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circsine
generates circular sine wave grating
- 2010-10-15 19:05:18下载
- 积分：1
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APPENDIXA
Matlab code for fiber bragg grating simulation.
- 2012-04-24 04:23:03下载
- 积分：1
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Huffmann
huffmann coding. needs motion vectors(x,y,prob) from motion estimation. the code also contains tree implementation
- 2013-10-02 08:53:49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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C_MaxMinJuLei
用最大最小距离实现聚类的matlab函数(With maximum and minimum distance to achieve clustering matlab function)
- 2015-05-11 09:22:33下载
- 积分：1
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argridlines
is a MATLAB library which contains routines to draw grid lines on MATLAB plots.
- 2010-07-31 20:10:22下载
- 积分：1
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ofdm_4
说明： 一个完整的OFDM系统仿真程序，本人对原程序修改调试过(Orthogonal frequency division multiplexing (OFDM) is becoming the chosen
modulation technique for wireless communications.)
- 2010-04-13 20:16:22下载
- 积分：1
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CODE
本文概述了使用MATLAB图像去噪的基本原理。以小波分析法为重点，对常用的几种去噪方法进行了分析比较。最后结合理论分析和实验结果，讨论了一个完整去噪算法中影响去噪性能的各种因素。(This paper outlines the basic principles of image denoising using MATLAB. Wavelet analysis, focusing on several commonly used de-noising methods were analyzed and compared. Finally, the theoretical analysis and experimental results, discusses the various factors that affect a complete de-noising algorithm denoising performance.)
- 2015-01-09 09:33:42下载
- 积分：1
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dSPACE...
串口通讯基础
dSPACE中有串口的板卡类型
DS4201S串口板介绍
DS4201S串口硬件和软件
dSPACE串口使用常见问题
(Serial communications infrastructure dSPACE board types in a serial port serial board introduced DS4201S DS4201S serial port using the dSPACE hardware and software FAQ)
- 2011-05-01 11:35:38下载
- 积分：1
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Reference-Answer
此文档提供了信号与系统参考答案，里面有计算过程(This document provides signal and system reference to the answer, which has a calculated process)
- 2013-05-15 11:08:14下载
- 积分：1
