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matlab
这是一个MATLAB课件 是MATLAB在电路分析中的应用(This is a MATLAB software is MATLAB in circuit analysis)
- 2008-06-04 13:36:51下载
- 积分:1
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stopfunction
次算法描写了边缘停止函数的构造,以及如何在计算机上表达此函数,当用于图片时,运行结果是个矩阵。(Time algorithm describes the construction of the edge stopping function, and how to express this function on the computer, when used in the picture, the result is a matrix.)
- 2010-12-21 09:53:23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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WPT
本代码包括小波包能量的提取,可以用于振动声发射噪声以及力信号的特征提取(this code is for energy of wpt Feature extraction such as Acoustic emission,vibration sound and force
)
- 2014-03-22 23:30:16下载
- 积分:1
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read_segy_file
在地球物理勘探中读取与导出SEG-Y格式数据(reads a SEG-Y file and outputs a seismic structure)
- 2016-03-24 13:25:58下载
- 积分:1
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matlab-di10zhangchengxu
matlab-应用程序举例子,实践应用,基础入门,语法基础,编程风格(matlab-application examples, practical applications, introductory, basic syntax, programming style)
- 2010-06-06 01:04:31下载
- 积分:1
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Chapter
turbo码译码仿真经典实例
(Decoding turbo classic example of simulation)
- 2009-05-13 19:45:30下载
- 积分:1
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fenshuDYDtTongYiChaos
说明: 这个文件夹里包括有计算分数阶混沌的几个算法,对于用matlab进行分数阶混沌的研究很有帮助。(This folder includes the calculation of the number of fractional order chaotic algorithms, for use matlab to the study of fractional Chaos helpful.)
- 2010-03-20 14:04:34下载
- 积分:1
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tuxiangfen-ge
基于脉冲耦合神经网络的图像分割 ,初学者使用 (Image segmentation based on pulse coupled neural network, for beginners to use)
- 2015-04-16 21:25:28下载
- 积分:1
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moniPNAH
应用某旋转阵列进行声全息的等效源计算程序,加上正则化及相位计算部分就可以工程应用了。(A work acoustic array function. A mfile of NAH by ESM. please add the regulation function for actually work.)
- 2013-11-18 12:46:28下载
- 积分:1