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heed
Heed protocal for ad hoc netork
- 2009-06-13 22:46:13下载
- 积分:1
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Dynamic-Analysis-
This program used for analyzing a dynamic system by method of generalized coordinates method.
- 2014-10-16 17:13:53下载
- 积分:1
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FIR
1、验证窗函数 N 变化时,验证其频谱主瓣副瓣比、主瓣宽度的变化。
a)矩形窗函数的 N 变化时,验证其其频谱主瓣副瓣幅度比基本不会发生变化,
而主瓣宽度将会变窄。这说明,当用矩形窗函数设计滤波器时,增大 N 不能使
得阻带衰减减小,但能够减小过渡带。
b)再选取其他的窗如 hamming/hanning 窗,验证当 N 变化时,其频谱主瓣宽
度变化、主瓣副瓣比值变化情况。
2、用窗函数法设计线性相位 FIR 低通,通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI,
阻带衰减不小于 40dB,通带衰减不大于 3dB.
a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否
满足要求,二者有什么不同。
b)使用 hamming 窗,将窗长增大 1 倍,设计 FIR。验证同样的窗函数类型
(hamming),不同窗长度时,设计出来的 FIR 的过渡带宽和阻带衰减都有什么变
化。
3、不使用 Matlab 系统函数得到上一项指标的低通,并与上一项结果比较。
4 用窗函数法设计线性相位 FIR 高通,通带截止频率 wp=0.8PI, 阻带截止频率
ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter.
For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is
The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter.
In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and
Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter
Transition bandwidth.)
- 2017-07-06 11:55:24下载
- 积分:1
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imputation
不完全数据分析MATLAB程序(部分信息重建):最小均方估计、协方差矩阵、缺失值推测(Analysis of incomplete datasets: Estimation of mean values and covariance matrices and imputation of missing values)
- 2020-07-04 06:00:01下载
- 积分:1
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show_psoOptions
this is a npso matlab site
- 2012-05-02 19:32:32下载
- 积分:1
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zuixiaoercheng
最小二乘的递推算法,包括完整的程序,希望对大家有帮助。(Least squares of recursion algorithm, including complete program, and we want to help.
)
- 2011-09-28 11:26:02下载
- 积分:1
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仿真入射到理想导体平板的情形FDTD2
说明: 仿真入射到理想导体平板的情形,边界为PML吸收边界,观察电磁波反射过程(Simulate the case of incident to the ideal conductor plate, the boundary is PML absorption boundary, observe the electromagnetic wave reflection process)
- 2020-04-21 10:56:11下载
- 积分:1
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matlab
一些关于遗传算法的例子,里面是精简的各种特色的遗传算法例子(Some examples of about genetic algorithm, the inside is concise characteristic of various kinds of genetic algorithm example)
- 2012-03-23 16:27:46下载
- 积分:1
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SampleEntropy
matlab计算样本熵源代码,用于度量时间序列的复杂度 (sampen)
- 2010-12-08 09:26:07下载
- 积分:1
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超效率DEA
超效率DEA,可直接运行,但要注意输入量和输出量矩阵的形式,详细见内部说明文档(Super efficiency DEA)
- 2017-08-22 18:16:26下载
- 积分:1