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untitled12
光伏电站储能控制中蓄电池的充放电系统,希望能帮助有需要的呃人(Control of photovoltaic power plant energy storage battery charge and discharge system, hoping to help those in need Eren)
- 2021-04-14 15:48:55下载
- 积分:1
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Matlab-Training-Basic
matlab在金融方面应用的内部培训,基础篇(internal training matlab applications in finance, Basics)
- 2014-05-20 18:57:33下载
- 积分:1
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wman1
说明: ldpc码在无线城域网中应用,matlab(ldpc yards in the wireless MAN applications, Matlab)
- 2006-01-09 19:04:01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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topD
柔度最小化的拓扑优化程序(采用优化准则法)(TOPOLOGY OPTIMIZATION CODE)
- 2009-10-20 17:14:50下载
- 积分:1
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ObjectnessICCV_ver02
matlab segmentation
- 2012-06-08 19:16:10下载
- 积分:1
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xplan
Creates a package named XPLAN as a wrapper over DBMS_XPLAN
- 2015-03-03 17:01:53下载
- 积分:1
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Ajmal-signal-project
Bandpass and Nulling Filter Design project on matlab
- 2012-02-04 02:39:29下载
- 积分:1
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536079212FSK
matlab实现的FSK调制解调程序,请大家使用,并提出建议。谢谢(matlab implementation of the FSK modulation and demodulation process, let us use, and make recommendations. Thank you)
- 2010-07-12 09:48:19下载
- 积分:1
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optfilter
最优化FIR数字带通滤波器的设计,用来对加速度信号进行带通滤波,提取运动信息。(the design of an optimal FIR digital band-pass filter.)
- 2012-05-24 20:21:38下载
- 积分:1