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MATLAB-IMAGE
matlabr软件应用的图形图像处理,很专业的教材,事例很多(matlabr graphic image processing software applications, very professional materials, many examples)
- 2013-11-22 17:25:08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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natlab
SOM算法,matlab程序,是经典的教科书的例子程序,不错的源码(SOM algorithm, matlab program, is a classic textbook examples of procedures, good source)
- 2017-05-24 12:48:38下载
- 积分:1
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GA-and-PSO
GA遗传算法与PSO离子群组合算法matlab程序,以下是使用本程序的简单介绍与使用步骤
1)修改设计变量个数
NPar变量定义的是设计变量个数,本例为8,使用时需根据自己实际情况进行修改。
2)修改设计变量的上下限
VarLow 与VarHign定义的是设计变量的上下限,使用时需根据自己实际情况进行修改。记住,变量的维数,要与1)变量个数一致哦。
3)修改FunName
变量FunName定义的是优化目标函数值的计算函数,根据自己实际情况改成自己的函数名。
4)修改最大迭代次数MaxIterations
要根据自己的问题实际,通过试算找出合适的MaxIterations数。
如果,你对GA与PSO比较精通,还可以通过修改KeepPercent、CrossPercent来提高算法的效率,但是对于初学者来说,上述的步骤与操作已经足够,所以其它不再赘述。祝你好运!
(GA genetic algorithm and PSO Ion combination algorithm matlab program, the following is a brief description of the use of this procedure with the use of step a) to modify the design variables are defined by the number of NPar variable number of design variables, in this case eight, when used according to need their actual situation changes. 2) modify the design variables on the lower limit is defined VarLow and VarHign upper and lower limits of design variables need to be modified when used according to their actual situation. Remember, dimensions variable, the number to be with a) variable consistency oh. 3) Modify FunName variable FunName definition is to optimize the objective function value calculation function, according to their actual situation into their own function name. 4) Modify the maximum number of iterations MaxIterations issue according to their actual, through spreadsheets to find the appropriate number MaxIterations. If you are more proficient GA and PSO, but also can)
- 2020-10-15 21:07:33下载
- 积分:1
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FD
说明: 小型时域有限差分的程序,在matlab环境下运行。(Small FDTD program, run in matlab environment.)
- 2014-02-08 15:03:05下载
- 积分:1
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Adloffilem
code for finding logo in figure
- 2010-12-16 20:24:01下载
- 积分:1
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lorenz
说明: 洛伦兹混沌多涡卷吸引子源代码,复杂程序,用于毕业设计(Multi-scroll chaotic Lorenz attractor source code, complex procedures for graduation)
- 2011-03-24 16:27:46下载
- 积分:1
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Singer
利用Singer模型算法对机动目标进行跟踪,算出X方向量测噪声方差以及y方向量测噪声方差(Singer model algorithm used to track maneuvering target, calculate the X direction of the measurement noise variance and the y direction of the measurement noise variance)
- 2021-05-16 09:30:02下载
- 积分:1
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internaltestportion
Fiber wireless communication system using matlab
- 2013-03-04 21:31:43下载
- 积分:1
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reference-adaptive-Model-in-control
matlab code for beging cc motor...
- 2013-12-16 23:13:47下载
- 积分:1