slm_modified

本程序的功能是将模型结果直接输出到excel中的演示(The program s function is to generate the result of the model to demonstrate in excel)

EIA3和EEA3源代码，LTE协议里的祖冲之加解密算法和完整性保护算法。(EIA3&EEA3 source code)

采用巴特沃斯函数，构造低通滤波器，实现信号的低通滤波(lowpass filter)

用神经网络方法进行曲线拟合，可以进行对数字辨识(Using neural networks for curve fitting, can be identified on the digital)

说明：  一维正演，用于大地电磁测深，内有简单模型，打开即可营运(One dimensional forward modeling, used for magnetotelluric sounding, with a simple model in it, which can be opened for operation)

这是关于msk的调制解调的程序。用积分的方法进行调制 程序的最后还给出了误码率的计算。(This is on the MSK modulation and demodulation process. Integral approach to modulation the end of the process also gives the bit error rate calculations.)

一阶导数的常用差分逼近 求解df的差分逼近 flag标记使用的差分算法 算法来自周超红的《一阶导数的差分逼近汇总》 可按照里边的算法构造更高阶的差分逼近(First derivative of the common difference approximation approach for solving differential df flag tag algorithm using the difference method from the week of super-red " first derivative of the difference approximation of summary" can be constructed in accordance with the algorithms inside the differential approximation of higher order)

matlab function to calculate jacobian matrix fou a quadrilateral element

BP神经网络代码，使用LM算法（高斯牛顿法的改进，具有很好的鲁棒性）(BP neural network code, use the LM algorithm (modified Gauss-Newton method has good robustness))

说明：  短时傅里叶变换的MATLAB程序，保证时、频分辨率，有算例(Short time Fourier transform matlab program to ensure time and frequency resolution, and with calculation examples)