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two_ray_model
Modelo de dos rayos de Andrea Goldsmith (figura 2.5, según expresión
2.12)
f = 0.9 frecuencia en GHz
landa = 0.3/f en m
R = -1 coeficiente de reflexión en tierra
ht = 10 altura del transmisor en m
hr = 2 altura del receptor en m
Gt = 1
Gr = 1
Pt = 1
d=10:.1:100000
phase_diff = 4*pi*ht*hr./(landa*d) aproximación
Pr = Pt*((landa/(4*pi))^2)*((abs((sqrt(Gt)./d) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff)))./d)).^2)
Pr = Pt*((landa/(4*pi))^2)*(1./d).*((abs((sqrt(Gt)) + (R*sqrt(Gr).*(exp(-sqrt(-1)*phase_diff))))).^2)
figure(1), clf,
plot((d),10*log10(Pr/max(abs(Pr))))
grid
xlabel( log_1_0(d) )
ylabel( Potencia recibida (dBm) )
- 2010-02-08 06:31:54下载
- 积分：1
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matlabPPPT
MATLAB基础PPT 方便大家学习 对学习matlab很有好处(MATLAB Fundamentals PPT to facilitate learning is very good for learning matlab)
- 2012-04-20 20:56:58下载
- 积分：1
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classicalHHT
最新经典EMD分解程序，及Hilbert变换程序。由美国人编写，是做HHT变换进行信号分析处理的最佳参考，由本人做详细注释，方便大家理解程序。
(latest classic EMD decomposition processes and procedures Hilbert transform. Prepared by the Americans, and are HHT transform signal analysis and processing of the best reference.)
- 2007-04-21 21:32:35下载
- 积分：1
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UPFC-with-series-and-shunt-FACTS-controllers
UPFC with series and shunt FACTS controllers
- 2014-09-21 04:02:44下载
- 积分：1
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MA4
串的一些基本运算，删除一段子串，置换，求s串中从start位置开始长度为len的子串等等(Some of the basic string operations, delete a substring, replacement, seeking s string starting from the start position of the sub-string of length len, etc.)
- 2009-11-16 13:10:13下载
- 积分：1
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EnergyNormalizationCepSpec
Speech Recognition - Numbers 1 to 5
Energy normalization and time alignment
References:
[1] L. Rabiner and B.H. Juang,Fundamentals of Speech Recognition, Prentice-Hall, 1993.
％ [2] P.E. Papamichalis, Practical Approaches to Speech Coding, Prentice-Hall, 1987.
％ [3] J.D. Markel and A.H. Gray,Linear Prediction of Speech(Speech Recognition-Numbers 1 to 5 Energy n ormalization and time alignment References : [1] L. Paras and B. H. Juang, Fundamentals of Speech Recognition. Prentice-Hall, 1993. % [2] P. E. Papamichalis, Practical Approaches to Speech Coding, Prentice-Hall, 1987. % [3] J. D. Markel and A. H. Gray, Linear Prediction of Speech)
- 2007-06-05 00:33:46下载
- 积分：1
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A1_7
mathews数值分析书的源代码，用matlab编写，第一章第七部分。(mathews numerical analysis of the book' s source code, using matlab, the first chapter of Part VII.)
- 2011-10-20 10:22:47下载
- 积分：1
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fdtd_1d_code
基于fdtd算法的一维程序，采用matlab进行编写，简单易懂(Fdtd algorithm based on one-dimensional program, using matlab to prepare, easy to understand)
- 2013-09-26 19:53:26下载
- 积分：1
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ccexcelInsert
Updating MATLAB(R) figure inserted on a Excel(R) Sheet
- 2013-10-25 17:45:02下载
- 积分：1
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Image-processing-Gonzales
Gonzales的书数字图像处理matlab版的 源代码(matlab codes of image processing by Gonzalez)
- 2013-11-06 13:06:12下载
- 积分：1
