DTMB

Wavelet denoising For using this code need to use signal toolbox and general toolbox in your matlab In the first part of this assignment, we asked to obtain a (black-and-white) digital image of size 512 by 512 and then generate noisy image by adding a Gaussian noise but under the condition of having SNR=20dB by select the suitable value of variance for Gaussian noise formula. Second step is performing wavelet denoising using the hard thresholding (Use the db 6 for four levels) in the condition of finding the optimal thresholding value of T in terms of the SNR obtained. It means that, we should find the highest SNR value by finding the suitable value for threshold. Then we asked to do the same process but this time using soft thresholding. Finally for the last part of question one, we should compare the results of the obtained SNR with the recommendations of 3*sigma for the hard thresholding and 3/2*sigma for the soft thresholding.

本程序用于电力系统对称三相短路电流计算，由matlab语言实现。(This procedure for symmetrical three-phase power system short-circuit current calculation, by the matlab language.)

说明：  使用matlab仿真三维物点的透视投影成像(perspective projection )

MATLAB学习课件 MATLAB是矩阵实验室（Matrix Laboratory）的简称，是美国MathWorks公司出品的商业数学软件，用于算法开发、数据可视化、数据分析以及数值计算的高级技术计算语言和交互式环境，主要包括MATLAB和Simulink两大部分。(MATLAB is MATLAB Matrix Laboratory Learning Software (Matrix Laboratory) for short, is the United States MathWorks, produced a commercial mathematics software for algorithm development, data visualization, data analysis and numerical calculation of high-level technical computing language and interactive environment, MATLAB and Simulink includes two parts.)

镜像延拓和一种自适应波形匹配法处理EMD中的端点效应。boundary_matchwave。BOUNDARY_CONDITIONS_EMD。(Mirror extension and an adaptive waveform matching method to deal with the end effect in EMD.)

说明：  数字基带信号的波形和功率谱密度绘制 和二进制基带脉冲成形及眼图的绘制(Waveform and power spectral density of digital baseband signal and Binary baseband pulse shaping and eye drawing)

Matlab基本电路运算，只需要输入电路的基本信息如节点数，电源的电压。电流等即可得出电路所有的电量(Matlab basic circuit operation, and only need basic information such as the number of nodes of the input circuit, the power supply voltage. Current, etc. can draw all the power of the circuit)

外点罚函数法，用于求解非线性优化问题，适用于matlb程序(Outside the penalty function method for solving nonlinear optimization problems for matlb program)

说明：  his work proposes two novel optimization algorithms called Salp Swarm Algorithm (SSA) and Multiobjective Salp Swarm Algorithm (MSSA) for solving optimization problems with single and multiple objectives. The main inspiration of SSA and MSSA is the swarming behaviour of salps when navigating and foraging in oceans. These two algorithms are tested on several mathematical optimization functions to observe and confirm their effective behaviours in finding the optimal solutions for optimization problems.

说明：  MATLAB仿真的svpwm两相电机模型(MATLAB simulation of two-phase motor model svpwm)