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chebychev
说明: 多波束天线增益chebychev展开 -45db旁瓣水平(Expand multi-beam antenna gain chebychev sidelobe level of-45db)
- 2011-03-09 15:25:03下载
- 积分:1
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Frame-difference-alarm
视频监控,如果有东西经过监控区域就语音报警(有贼闯入)利用帧之间做差的方法(Video surveillance, if there are things after monitoring the regional voice alarm (the thief broke into) the use of the frame do the difference between method)
- 2012-03-25 23:27:25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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starter
基于深度学习的稀疏自编码器,对图像特征进行提取,然后分类(Extraction the encoder based on sparse feature depth study)
- 2021-04-30 09:18:42下载
- 积分:1
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sda
MATLAB构建的三段比幅式距离保护模型
内涵保护模块 S函数模块 (MATLAB built three-spoke distance protection model content protection module S function modules)
- 2012-05-18 14:27:40下载
- 积分:1
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contourlet_toolbox1
二代小波变换安装程序,希望初学者掌握基本既能(Second generation wavelet transform setup, I hope both beginners master the basic)
- 2010-09-20 10:50:41下载
- 积分:1
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SoftstartTest
Simulink model of basic Sorft starter
- 2010-01-28 17:31:21下载
- 积分:1
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houghpeaks
说明: 冈萨雷斯数字图像处理matlab版源码houghpeaks源码(Gonzalez Digital Image Processing matlab source code version of source code houghpeaks)
- 2010-03-21 17:11:14下载
- 积分:1
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five_average
matlab程序 五点滑动平均方法 很好很强大(matlab program five-point moving average method)
- 2013-02-20 15:34:40下载
- 积分:1
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4
说明: 系统的介绍了独立分析原理,并有相关的代码解释(System introduced the principle of independent analysis and code interpretation)
- 2013-03-04 21:25:13下载
- 积分:1