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matlab
matlab
电力系统设计与分析 (matlab power system design and analysis)
- 2012-12-29 13:59:34下载
- 积分：1
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spectrum-estimation
功率谱估计是利用有限长的数据估计信号的功率谱，广泛应用于各个领域。功率谱估计主要分为经典谱估计与现代谱估计。常用的经典谱估计方法有周期图法，相关法，周期图的改进法，常用的现代谱估计方法有最大熵谱估计，AR模型，MA模型，ARMA模型。经典谱估计适用于长序列的信号，其主要缺陷是描述功率谱波动的数字特征方差性能差，频率分辨率低，现代谱估计适用于短序列的信号，旨在改善谱估计的分辨率，并将其应用于实际地震资料的谱分析。
(Power spectrum estimation is the use of a finite length data to estimate the power spectrum of the signal, widely used in various fields. Power spectrum estimation is divided into classic and modern spectral estimation spectral estimation. Commonly used methods of classical periodogram spectrum estimation method, the relevant law, the cycle graph Improvement Act, commonly used in modern spectral estimation methods have maximum entropy spectral estimation, AR model, MA model, ARMA model. Classical spectral estimation applied to signal a long sequence, its main drawback is the fluctuation power spectrum describing digital signature variance performance is poor, the frequency resolution is low, modern spectral estimation applied to signal short sequences designed to improve spectral estimation resolution, and The analysis applied to real seismic data spectrum.)
- 2014-11-01 17:02:48下载
- 积分：1
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matlab_FEM_dismesh
DistMesh giving a singular FEM matrix?(Hi
Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D:
rho_1 < rho < rho_2
where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition.
Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used:
Circle with hole
rABC=1.5
rCyl=0.5
fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl)
fd=inline(fdstring, p )
box=[-2,-2 2,2]
[p,N]=distmesh2d(fd,@huniform,0.04,box,[])
I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)
- 2010-06-05 09:17:55下载
- 积分：1
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netcdf_api
matlab 要netcdf格式的数据操作，必须安装此插件，里面有详细的安装信息(matlab data to netcdf format operation, you must install this plug-in, which has detailed installation information)
- 2010-05-21 17:06:39下载
- 积分：1
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CG
说明： 数值分析中没经预处理的高斯方法、经SSOR预处理的高斯方法、经多项式预处理的高斯方法matlab程序(Numerical analysis did not pretreated Gauss method, the SSOR pre-Gaussian method, the pre-Gaussian polynomial method matlab program)
- 2011-08-24 21:50:44下载
- 积分：1
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md
说明： 波达角检测中的基于矩阵分解的高分辨测向算法(Angle of arrival detection based on matrix decomposition algorithm for high-resolution direction finding)
- 2011-11-02 08:54:29下载
- 积分：1
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ooDACE-1.4
说明： 克里金模型的MATLAB工具箱，克里金模型是比较流行的空间插值算法(MATLAB Toolbox for Kriging Model)
- 2019-03-30 16:22:48下载
- 积分：1
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3G_WLAN
关于3G与WLAN网络融合的安全性分析及形式化方法的应用(3G and WLAN networks on the integration of security analysis and the application of formal methods)
- 2010-07-16 15:14:48下载
- 积分：1
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cdma11112
cdma code for wireless communication
- 2010-05-18 14:44:44下载
- 积分：1
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snake
使用matlab对矩阵中的元素进行蛇形访问，并依次存放到新的向量里面(snake-like access to the elements of the matrix by MATLAB, and sequentially stored into the new vector)
- 2014-12-09 18:45:06下载
- 积分：1
