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ECG_Noise
心电信号特征点检测的算法研究,针对在心电信号检测中传统的小波方法受锢于二进小波变换的尺度只能是
按2的整次幂取值的缺陷，本文利用连续小波变换在尺度取值上可选取非二进
尺度的特性，系统研究了连续小波变换在心电信号检测中的应用，并提出了一
个基于连续小波变换的心电信号检测算法(ECD signal detect,QRS )
- 2010-05-17 23:12:26下载
- 积分：1
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matlab-expcode
matlab部分实验原码,从朋友那里要过来的,相信对刚学这个软件的人朋友们有用.(Matlab part of the experiment, the original code, from friends to the apartment. I think just learning the software useful friends.)
- 2006-12-25 23:38:09下载
- 积分：1
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信号时频分析 timefreq
信号时频分析，小波变换，加窗（汉明窗，矩形窗，布莱克曼窗）(Time-frequency analysis, wavelet transform, windowed (Hamming window, rectangular window, Blackman window))
- 2020-07-01 14:20:01下载
- 积分：1
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kuopintiaopin
直接序列扩频和跳频扩频直接序列扩频和跳频扩频(直接序列扩频和跳频扩频)
- 2009-03-18 14:00:19下载
- 积分：1
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multi-filter
说明： 信号处理中的多相滤波，信号处理中的多相滤波，信号处理中的多相滤波，信号处理中的多相滤波(Signal processing in multi-phase filtering, signal processing in multi-phase filtering, signal processing in multi-phase filtering, signal processing in multi-phase filtering)
- 2010-03-21 22:45:37下载
- 积分：1
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intelligent-algorithm
包括各种智能算法的详细介绍和具体的实例分析，附带matlab的源码，是不多的学习资料.(The analysis includes a variety of intelligent algorithms are detailed and specific examples, with Matlab source code, is a few learning materials.)
- 2015-04-09 08:24:49下载
- 积分：1
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fangzhen
实验一 双极性矩形随机信号的归一化功率谱密度一
1.1 功率谱密度简介
平稳过程的任何一个非零样本函数的持续时间为无限长，显然都不满足绝对可积和总能量有限的条件。因此，它的傅里叶变换不存在即没有频谱函数。所以我们用功率谱密度来表述其频谱特性。
随机过程的任一实现是一个确定的功率型信号。而对于任意的确定功率信号f(t)，它的功率谱密度为：
式中， 是f(t)的截短函数 对应的频谱函数。f(t)是平稳随机过程 的一个实现。而随机过程某一个实现的功率谱密度不能作为过程的功率谱密度。过程的功率谱密度应该看作是任一实现的功率谱密度的统计平均，即
虽然该式给出了平稳随机过程的功率谱密度，但我们通常都不利用这个式子来计算功率谱。我们知道，确知的非周期功率信号的自相关函数与功率谱密度是一对傅里叶变换。对于平稳随机过程，也有类似的关系，即
和
对于平稳随机过程我们通常先求出其自相关函数再利用上式求出其功率谱密度。
1.2 实验要求
1.了解平稳随机信号功率谱的概念及计算方法
2.仿真不同占空比，等概、非等概双极性矩形随机信号的归一化功率谱密度
3.分析不同信号所包含的频谱分量，有无直流分量和定时分量信息
(A pair of rectangular random experiment polarity signal sample return a nonzero function of any duration power spectral density of a 1.1 power spectral density of a stationary process Introduction of infinite length, apparently not satisfied absolutely integrable and the total energy of the limited conditions. Therefore, it is the Fourier transform of the spectrum that does not function does not exist. Therefore, we use the power spectral density to express their spectral characteristics. Any random process is a realization of a certain type signal power. For arbitrarily determined power signal f (t), its power spectral density is: wherein, is f (t) is a function corresponding to the truncated spectrum function. f (t) is a stationary random process of realization. The random process to achieve a certain power spectral density can not serve as the power spectral density of the process. Power spectral density process should be seen as a statistical average power spectral density of any r)
- 2014-11-30 20:39:29下载
- 积分：1
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Waveletpacket
小波包提取特征值。
matlab
往复式压缩机(Wavelet packet eigenvalue extraction. reciprocating compressor matlab)
- 2009-04-10 15:43:56下载
- 积分：1
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Wavelet-Analysis-and-Applications
介绍小波分析基础，二进小波变换，规范正交小波基的构造，小波变换与滤波器组，自适应小波变换，以及小波变换的应用等等(Wavelet Analysis and Applications)
- 2013-09-03 19:32:56下载
- 积分：1
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Etcheverry_Jose_R_200811_PhD_thesis
Most countries are facing a multiplicity of challenges directly related to the
pr ent ways in which they currently generate and use energy. Human-induced climate
change, rising pollution levels, decreasing energy security, and resource wars are all
increasingly linked to the widespread use of non-renewable sources of energy. These
interrelated challenges present an ongoing and pressing policy-making dilemma to
develop and implement sound energy solutions. Evidence regarding the imperative need
for creative energy solutions is amassing a variety of reputable sources. The Fourth
Assessment Report by the Intergovernmental Panel on Climate Chance (IPCC) ranks
amongst the most salient of these sources. This IPCC report clearly points out that drastic
reductions in the use of fossil fuel use are essential to reduce greenhouse gas (GHG)
emissions to thereby minimize the most detrimental impacts of climate change.
- 2014-12-23 04:04:34下载
- 积分：1
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