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数字信号matlab程序,是科学出版社编的书的上机作业(IT is matlab homework,it is ok,)

这是一个电力系统信号，其中频率为200和300.应用付立叶变换并求频谱图 (This is a power system signal, including frequency of 200 and 300 apply Fourier transform and spectrum requirements)

Resizing an Image in simulink blocks

合成地震记录是用声波测井或垂直地震剖面资料经过人工合成转换成的地震记录（地震道） 合成记录的制作是一个简化的一维正演的过程，合成记录F(t)是地震子波S(t)与反射系数R(t)褶积的结果。(Synthetic seismogram is sonic or vertical seismic profile data after conversion into synthetic seismograms (seismic trace) the production of synthetic seismogram is a simplified one-dimensional forward modeling process, synthetic seismogram F (t) is the seismic wavelet S (t) and the reflection coefficient R (t) the convolution results.)

TotalWES.m是主干程序，而DCoef和FCTforAW是里面调用的函数。TotalWES只要实现交错网格有限差分波场数值模拟，其中的FCTforAW是用来消除数值频散的。这些是实现弹性波波场模拟的程序，其它两个文件是实现声波波场模拟的程序(TotalWES.m is the backbone of the procedure, and DCoef and FCTforAW is inside a function call. As long as the realization of TotalWES staggered grid finite difference numerical simulation of wave field, which FCTforAW is used to eliminate the numerical dispersion. These are the realization of elastic wave field simulation procedures, the other two documents are to achieve the sound the ball field simulation procedures)

说明：  用牛顿下山法求解方程：下山因子在计算过程中可以变动，一般选择下山因子时从1开始，逐次将减半进行试算，直到能使下降条件成立为止。若当计算到某步时取不到满足要求的值（或值小到无法容忍），这时称“下山失败”，需要另取初值重新算起。(Descent method with Newton' s equation: down factor in the calculation process can change, usually selected from the 1 start down factor, will be halved for successive spreadsheet until the can down the conditions established. If when calculating the time to take a step not meet the requirements of the value (or values ??too small to tolerate), then the &quot down failed&quot , you need an alternative initial re-counting.)

烟花算法程序，人工智能算法，用于各种优化问题(Fireworks Algorithmic Program, Artificial Intelligence Algorithms, Used for Various Optimization Problems)

说明：  基于粗糙集属性约简的算法，不错，可以看看(Rough set attribute reduction algorithm, a good)

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)

TD-SCDMA收发系统建模，联合检测仿真(TD-SCDMA transceiver system modeling, simulation of joint detection)