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fftbianhua
（1） 熟悉连续信号经理想采样前后的频谱变化关系，加深对时域采样定理的理解．
（2） 熟悉时域离散系统的时域特性
（3） 利用卷积方法观察分析系统的时域特性．
（4） 掌握序列傅立叶变换的计算机实现方法，利用序列的傅立叶变换对连续信号，离散信号及系统响应进行频域分析．
((1) familiar with the continuous signal to the manager before and after the sampling of the spectrum changes relations and deepen the time-domain sampling theorem understanding. (2) familiar with the time-domain system discrete time-domain (3) using deconvolution method of analysis in time domain characteristics. (4) master sequence Fourier Transform computer, using the Fourier transform sequence of continuous signals, Discrete signal system response and frequency domain analysis.)
- 2007-07-02 12:44:20下载
- 积分：1
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ac_abc_dq0
三相交流电的dq0变换，由abc变换到dq0坐标系再变换为abc坐标系(dq0 to abc)
- 2012-10-01 16:27:07下载
- 积分：1
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melbankm
说明： melbankm函数的源程序。这个函数也要被melcepst函数调用，用来进行计算Mel倒谱系数。这个函数的作用是构造mel滤波器组(function [x,mn,mx]=melbankm(p,n,fs,fl,fh,w)
MELBANKM determine matrix for a mel-spaced filterbank [X,MN,MX]=(P,N,FS,FL,FH,W)
)
- 2011-04-11 19:59:24下载
- 积分：1
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MatPIV161
很好的粒子图像测速（PIV）Matlab源代码，本人在Matlab 2010下测试通过。(Particle image velocimetry (PIV) Matlab source code, I tested it using the Matlab 2010.)
- 2010-05-07 15:58:48下载
- 积分：1
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matlam_learning_2nd_ed
document is about matlab learning.document is about matlab learningdocument is about matlab learningdocument is about matlab learning
- 2012-05-30 19:55:39下载
- 积分：1
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SW
说明： 小世界网络生成,生成20个节点的小世界网络(small world network)
- 2013-01-21 19:31:11下载
- 积分：1
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Field_II_GUI
超声波层析成像算法，执行文件，基于MATLAB(Ultrasonic tomography algorithm, executable file, based on MATLAB)
- 2020-12-13 17:59:15下载
- 积分：1
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chengxu
为了提高通信系统的信息传输速率，人们提出了UWB通信系统，即Ultra-Wideband 通信系统。在UWB系统中，信号的带宽一般都在GHz的量级，这么宽的带宽造成了UWB系统和现有的通信系统频谱的重叠。为了降低对现有通信系统的影响，UWB信号的设计需要满足一定的频谱模板。如果一个信号的频谱基本满足频谱模板的规定（即在绝大部分频段内功率小于规定区间的上限），我们可以认定其为一个UWB信号。(In order to improve communication systems, information transmission rate of UWB communications systems have been proposed, namely, Ultra-Wideband communication systems. In the UWB system, the signal bandwidth will generally be in the order of GHz, caused such a wide bandwidth of UWB system and the existing communications system spectrum overlap. In order to reduce the impact of the existing communication systems, UWB signal design needs to meet certain spectral mask. If a signal spectrum can basically meet the spectral mask (that is, in most of the provisions of band power is less than the maximum range), we can assume it as a UWB signal.)
- 2009-11-29 09:54:29下载
- 积分：1
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MATLAB
产生长度为1000的标准正太分布的随机信号，画出时域波形及频谱；
采用u=255的非均匀PCM编码，每符号为8bit，画输入-输出关系图；
计算信号量化噪声比（SQNR）；
信道误码率为10-3；
解码，并画出u律反变换后的信号时域波形及频谱。
扩展要求：
采用均匀PCM、量化级数可变、信道误码率可变。
( have a standard length of 1000 is too random signal distribution, draw time-domain waveform and frequency spectrum u = 255 using the non-uniform PCM encoding, each symbol for 8bit, drawing input- output relationship diagram calculated quantization noise signal than (SQNR) channel bit error rate of 10-3 decoder, and law to draw u the signal after the inverse transform time-domain waveform and frequency spectrum. Expansion of the requirements: uniform PCM, quantization level variable, a variable channel bit error rate.)
- 2009-07-07 01:35:25下载
- 积分：1
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E_pulse
E_pulse methode target identification
- 2012-03-22 18:39:51下载
- 积分：1
