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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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hyperspectral
有关“高光谱遥感图像的小波去噪方法”的文章!写的不错(Hyperspectral Imagery Denoising Method Based on Wavelets)
- 2010-03-12 09:30:44下载
- 积分:1
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Untitled123
说明: MATLAB 用函数实现图像直方图显示并比较不同插值得到的三幅图的差别(MATLAB with the function to achieve the image histogram display and compare different interpolation to be the difference between the three pictures)
- 2010-03-21 01:41:08下载
- 积分:1
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TutorMatlab
MATLAB PROGARM Naive Bayes
- 2012-05-09 22:47:43下载
- 积分:1
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shipinfenxi
很有用的时频分析工具,内附各个函数的说明,方便调用。(Very useful tool for time-frequency analysis, containing a description of each function, easy call.)
- 2013-08-28 00:23:54下载
- 积分:1
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Downloads
关于半脆弱水印的几篇文章,其中包括小波变换的应用以及contourlet变换的应用等,涉及领域为半脆弱数字图像水印已经篡改检测。(Semi-fragile watermarking of several articles, including the application of wavelet transform and Contourlet transform application areas for semi-fragile digital image watermarking has tamper detection.)
- 2013-04-22 21:01:41下载
- 积分:1
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osu_svm3.0
这是一款非常优秀的matlab编写的支持向量机程序,对分类效果非常好。(This is a very good prepared matlab support vector machine procedures, the classification results very good.)
- 2008-02-22 15:11:10下载
- 积分:1
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dBmtoV
功率与电压的转换..............(the transfer between power and voltage)
- 2011-11-15 19:52:58下载
- 积分:1
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wavelet-ideal-filter
小波域理想濾波器,用了WACEREC2和RICE小波工具包兩種方法實現(wavelet ideal filter using waverec2 & rice wavelet toolbox)
- 2012-11-13 19:21:37下载
- 积分:1
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MM1-fangzhen
M/M/1排队系统仿真,包括时延分析,平均队长,排队时间等(M/M/1 queuing system simulation, including the delay analysis, the average captain, queuing time, etc.)
- 2020-12-26 09:09:03下载
- 积分:1