NA-Proj

合成地震记录，MATALB程序，包括合成记录，求反子波，反滤波，求反射系数(Synthetic seismograms, MATALB procedures, including synthetic records, seeking anti-sub-wave, anti filter, find the reflection coefficient)

decomprsioun experiment conducted in matlab as nessecessary where have it can be

This gives BER vs SNR for BPSK theoretical and Simulation

和Huffman-Tree一样，Shannon-Fano coding也是用一棵二叉树对字符进行编码。但在实际操作中呢，Shannon-Fano却没有大用处，这是由于它与Huffman coding相比，编码效率较低的结果（或者说香农-范诺算法的编码平均码字较大）。(And Huffman-Tree, like, Shannon-Fano coding is using a binary character coding. However, in practice it, Shannon-Fano, but not much use, since it is compared with the Huffman coding, coding efficiency is the result of a lower (or Shannon- Fano coding algorithm larger average code word).)

Kohonen的SOM软件包，matlab里最好的som软件(Kohonen s SOM package, matlab best som software)

插值法求出阶跃响应的Ts，Tr，deta，性能指标。方法准确，简单(interpolation step response is calculated by the Ts, Tr, deta, performance indicators. The method is accurate and simple)

This example uses some advanced features of the toolbox. The data is made of two batches and some of the unknowns are local to the batches.

对常用的MATLAB程序函数进行了归纳总结，简单易查，使用方便。(MATLAB program commonly used functions are summarized, simple and easy to search, easy to use.)

说明：  程序使用说明： 1、软件应用平台：Matlab6.5或更高； 2、打开方法： 将文件所在目录设为工作目录，然后打开wavlet.fig,在noise提示框下输入噪声强度，在0-0.1之间（不能为零）。 然后点process按钮，就会显示实验结果，包括原图像，加噪图像，去噪图像的对比以及当前的psnr值。 wavlet.m是程序文件。 程序内容写在在程序的注释里。 阈值的更改没有实现可视化，在源程序中可以改。(Procedure for use: 1, Software Platform: Matlab6.5 or higher 2, open the way: the file directory set the working directory, then open the wavlet.fig, the noise boxes, enter the noise level, in the 0-0.1 between (not zero). Then process the button, it will show the experimental results, including the original image, noise image denoising image contrast and the current psnr value. wavlet.m is the program file. Program content in the program notes written inside. Threshold changes are not visualized in the source program can be changed.)

里面有些常用的数值程序，如线性方程组的求解，插值，常微分方程的数值方法等等。(Inside some common numerical procedures, such as linear equations, interpolation, ordinary differential equations, numerical methods and so on.)