fft_seq

说明：  本Matlab程序是《现代信号处理》中利用MUSIC算法进行的谐波恢复的仿真程序(The Matlab program is )

求解两幅压缩前后图片A和B之间的峰值信噪比(To find the PSNR (peak signal-to-noise ratio) between two intensity images A and B, each having values in the interval[0,1]. The answer is in decibels (dB).)

条带SAR程序，利用波数域方法进行成像，对于学习SAR有很大的帮助(Strip SAR program, using wave number field imaging methods for learning SAR has very great help)

说明：  一些关于瓦斯爆炸的论文，高温下Q345钢的材料性能试验研究，煤矿井下瓦斯爆炸的基本特性，瓦斯爆炸动力学特征参数的测定及其分析，瓦斯爆炸运动火焰生成压力波的数值模拟(Some papers on the gas explosion, Q345 steel under high temperature performance test of the material, coal mine gas explosion the basic characteristics of the gas explosion kinetics parameters determination and analysis of gas explosion generated pressure waves of flame motion simulation)

power electronics lab simulations

输入圆的半径求周长和面积。程序由三个函数组成：主函数进行输入输出和函数调用，perimeter函数求周长，area函数求面积。(Enter the radius of the circle circumference and area requirements. Program consists of three functions: the main input and output functions and function calls, perimeter function evaluation perimeter, area function for the area.)

二维声波正演程序！规则网格的时间空间二阶波动方程有限差分正演，matlab编写！！(Two-dimensional wave medling program! matlab prepared! ! Forward seismic acoustic source)

说明：  基于非负矩阵分解（NMF）的人脸特征提取算法，NMF基本思想是找到一个线性子空间W，使的构成子空间的基本图像的像素点都是正值，而且人脸图像在子空间上的投影系数也是正数(Non-negative Matrix Factorization (NMF) of facial feature extraction algorithm, NMF basic idea is to find a linear sub-space W, so that the composition of sub-space of the basic image pixels are positive, and face image in the sub-space projection coefficient is positive)

用C或者matlab编写基2 FFT快速算法，输入点数是2的幂次方，序列视作既包含实部也包含虚部。要求一个函数计可以做正变换，也可以做反变换。编写输入序列，先进行正反向变换，得到离散频谱，再将离散频谱加载到输入端进行验证，从输出端获取序列，和原来的序列进行比较，看看是否相等。序列可随意设为2的幂次项！(Written by C or matlab base 2 FFT fast algorithm, the input power of 2 points is the sequence includes both the real part as the imaginary part is also included. Require a meter to do is change the function, you can also do the inverse transform. The preparation of the input sequence, first the forward and reverse transformation, discrete spectrum, discrete spectrum and then loaded into the input validation, access to sequence from the output side, and the original sequences were compared to see if equal. Sequence can be arbitrarily set to a power of 2 items!)

一个详细的OFDM-UWB仿真程序，有很多模块和功能，比较适合详细了解原理后作仿真参考(A detailed simulation program OFDM-UWB, there are many modules and functions, more suitable after a detailed understanding of the principle of simulation of reference)