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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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cycloconverter
Implementation of a 3 phase cycloconverter inverter in matlab/simulink
- 2012-06-03 21:38:10下载
- 积分:1
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project
Visual Cryptography is based on cryptography
where n images are encoded in a way that only the human
visual system can decrypt the hidden message without any
cryptographic computations when all shares are stacked
together. This paper presents an improved algorithm based
on Chang’s and Yu visual cryptography scheme for hiding
a colored image into multiple colored cover images. This
scheme achieves lossless recovery and reduces the noise in
the cover images without adding any computational
complexity.
- 2015-03-13 14:51:23下载
- 积分:1
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sift-0.9.13.tar
sift的matlab代码,是最新的,效果很不错,大家可以(sift the matlab code, is the latest, the effect is pretty good, we can)
- 2008-04-08 15:34:05下载
- 积分:1
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noice-reduction
通过小波分解的手段对时间序列信号进行降噪。内有英文说明书。 (The noise reduction of time series signals by means of wavelet decomposition . There are instructions in English.)
- 2011-10-28 10:39:50下载
- 积分:1
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newwmark
newmark求解线性结构动力反应,非线性不行,可用于有限元(Newmark solving dynamic responses of linear structures)
- 2017-08-17 18:25:55下载
- 积分:1
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1234027297-NFS-SHIFT-UNPACK-TOOL
说明: banana is a cool fruit
- 2020-03-06 19:21:13下载
- 积分:1
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two-way-relay
two way relay channel channel estimation(two way relay )
- 2011-12-06 15:58:47下载
- 积分:1
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w1
实现求圆形、三角形、矩形的面积和周长。要求和说明如下:
(一) 定义接口sharp接口
(二) 通过实现接口定义Rect、Triangle、Circle的类,并且一个构造方法,并实现求面积和周长的方法(其中三角形斜边的计算公式c=Math.sqrt (width * width + height * height ) )
(Seeking to achieve circular, triangular, rectangular area and perimeter. Requirements and are described as follows: (a) define the interface sharp interfaces (two) by implementing the interface definition Rect, Triangle, Circle of class and a constructor method, and implement methods for the area and perimeter (where the hypotenuse of the triangle formula c = Math.sqrt (width* width+ height* height) ))
- 2013-12-19 21:22:57下载
- 积分:1
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SR
说明: 侯晓迪的显著性检测模型SR的matlab代码,亲测可用(SR matlab code )
- 2014-05-02 19:57:24下载
- 积分:1