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ins
捷联惯导方程矩阵在matlab环境下的仿真源代码程序(SINS matrix equation matlab source code under the simulation program)
- 2010-07-04 10:33:22下载
- 积分：1
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Simulation-of-the-flow-around-a-vertical-axis-win
The future 980 version of LS-DYNA will include Computational Fluid Dynamics (CFD) solvers. The main objective of these new solvers will be to perform fluid structure interactions by directly solving the Navier-Stokes equations and by using any LS-DYNA Lagrangian model for the solid part.
- 2014-12-21 01:12:32下载
- 积分：1
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2007mcm
西点军校军事数学建模matlab程序编程(West Point Military mathematical modeling matlab programming)
- 2012-08-05 18:49:17下载
- 积分：1
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支持向量机用于对样本数据或函数的回归预测 svm
支持向量机用于对样本数据或函数的回归预测，此文件源码是用C#编写的 可以在Matlab环境下实现(Support vector machine is used to sample data or the regression function, the file C# source code is written in the Matlab environment to achieve)
- 2010-11-07 09:05:38下载
- 积分：1
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Degree_Distribution.m
用Matlab实现复杂网络度分布的计算。(Matlab realization of complex networks with degree distribution calculations.)
- 2010-03-15 08:53:56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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GSAALB
TDMA系统中多用户多业务的无线接入控制和时隙分配算法(TDMA systems in multi-user multi-service wireless access control and time slot allocation algorithm)
- 2011-12-19 19:38:20下载
- 积分：1
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非线性动力学 nonlinear
非线性动力学、分岔 Matlab 程序实现，弹簧质量系统在简谐激励作用下的受迫振动，弹簧的恢复力F与变形x的关系为F=kx3，动力学方程为...30cosmxcxkxFwt++= 其中，给定参数，1m=，0.3c=，1.0k=，1w=，初始条件为(0)3.0x=，.(0)4.0x=设系统的动态参数为F0，绘出系统状态变量随参数变化分岔图，绘图参数对应的系统各周期及混沌状态的时间历程图、相轨迹图、Poincare映射图(Nonlinear dynamics, bifurcation Matlab program, the forced vibration spring-mass system under harmonic excitation, spring restoring force F and deformation x relationship the F = kx3, kinetic equation for ... 30cosmxcxkxFwt++ = wherein the given parameters, 1m = 0.3C = 1.0k = 1W =, initial condition (0) 3.0x = (0) 4.0x = set of the dynamic parameters of the system for the F0, plotted system status system cycle and chaotic state variables with parameter changes bifurcation diagram, drawing parameters corresponding time course of the phase trajectories, Poincare map)
- 2021-03-06 19:29:30下载
- 积分：1
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信号分段
说明： 一个长信号进行分析时，可能需要对信号分段，本程序提供一种分段方法(When a long signal is analyzed, it may be necessary to segment the signal)
- 2020-11-02 19:59:56下载
- 积分：1
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利用权重进行特征选择 rat_wang_lamda
进行特征选择，利用权重进行特征选择，代码解释充分(Feature selection is carried out, feature selection is carried out with weight, and the code is fully interpreted.)
- 2018-03-22 15:19:17下载
- 积分：1
