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FiberGratingSpectra
传输矩阵法计算啁啾光栅反射谱
本节中给出传输矩阵法计算啁啾光栅反射谱和
时延的完整M at lab 程序实例, 本段代码在
M at lab513 和W indow s2000 环境中运行通过。运行结果如图8 所示。可以改变光栅长度、有效折射率、折射率调制深度、啁啾系数等参数来获得不同参数下光栅反射谱和时延曲线。如果打开“％ 切趾”行的屏蔽符“％ ”则可得到切趾后光栅反射谱和时延特性曲线, 此时计算所得的曲线将比图8 中所示的曲线平滑很多。(Transfer matrix method to calculate reflection spectrum of chirped grating is given in this section transfer matrix method to calculate chirped grating reflection spectrum and the delay of a complete example of M at lab procedures, the above code in M at lab513 and W indow s2000 environment to run through. The results shown in Figure 8. Can change the grating length, the effective refractive index, refractive index modulation depth and chirp coefficient parameters to obtain different parameters of grating reflection spectrum and the time delay curve. If you open Apodization line shielding Fu can be grating after apodization reflection spectrum and the delay characteristic curve, the curve at this time will be calculated as shown in Figure 8 a lot of curve smoothing.)
- 2008-12-20 15:07:24下载
- 积分：1
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fdtd3D_UPML
metlab computation for UPML
- 2009-11-13 10:39:24下载
- 积分：1
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example4_4
例4：在sinc(t)信号中叠加噪声，分析对应频谱
fs=100 采样频率,必须大于两倍基带信号最高频率
ts=1/fs 采样时间间隔
T=2 时间窗大小
(
x=x+0.1*randn(1,N)
x=awgn(x,-10, measured )
figure
plot(t,x)
title( 时域信号图 )
xlabel( t /s )
y=fft(x,N)
figure
if mod(N,2)~=0
N=N-1
end
f=linspace(0,fs/2,N/2)
plot(f,abs(y(1:N/2))*2/N)
title( 叠加噪声的sinc(t)信号频谱 )
xlabel( f /Hz )
figure
y0=y(1:N/2)
P=y0.*conj(y0)/N
P=10*log10(P)
plot(f,P)
title( 功率谱 )
xlabel( f /Hz )
)
- 2010-05-25 20:59:03下载
- 积分：1
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write_htk_inihmm
Matlab与HTK的接口程序，用于生成HTK中HMM的初始文件。(Matlab and HTK interface program used to generate the initial HMM file in HTK.)
- 2013-09-09 09:40:32下载
- 积分：1
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google-earth-DEM
googl earth 高程提取工具！对做google earth开发有一定的帮助！(googl earth elevation extraction tool! Google earth for doing development will certainly help!)
- 2015-01-12 12:22:15下载
- 积分：1
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NLmeansfilter
non local mean filter
commande example
I =mat2gray(imread( eight.tif ))
mn= 0
vr= 0.02
J = imnoise(I, gaussian ,mn,vr) add noise
output=NLmeansfilter3(J,7,3,0.1)
- 2011-12-23 09:31:24下载
- 积分：1
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idealCentre20150304
一个房地产项目微官网源码，动态效果不错，自适应各种手机屏幕(A real estate project micro website source code, dynamic effect is good, the adaptive to various mobile phone screen)
- 2015-03-23 14:37:57下载
- 积分：1
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powerline_db3_noiseclean
matlab用于电力线消噪，用小波分析的方法，分别给出不同的阈值下的仿真结果，经过调试能生成仿真图(matlab for power line de-noising using wavelet analysis method, respectively, different thresholds are given under the simulation results, after adjustment to generate simulation map)
- 2008-04-11 14:26:04下载
- 积分：1
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timing-of-employ
说明： 例子为初学者使用定时器时，对特殊寄存器的设置作参数。(failed to translate)
- 2011-02-20 16:32:17下载
- 积分：1
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fzpid
模糊PID仿真程序,MATLAB环境开发.(fuzzy PID simulation program, MATLAB development environment.)
- 2007-03-15 16:31:53下载
- 积分：1
