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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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RBNN
Algorithm based in graph theory, in which form cluster around of a radius r of a point.
- 2012-03-31 07:14:51下载
- 积分:1
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divide-and-conquer
分治算法的介绍和C源程序。包含数学建模的分治算法的编程心得(The introduction of the divide-and-conquer algorithms and C source.)
- 2012-09-07 16:49:42下载
- 积分:1
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main
Distribution System Reconfiguration
- 2015-03-15 12:36:38下载
- 积分:1
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fourier_filter
this file is sued to compute the fourier transform of a given optical signal
- 2012-01-22 19:18:50下载
- 积分:1
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music
频率估计的根MUSIC方法.y ->数据向量 n -> 模型阶数 m -> 矩阵阶数 w <- 频率谱估计(The Root MUSIC method for frequency estimation.)
- 2013-12-05 13:14:17下载
- 积分:1
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Solutionpartialdifferentialequations
偏微分方程的MATLAB解法,能快速求解,阐述了其编程思想,很实用(Solution partial differential equations )
- 2009-11-17 10:46:52下载
- 积分:1
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视频分析程序(STFT和CWT,DWT)
数字信号处理的视频分析中短时傅立叶变化STFT和连续小波变化CWT和离散小波变换DWT的算法源程序,在实际中已应用,(digital video signal processing of short-time Fourier analysis of changes STFT and continuous wavelet transform CWT and DWT DWT algorithm source, in practice has been applied.)
- 2005-04-11 14:28:14下载
- 积分:1
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Aitken
利用迭代格式及Aitken加速后的新迭代格式求解方程,实现用的语言为matlab。
(Iterative scheme and Aitken accelerated iterative scheme to solve the equation.)
- 2012-04-01 11:30:21下载
- 积分:1
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MATLABFE_III
MATLAB finite element code
- 2013-11-03 16:49:05下载
- 积分:1