DoubleSpectrum_Analysis

是几篇关于背景噪声的经典文章，从背景噪声的原理以及发展趋势讲解，很有用(it is useful for studying ambient noise)

用单纯形法求解线性规划 用完整单纯形法求解线性规划 用修正单纯形法求解线性规划 (Complete simplex method for solving linear programming using the simplex method for solving linear programming using the revised simplex method for solving linear programming)

直接扩频捕获Xfast算法仿真(包含可调SNR信息码产生)(dsss acquisition(XFAST))

一些货币政策DSGE模型用Matlab实现的程序合集(Monetary policy DSGE model using Matlab program collection)

运用小波变换进行人脸识别，能够圈出标记，人脸部分(failed to translate)

在一个移动通信系统中，发射信号是一个未调制的音频x(t)=cos(2πft)，其中f=f0+fi。设标称载波为f0=1GHz，并设fi =512Hz。假定移动用户在一个繁忙的高速公路上距离基站l公里处的地方，从开始从每小时60公里的速度开始，其速度（在0.01秒的时间间隔内测量）以1/2的概率随机的增加或减少1/10公里每小时。试仿真移动用户在这2s的时间间隔内所接收到的信号(及其频谱)。接收信号可以表示为： y(t)=a(t)Cos[2π(fo+f1)(t-△t)] 式中 △(t)=d(t)/c 且 a(t)=k/d2(t) 在上面的表达式中d(t)是在t时刻基站与移动用户的距离，c是光速，△(t)是传播延迟，而a(t)是信号在t时刻的衰减，并假设在这2s内a(t)是一个常数。利用复低通等效模型来进行仿真。(In a mobile communication system, the transmitted signal is an unmodulated audio x (t) = cos (2πft), where f = f0+ fi. Let nominal carrier of f0 = 1GHz, and set fi = 512Hz. Assume that mobile users on a busy motorway station l kilometers place, starting the beginning of 60 kilometers per hour, the speed (measured in 0.01 second interval) to increase the probability of a random 1/2 or reducing 1/10 km/h. Simulation test signal which the mobile subscriber in the 2s time intervals of the received (and its spectrum). The received signal can be expressed as: y (t) = a (t) Cos [2π (fo+ f1) (t- △ t)] Where △ (t) = d (t)/c And a (t) = k/d2 (t) In the above expression, d (t) at time t is a base station and a mobile user s distance, c is the speed of light, △ (t) is the propagation delay, and a (t) is the attenuation of the signal at time t, and assuming that 2s within a (t) is a constant. Using complex low-pass equivalent model for emulation.)

金属-电介质（Ag-LiF）微腔模式及透射光谱计算(Metal- dielectric (Ag-LiF) micro-cavity model and calculation of transmission spectra)

按照给定的差分格式编程实现求出数值解；结合格式的相容性和收敛性条件简单分析计算结果。(Numerical solution obtained in accordance with the given differential format programming combined format compatibility and convergence conditions simple analysis of the calculation results.)

本程序可用于计算电力系统可靠性指标ENS。不同于一般用平均负荷的方法，考虑了负荷的动态响应。(To calculate the reliability index of distribution system.)

最优波束形成的空时过程特性（包括快拍模型、空时随即过程、阵列和孔径的谱采样等）(Optimal beamforming space-time process characteristics (including the snapshot model, then space-time process, arrays and spectral sampling of the aperture, etc.))