency.It gets an unprecedented develo......
In the field of financial market behavior research, forecasting the change of stock market trend with classifier is very......
By using the research methods of combination of wavelet analysis and multivariate GARCH-BEKK mode to measure the fluctua......
针对遥感图像由于云的覆盖无法判读地物的信息, 从云占据图像中的低频成分这一特征出发, 用小波分析法研究小波变换后在近似系数、......
Wavelet-based classification and influence matrix analysis method for the fast discrimination of Chi
A discriminant analysis technique using wavelet transformation (WT) and influence matrix analysis (CAIMAN) method is pro......
Shift Endpoint Trace Selection Algorithm and Wavelet Analysis to Detect the Endpoint Using Optical E
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大尺寸、高分辨率大气湍流相位屏的快速模拟对于在实验中验证自适应光学系统的性能及控制算法的稳定性至关重要。提出了一种基于小......
Intracranial hemorrhage (IH) is a major problem of neonatal intensive care. The incidence of IH is typically asymptomati......
用小波理论重新分析了光学信息处理的基本理论。首先用小波理论重新分析惠更斯-菲涅耳原理,并据此提出波前滤波思想,初步奠定了小......
唐卡图像在其保存和搬运过程中较易出现细微的划痕,针对所出现的垂直(水平)划痕进行了自动检测算法研究。垂直(水平)划痕实质上属......
基于频域小波分析方法研究了大气湍流相干结构特性,采用Mexican Hat小波函数分析了近地面风速脉动数据资料。根据能量极大值原则识......
针对薄云覆盖的灰度遥感图像其清晰度低、难于判读地物信息等问题, 提出了小波分析方法用于灰度遥感图像去云。以256 pixel×256 p......
X射线多能计算机断层扫描（CT）方法通过多次圆轨迹扫描获取不同能量下的投影数据进行图像重建，扫描效率较低，受辐射剂量较大。分能段CT......
A fully non-contact laser ultrasonic detection platform is constructed with laser excitation and laser Doppler scann......
Spatio-temporal variability about various extreme precipitation indices over recent 5decades(1961-2010) have been ca......
In the past several decades, the Tibetan Plateau climate has significant change, mainly as follows: the temperature ......
The change and prediction of temperature and precipitation in the Dawen River basin using the statis
In order to explore the climate change in the Dawen River basin,based on the data of six weather stations in the Dawen R......
目的了解采暖初期太原市大气PM_(2.5)污染状况,探讨燃煤增加对城市大气PM_(2.5)质量浓度的影响。方法记录和整理太原市9个监测点20......
In this paper we analyze daily mean, minimum, and maximum temperature data collected at 119 meteorological stations over......
Assessing artificial neural networks coupled with wavelet analysis for multi-layer soil moisture dyn
本文通过对荣华二采区10...
在近场光学扫描显微镜中,由于扫描方式的原因,使得输出的数字图像中存在着随机性的行噪音,采用传统的滤波方法无法有效的去除这种......
采用子波分析方法对几种不同的但较典型,且具有代表性的信号作了分析,指出了周期性信号、脉冲式信号和分形信号,经子波变换后所具......
针对小波阈值法无法准确从强噪声中检测到故障信号的问题，提出了一种基于概率与小波分析的故障检测方法。首先基于分位数的定义将各......
小波分析是一种新的信号处理技术，具有良好的时频局部化特征。为了克服BP网络自身算法的缺陷，得到更高的学习精度和更快的收敛速度，使......
由渐近信号的小波分析出发，研究了渐近信号小波变换的渐近估计方法。着重讨论了渐近信号在小波变换下的特征，构造了信号瞬态频率提取......
利用小波分析技术系统地对简雪梁裂缝位置进行识别。从理论上进行了系统分析和四阶矩利用小波分析具有识别突变领事的特点，有效地识......
分析了小波变换及其多尺度分析方法的基本性质，揭示了有限长双尺度方程在紧支集小波基构造中的重要地位，并从正交共轭滤波器的构造入......
奇异信号往往载有设备运行状态特征的重要信息。小波分析理论突破了传统傅里叶变换等信号处理方法，在时域和频域上可同时对信号实现......
通过对Ｈａａｒ小波系数与变频信号瞬时频率关系的分析，提出了基于Ｈａａｒ小波分析的旋转机械高速启动过程振动信号瞬时频率的计算方法。并通过利用......
本文在路面不平度数值模拟基础上利用离散二进小波变换对路面不平度进行了多层小波时域分析、统计分析和频域分析，得到了路面不平度......
在水文时间序列分析中引入了子波变换法，通过对水文时间序列的离散子波变换（ＤＷＴ），给出了计算不文过程变化特征的信息系数（ＩＣＦ）的方法，比较了表征......
