FDTD-Maxwell_equations

此程序用C语言用哈夫曼编码法实现了对英文的压缩与解压缩，是C语言编程一个比较经典的例子(this program in C language with Huffman coding method to achieve the right English compression and decompression, the C programming language is a classic example)

对二维图片进行中心放大，能控制放大的倍数，采用最近邻法(enlarge pictures from the center of it，can control the index for enlargement)

Wigner-Ville 分布(简称 WVD)是典型的二次型变换，它定义为信号瞬时相关函数的傅立 叶变换。 由于在计算中不加窗操作，它避免了时域分辨率和频域分辨率之间的相互牵制。 已证明，对于单分量线性调频信号，WVD 的时频表示能量集中性最优。但也正因为不涉 及窗函数，在分析多分量信号时 WVD 会受到交叉项的干扰。(The Wigner-Ville distribution (WVD) is a typical quadratic transformation, which is defined as the Fourier of the instantaneous correlation function of a signal. Ye Bianhuan. Because of no window operation in the calculation, it avoids the mutual restraint between time domain resolution and frequency domain resolution. It has been proved that for the single component LFM signal, the WVD time frequency representation has the best energy concentration. But it is also because it does not involve. And window functions, when WVD is used to analyze multi-component signals, it will be interfered by cross terms.)

数字控制系统是一种以数字计算机为控制器去控制具有连续工作状态的被控对象的闭环控制系统。因此，数字控制系统包括工作于离散状态下的数字计算机和工作于连续状态下的被控对象两大部分。我的课题的数字部分（PID）仿真由相应的离散传函实现，运用数字PID对被控对象实行准确控制。通过调节比例（P）、积分（I）、微分（D），使对象的输出达到预期的效果。(Digital control system is a kind of digital computer for the controller to control a continuous state of the object and closed loop control system. Therefore, the digital control system, including work on the discrete state of the digital computer and work in a continuous state of the plant is two parts. My topic of digital section (PID) simulation by the realization of the corresponding discrete transfer function using the digital PID control of the plant is implemented accurately. By adjusting the ratio of (P), integral (I), differential (D), so that the output of the object to achieve the desired results.)

自适应滤波器设计的方法用于信号处理的具体应用。可以实现信号的自适应处理(Adaptive filter design method for the specific application of signal processing. Can realize the adaptive signal processing)

数值分析的MATLAB实现---拉格兰日差值(MATLAB implementation of numerical analysis)

for analysis transmitions

牛顿迭代算法，可以解决非线性优化问题，但是求出的是局部最优解，应用时应该注意(Newton iterative algorithm to solve nonlinear optimization problems, but find the local optimal solution, the application should be noted)

空间面板，直接和间接效应，LM检验,包括例子，代码等等。(The demo contains files to estimate all spatial econometric models based on an exact calculation of the Jacobian term in the log_likelihood function. Supporting files to print the results, to calculate (robust) LM-test statistics and to calculate direct and indirect effects are also included.)

利用simulink仿真预测控制在boost电路中的应用(Use simulink simulation model predictive control applications in the boost circuit)