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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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MeanShiftCluster
Mean Shift Clustering
- 2010-02-25 02:57:50下载
- 积分：1
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smoothing
语音信号中的平滑处理，很实用的程序哦，值得一看，谢谢查看。(speech smoothing)
- 2011-12-27 20:30:30下载
- 积分：1
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graysystem
在matlab中计算灰色关联度,可以计算农业经济，人文生态，环境，等等，用途广泛，方便使用。(gray system is good，many people liked it,it can calculate many things for agriculture,econmics and other things.so try to download it and use it.)
- 2010-11-22 11:19:34下载
- 积分：1
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fastica
说明： fastICA主要的迭代算法，是对信号做独立分离使用的。(fastICA arithmetic)
- 2010-04-29 11:26:49下载
- 积分：1
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disici
清音的对数幅度谱，短时过零率，平均能量，基音周期(Voiceless logarithmic amplitude spectrum, short-term zero crossing rate, average energy, pitch period)
- 2010-05-14 20:14:55下载
- 积分：1
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DownQuad
downquad function for wavelet processing
- 2013-05-08 01:19:08下载
- 积分：1
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voice-recording-and-display
this is a simple and comfort system for recording voice
- 2015-04-15 18:10:57下载
- 积分：1
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low-rank_subspace_clustering
低秩子空间聚类。来源是Favaro在CVPR11年发表的一篇论文。(Low rank subspace clustering. )
- 2016-09-27 09:51:41下载
- 积分：1
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dds
采用DSP Builder设计的DDS信号发生器(The DDS signal generator using DSP BUILDER design)
- 2015-04-22 15:08:41下载
- 积分：1
