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关于地震勘探中资料处理的一些基本编程，这里是关于射线追踪的一个小程序(Some basic programming on seismic exploration data processing, the purpose is to provide a good reference for everyone)

说明：  刘金琨《滑膜变结构控制matlab》滑模控制(huamokongzhihdhdhdhdhdhdhhdh)

This routine performes trellis quanization of input sequence and provides output which should be further arithmetically coded. The program can be used for research ot teaching purposes to study performance of vector quantization, in particlular code-based trellis (multidimensional lattice) quantization.

傅里叶变换的一个示例，傅里叶变换为matlab自带程序。(An example of the Fourier transform, Fourier transform matlab own procedures.)

本程序用于线性调频信号频率的测量，首先产生一加噪线性调频信号，再使用小波滤波去除噪声，最后使用希尔伯特变换法求信号的频率。(This procedure is used to measure the frequency of chirp signal, first generate a chirp signal with noise, and then use wavelet filtering to remove noise, and finally use the Hilbert transform method for the signal frequency.)

说明：  希尔伯特黄变换，经验模态分解，边际谱，超级全代码，可以出图可以自由更换信号(Hilbert Huang transform, empirical mode decomposition, marginal spectrum, super full code, mapping and free signal replacement)

能一次性产生多组随机数。如果有些数字不想产生可以动态地剔除。可以控制产生随机数的范围，个数。功能很强大，交互式！(Can produce a one-time multiple sets of random numbers. If some do not want to produce can be dynamically removed. can control to produce the range of random numbers, the number of Very powerful, interactive)

matlab program for adapting filter

说明：  用matlab实现的GSM TCH/FS系统在高斯信道、瑞利信道的性能仿真，其中用到了循环编码、卷积码、交织码等信道编码知识(Using matlab to achieve GSM TCH/FS system in the Gaussian channel, Rayleigh channel performance simulation, which uses a loop encoding, convolutional codes, interleaving codes channel coding knowledge)

产生宽带QPSK信号，并通过rrc滤波，用于检验发射通路的EVM等指标(Produce wideband QPSK signals, and by rrc filter, used to test the emission path of EVM and other indicators)