没有合适的资源?快使用搜索试试~ 我知道了~
首页WAVELET METHODS FOR TIME SERIES ANALYSIS
资源详情
资源评论
资源推荐
WAVELET METHODS FOR
TIME SERIES ANALYSIS
Curso: ANÁLISIS DE SISTEMAS DINÁMICOS NO LINEALES:
APLICACIÓN A LOS SISTEMAS NATURALES
Prof. JOSE FCO. GOMEZ GLEZ. jfcgomez@ull.es.
1. Introduction
The first recorded mention of what we now call a ‘wavelet’ seems to
be in 1909 in a thesis by Alfred Haar.
The concept of wavelets in its present theoretical form was first
proposed by Jean Morlet and the team at the Marseille Theoretical
Physics Center working under Alex Grossmann in France.
The concept of wavelet analysis have been developed mainly by Y.
Mayer and his colleagues.
The main algorithm dates back to the work of Stephane Mallat in
1988.
Such research is particularly active in the United States, where it is
spearheaded by the work of scientists such as Ingrid Daubechies,
Ronald Coifman, and Victor Wichkerhauser.
Wavelets are a relatively new way of analyzing time series or images.
Wavelet analysis is in some cases complementary to existing
analysis techniques (e.g., correlation and spectral analysis) and in
other cases capable of solving problems for which little progress had
been made prior to the introduction of wavelets.
2. Summary of Fourier Theory
3. Why Wavelet analysis?
The results of the Fourier transform are the Fourier coefficients A(f),
which when are multiplied by a sinusoid of frequency f yield the
constituent sinusoidal components of the original signal.
To study Non-stationary Signals, in which their frequency
components are changing over time, we cannot use the Fourier
Transform because time information is lost.
To correct this deficiency, Gabor (1946) adapted the Fourier
Transform to analyze only a small section of the signal at a time.
Gabor’s adaptation, called Short-Time Fourier Transform (STFT)
maps a signal into a two-dimensional function of time and
frequency.
剩余44页未读,继续阅读
hai_dao
- 粉丝: 0
- 资源: 5
上传资源 快速赚钱
- 我的内容管理 收起
- 我的资源 快来上传第一个资源
- 我的收益 登录查看自己的收益
- 我的积分 登录查看自己的积分
- 我的C币 登录后查看C币余额
- 我的收藏
- 我的下载
- 下载帮助
会员权益专享
最新资源
- c++校园超市商品信息管理系统课程设计说明书(含源代码) (2).pdf
- 建筑供配电系统相关课件.pptx
- 企业管理规章制度及管理模式.doc
- vb打开摄像头.doc
- 云计算-可信计算中认证协议改进方案.pdf
- [详细完整版]单片机编程4.ppt
- c语言常用算法.pdf
- c++经典程序代码大全.pdf
- 单片机数字时钟资料.doc
- 11项目管理前沿1.0.pptx
- 基于ssm的“魅力”繁峙宣传网站的设计与实现论文.doc
- 智慧交通综合解决方案.pptx
- 建筑防潮设计-PowerPointPresentati.pptx
- SPC统计过程控制程序.pptx
- SPC统计方法基础知识.pptx
- MW全能培训汽轮机调节保安系统PPT教学课件.pptx
资源上传下载、课程学习等过程中有任何疑问或建议,欢迎提出宝贵意见哦~我们会及时处理!
点击此处反馈
安全验证
文档复制为VIP权益,开通VIP直接复制
信息提交成功
评论12