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ganzhiqi
测试智能信息处理课程实验,感知器算法,用matlab实现,(Experimental tests of intelligent information processing course,Perceptron algorithm, matlab
)
- 2013-04-01 08:57:29下载
- 积分:1
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WE
说明: 波动方程有限差分数值模拟,采用二阶差分,AEA自由表面边界条件(Finite difference numerical simulation of wave equation using second order difference and AEA free surface boundary conditions)
- 2019-04-29 17:49:50下载
- 积分:1
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lms
基于最小均方的LMS准则的LMS程序喜欢的就下吧(Based on the LMS least mean square LMS procedure guidelines)
- 2009-05-12 09:41:36下载
- 积分:1
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matlabGUI
matlab GUI设计过程中新手号帮手。(Matlab GUI design process, new helper。)
- 2012-05-12 00:18:44下载
- 积分:1
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LEx2
finds the ratio between number of local extrema of a signal (vector) to the size of the signal (vector)
- 2010-02-05 23:04:50下载
- 积分:1
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gm
说明: 灰色预测模型是一种模糊预测算法,可以对信息不完全的或不知发展规律的变量进行预测(Gray prediction model is a fuzzy prediction algorithm, you can not know or incomplete information to predict the development of the law of variable)
- 2013-08-26 17:54:50下载
- 积分:1
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yichuan11
利用遗传算法求使 达到最大值时的x1和x2的值(using genetic algorithms to achieve the maximum value for the x1 and x2 value)
- 2007-01-26 16:28:33下载
- 积分:1
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tp1
GPS mode for modeling and mode for modelingmode for modelingmode for modelingmode for modelingmode for modeling
- 2011-06-22 21:27:17下载
- 积分:1
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03607_28
DFT进行频谱分析时的三种现象
1、混叠:对连续信号采样,要求连续信号是带限的,采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。
采样前加低通滤波器防混叠
2、频谱泄漏:DFT对时域信号进行了截断(相当于采样信号乘了一个窗函数),时域的乘积相当于频域卷积,改变了原信号频谱。
改用其他窗函数(非矩形)改善泄漏。
3、栅栏现象:DFT 只给出了频谱在采样点上的取值,采样点间的频谱内容丢失。(DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.)
- 2007-05-08 16:22:17下载
- 积分:1
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vectorcontroljj
矢量控制方法在matlab/simulink中的仿真模型。详细且基础,有助于新手学习。(Vector control method in matlab/simulink the simulation model. Detailed and foundation to help novices learn.)
- 2013-12-31 11:29:41下载
- 积分:1