Gradient-Projection-for-Matlab

用matlab绘制线性调频信号的时域波形，同时对信号进行频谱分析，并考察采样频率以及信噪比对频谱分析的影响。(Matlab drawing with linear frequency modulation signal time-domain waveform, and spectral analysis of signals and the sampling frequency and signal to noise ratio study of the impact of spectrum analysis.)

排队买票，建立N个队列，可以通过熟人插队买票，(Queue ticket, the establishment of N queues, you can jump the queue by acquaintances ticket,)

说明：  三维双凹激光振荡，采用菲涅尔衍射和fox-li方法，得到两维幅度和相位输出。(Three-dimensional double-concave laser oscillation, using Fresnel diffraction and the method of fox-li, the two-dimensional amplitude and phase output.)

bibliothèque de la MAS

引入变异算子的PSO，希望对大家的学习研究有所帮助。(Mutation of the PSO, we hope to help the study of learning.)

用matlab画出α=0,0.5,1的余弦滚降系统的频谱，并画出各自对应的时域波形(Matlab draw α = 0,0.5, 1 cosine roll-offs system of spectrum, and draw their corresponding time domain waveform)

说明：  数学建模最短路径建模源代码,经过数学建模验证过的(Mathematical modeling of the shortest path modeling source code)

查找图像直方图波谷，用低通滤波方法去除毛刺，求导方法求峰值，可能有相位滞后(find the valley of a histogram)

FDTD仿真喇叭天线，能观察得到其电场在自由空间随时间的分布情况。(FDTD method is a time domain analysis.Here we first we design a wave-guide and there after we just increase its broad side.Our aim is to this simulation is plotting its electric field response with time and how will it response in outside free space. Here we just take 170 time steps one who can interested in antenna designing they can also plot the radiation pattern of this HORN antenna.Just take the field in the outside the mouth of HORN antenna and there do the simple formula to near filed far field transfer and measure it at your band of antenna.Best of LUCK all of you.)

巴特沃斯滤波器设置，自行设置阶数、截止频率等滤波器参数(butter-worth filter)