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lorenz
通过4阶龙格库塔方法求解混沌系统的微分方程(Through four order Runge-Kutta method for solving differential equations of chaotic systems)
- 2013-07-22 21:00:00下载
- 积分:1
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main_OFDM
说明: OFDM系统点对点收发的误码率分析,采用瑞丽信道,可以对收发帧数等进行修改(BER for OFDM system)
- 2011-04-10 16:30:14下载
- 积分:1
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MPPT
这个文件是建立光伏MPPT模型十分有用的文件,能帮助建立matlab模型(This document is to establish the model of photovoltaic MPPT very useful document that can help build matlab model)
- 2013-11-27 23:54:51下载
- 积分:1
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CHUANJI
利用MATLAB的SIMULINK仿真的串级控制系统仿真源码(The SIMULINK simulation using MATLAB cascade control system simulation source)
- 2013-08-26 08:26:43下载
- 积分:1
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double_pendulum
说明: 求解简单微分方程。模拟双摆运动并附简单说明材料。(For animation, the program uses Matlab s normal plot command combined with the drawnow command. It is based on the ode45 solution of the corresponding differential equations.
Comprehensive documentation is provided, including a sketch of the most important steps of how to derive the equations of motion. A simple Mathematica notebook contains all of the manipulations. )
- 2021-01-21 15:28:45下载
- 积分:1
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Wilson-matlab
翼型的优化算法,运用matlab编程,使用wilson和遗传法(Airfoil optimization algorithm, using matlab programming, the use of Wilson and genetic method)
- 2021-04-08 15:49:00下载
- 积分:1
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pdediffusion
采用matlab语言对扩散微分方程进行了求解的M文件(The code is diffusion pde equation in matlab language)
- 2011-05-26 15:55:11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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radio
初学雷达信号仿真的同学们可以好好看看。应该说是最基础 里面有MATLAB程序。写的比较好,对雷达发射信号有个很好的理解,以及和脉冲压缩的思想。同时也附有matlab程序。
内容提要:
雷达工作原理
线性调频(LFM)信号
LFM脉冲的匹配滤波
matlab仿真结果(Radar signal simulation of beginner students to have a look. Should say is the foundation which are MATLAB program. Write better, on the radar transmit signal to have a good understanding, and pulse compression of ideas. At the same time with MATLAB procedures.Abstract:The radar working principleLinear frequency modulated ( LFM ) signalLFM pulse matching filterMatlab simulation results)
- 2012-01-05 15:41:42下载
- 积分:1
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cell
说明: 利用图像分割来检测细胞,版本R2008B(Using image segmentation to detect the cell, version R2008B)
- 2010-03-16 19:39:07下载
- 积分:1