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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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Aircraft
aircarft stability with adaptive controller
- 2012-06-01 21:55:23下载
- 积分：1
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projection--coefficient
编写了一种代数重建算法的投影系数计算程序，可用于物体的三维恢复计算。(The projection coefficient of the algebraic reconstruction technique was developed.)
- 2011-06-28 09:38:48下载
- 积分：1
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异步电机基础仿真
异步电机矢量控制仿真，包含各种基础矢量控制仿真，包含速度环，电流环，励磁环等。(Asynchronous motor vector control simulation, including a variety of basic vector control simulation, including speed loop, current loop, excitation ring, etc.)
- 2020-10-21 16:07:23下载
- 积分：1
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Chapter-12
water marking of an image.you can use the code.please try to run the code
- 2013-08-22 18:37:50下载
- 积分：1
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Classification_toolbox
说明： 分类工具箱分类工具箱分类工具箱分类工具箱(Toolbox Toolbox Category Category Category Category Toolbox Toolbox)
- 2010-04-28 15:41:30下载
- 积分：1
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Fonction-non-lineair-et-rna
fonction non lineaire
- 2015-01-27 01:23:51下载
- 积分：1
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CRF
应用条件随机场知识对图像进行分割，场景理解。(Application CRFs knowledge of image segmentation, scene understanding.)
- 2014-02-10 14:06:37下载
- 积分：1
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MATLAB-functions
matlab函数大全，matlab编程函数查询的工具文档(matlab study )
- 2014-11-21 10:59:06下载
- 积分：1
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digital
延时微分方程离散化求根，用零阶保持器将延时微分方程离散化，然后求取其有限个根(delay differential equation descreted solving)
- 2012-05-20 13:56:14下载
- 积分：1
