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Newmark_B-VS-HPD_L-VS-Wilson
结构随机振动中关于Newmark 与精细积分法的对比,在精度一致的情况下效率的提高( a small program about Newmark and NPDL)
- 2020-10-21 20:27:23下载
- 积分:1
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mpam
tarsime mpam ba mfil va mohasebe antropy ...
- 2012-08-09 19:27:28下载
- 积分:1
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蚁群算法
说明: 蚁群算法简单快速入门,有利于初学者快速了解蚁群算法的过程。(The ant colony algorithm is simple and quick.)
- 2020-09-25 15:47:48下载
- 积分:1
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PMSM
永磁电机仿真相关程序,用Matlab编写,希望大家能用上!!!!(PMSM control!!Very Good!!!)
- 2011-08-30 18:30:05下载
- 积分:1
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mcode
基于最小二乘的解扩重扩波束成形算法matlab实现(the implementation of beamforming algorithm based on least squares spread despread algorithm in matlab.)
- 2013-08-04 11:14:39下载
- 积分:1
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IFData_3Carrier_1e5
Xilinx WCDMA_V5 ddc_virtex5
CPRI IFData_3Carrier_1e5
- 2010-07-21 16:17:08下载
- 积分:1
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amethodforimagefusion
文中的方法是把图像分块,小波分解得到低频分量、高频分量,然后计算每一块的对比度,把图像块划分为清晰块、模糊块,把清晰块和模糊块相邻的区域定义为边界区域,融合时,直接选取清晰块作为融合后的相应块,对于边界区域,在小波分解的基础上采用基于对比度的像素选取的方法进行处理。(Paper, the method is to image segmentation, wavelet decomposition are low frequency, high frequency components, then calculate the contrast of each piece, the image block is divided into clear blocks, fuzzy block, to clear blocks and fuzzy block is defined as the border region adjacent to area, integration time, a clear block directly select the corresponding block as a fusion, for the border region, the wavelet decomposition on the basis of the pixel-based contrast method selected for processing.)
- 2020-06-25 22:40:02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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新建文件夹
说明: s.f.e编码、huffman编码源程序,运行环境:matlab(S.f.e code, Huffman code source program, running environment: matlab)
- 2019-06-09 19:02:11下载
- 积分:1
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Chapter_3
包括内插,还有成形滤波器等等调制时所用的matlab文件(Including interpolation, as well as shaping filter modulation, etc. used by the matlab file)
- 2007-11-24 19:25:24下载
- 积分:1