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Volterra
使用“改进的欧拉公式”和“4阶龙格-库塔公式”分别对Volterra方程求解，绘制解曲线、相轨线，并将结果进行比较。(Using the " improved Euler formula" and " 4-order Runge- Kutta formulas," respectively, Volterra equations, draw solution curves, phase trajectories, and the results were compared.)
- 2011-05-12 17:33:57下载
- 积分：1
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circ_Fourier.m
计算夫琅禾费圆孔函数傅里叶变换的脚本M文件(Calculation of the the Fraunhofer hole function Fourier transform script M-file)
- 2012-04-21 18:03:59下载
- 积分：1
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ACO
蚁群算法用于数据挖掘的matlab程序，编译(Ant colony algorithm for data mining matlab program, compile)
- 2012-05-08 10:02:52下载
- 积分：1
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Prospect_roughness2
新PROSPECT可模拟多色素信息叶片光谱特征(new PROSPECT can model multiple leaf pigment information spectra)
- 2014-08-18 17:37:39下载
- 积分：1
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DCTlicheng
研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散
余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的
K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角
阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这
反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特
性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。
虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。
(Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete
The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images
Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix
Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this
Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image
Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect.
Although from related to the performance of the sense, DCT is a kind o)
- 2013-11-25 16:00:24下载
- 积分：1
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DSP_mFILES
说明： 清华数字信号处理教材相关代码,供研究使用。(some code for digital signal processing.)
- 2010-03-31 14:04:42下载
- 积分：1
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upml_newyuanlaide
说明： FDTD方法，在MATLAB中模拟二维空间中点源振动所发出的波的传播(FDTD method for simulating two-dimensional space in the mid-point MATLAB source of vibration wave propagation given by)
- 2010-04-23 15:02:37下载
- 积分：1
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CDMA(matlab)
cdma的仿真，介绍了CDMA的各种仿真程序，包括信道的仿真，噪声的处理等。(cdma simulation, describes the various CDMA simulation program, including channel emulation, noise processing.)
- 2010-08-26 10:05:29下载
- 积分：1
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2dgaussian
汽车高斯曲面拟合
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2程序，以适应到表面二维高斯：
子= A *的进出口（ -（（西为X0）^2/2/sigmax^2 +（艺Y0的）^2/2/sigmay^ 2）。。）+ b的
这些例程是自动在某种意义上说，他们并不需要出发对模型参数的猜测规范。
autoGaussianSurfML（十一，彝，子）适合通过对模型参数的最大似然（最小二乘）。它首先计算了该模型在许多可能的参数值，然后选择最佳质量设置和细化与lsqcurvefit它。
autoGaussianSurfGS（十一，彝，紫）的估计，通过指定数据的贝叶斯生成模型，然后采取通过从模型吉布斯抽样样本后ofthis模型参数。这种(Auto Gaussian Surface fit
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2 routines to fit a 2D Gaussian to a surface:
zi = a*exp(-((xi-x0).^2/2/sigmax^2+ (yi-y0).^2/2/sigmay^2))+ b
The routines are automatic in the sense that they do not require the specification of starting guesses for the model parameters.
autoGaussianSurfML(xi,yi,zi) fits the model parameters through maximum likelihood(least-squares). It first evaluates the quality of the model at many possible values of the parameters then chooses the best set and refines it with lsqcurvefit.
autoGaussianSurfGS(xi,yi,zi) estimates the model parameters by specifying a Bayesian generative model for the data, then taking samples from the posterior ofthis model through Gibbs sampling. This method is insensitive to local minimain posterior and gives meaningful error bars (Bayesian confidence intervals))
- 2011-05-23 10:36:52下载
- 积分：1
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shiyan1_2
采用积分器方法在 SIMULINK 上建立微积分方程的模型
(Modeling methods using integral calculus equations on SIMULINK)
- 2015-02-14 23:09:27下载
- 积分：1
