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contoh
i don t know what exactly it was
- 2010-01-02 17:58:50下载
- 积分：1
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An-application
说明： 一种应用matlab进行光谱定标和随机数产生的源代码(An application for spectral calibration matlab and random number generator source code)
- 2011-03-07 16:38:43下载
- 积分：1
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aliasing
show an aliasing in sine wave by L. Braile
- 2013-02-24 16:11:35下载
- 积分：1
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K-meanCluster
How the K-mean Cluster work
Step 1. Begin with a decision the value of k = number of clusters
Step 2. Put any initial partition that classifies the data into k clusters. You may assign the training samples randomly, or systematically as the following:
Take the first k training sample as single-element clusters
Assign each of the remaining (N-k) training sample to the cluster with the nearest centroid. After each assignment, recomputed the centroid of the gaining cluster.
Step 3 . Take each sample in sequence and compute its distance from the centroid of each of the clusters. If a sample is not currently in the cluster with the closest centroid, switch this sample to that cluster and update the centroid of the cluster gaining the new sample and the cluster losing the sample.
Step 4 . Repeat step 3 until convergence is achieved, that is until a pass through the training sample causes no new assignments. (How the K-mean Cluster workStep 1. Begin with a decision the value of k = number of clusters Step 2. Put any initial partition that classifies the data into k clusters. You may assign the training samples randomly, or systematically as the following: Take the first k training sample as single-element clusters Assign each of the remaining (Nk) training sample to the cluster with the nearest centroid. After each assignment, recomputed the centroid of the gaining cluster. Step 3. Take each sample in sequence and compute its distance from the centroid of each of the clusters. If a sample is not currently in the cluster with the closest centroid, switch this sample to that cluster and update the centroid of the cluster gaining the new sample and the cluster losing the sample. Step 4. Repeat step 3 until convergence is achieved, that is until a pass through the training sample causes no new assignments.)
- 2007-11-15 01:49:03下载
- 积分：1
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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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coherent-and-noncoherent
说明： 进行回波积累，我们可以进行相参积累和非相参积累，怎么来实现，还有如何进行比较？(Accumulation of the echo, we can be coherent and non-coherent integration, how to achieve, and how to compare?)
- 2020-11-06 19:39:49下载
- 积分：1
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zz
说明： 中值滤波 将一幅图片先加载噪声 让后用中值滤波的方法去除(Median filter to add noise to an image after the first use median filter to remove)
- 2010-05-18 22:12:24下载
- 积分：1
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guangfu
光伏电池模型，参考西南交大硕士研究生学位论文搭建(Photovoltaic cell model, the reference of Southwest Jiaotong University Graduate Thesis structures)
- 2013-02-19 10:30:02下载
- 积分：1
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Fuzzy-control-on-induction-machine
the document describes speed control of induction motor using fuzzy logic.
- 2013-03-11 21:19:00下载
- 积分：1
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ica_z
本程序是独立成分分析算法的主程序，在该程序中，通过调用子程序的方式实现了独立成分分析。但本程序不含子程序。(This procedure is the main independent component analysis algorithm, in this program by calling the subroutine way to achieve an independent component analysis.)
- 2013-09-22 10:03:15下载
- 积分：1
