fushi

DiffractionGratingNew

设计巴特沃斯和切比雪夫滤波器，实现低通滤波，并计算滤波系数，给出效果图(Design a 20-order Butterworth filter, low-pass filter, and the filter coefficient calculation gives renderings)

输入信号五个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，得到识别出的信号类别，本例为2PSK, 4PSK, GMSK, OQPSK, pi/4DQSK中的一个，还可以看Art网络的扩展性。(input signal instantaneous information on five characteristics : In the center is one of the instantaneous rate of the power spectral density of the maximum, is a center to the absolute value of the instantaneous rate of the standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component absolute standard deviation, Non-zero weak signal instantaneous phase of the nonlinear component standard deviation, In the center is one of the non-weak signal of the absolute value of the instantaneous frequency standard deviation, the identification of signal type, The cases of two PSK, 4PSK, GMSK, OQPSK, pi/4DQSK of one, Art can be viewed network scalability.)

背景建模 混合高斯模型 opencv代码和matlab代码(Background modeling Gaussian mixture model opencv code and matlab code)

说明：  极限学习机是一种神经网络仿真，比BP,SWM学习速度更快，参数设置更容易(Extreme Learning Machine is a kind of neural network simulation, compared with BP, SWM learning faster, easier to set parameters)

主要根据回声路径的改变来判断是否发生了双端通话，对研究算法的同学具有一定的参考价值。(A double-ended conversation about the detection of foreign literature, mainly based on changes in the echo path to determine whether there has been double-ended conversation, students study algorithm has a certain reference value.)

matlab基本算法之一，用ESPRIT方法估计波达方向，(Direction of arrival estimation using ESPRIT method)

HOG特征提取在进行SVM行人检测，经典算法(HOG feature extraction in SVM pedestrian detection, classical algorithm)

匹配追踪和正交匹配追踪，经典的灰度共生矩阵纹理计算方法，GSM中GMSK调制信号的产生。( Matching Pursuit and orthogonal matching pursuit, Classic GLCM texture calculation method, GSM is GMSK modulation signal generation.)

扩频通信条件下改变单音干扰的相位，仿真相位变化队伍码率的影响(Spread Spectrum Interference Rejection under the conditions of the phase change, simulation of phase change rate of teams)