alamouti

estimation of function dervicative using numerical and estimation of intergration using composite Simpson rule..example with matlab simulation

形态滤波，各种算法。可修改后实现各种组合。(morphological filtering, algorithms. Can be modified to achieve various combinations.)

已知门诊时间C[i,3] 求解病人住院时间,此算法虽然有一定的局限行，但是可以根据入院期望值计算出来大体的的入院时间；使用是，要把里面的数据进行处理（只改变输入值和u 数据个数定义值（一般取较大值即可））(Known patient time C [i, 3] to solve the patient length of stay, although this algorithm has some limitations line, but expectations can be calculated according to the general hospital of admission time use is necessary to process the data inside (only change the number of input values ​ ​ and u define the data value (whichever is greater value to the general)))

共振解调法诊断轴承损伤类故障的原理概述如下:当轴承某一元件表面出现局部损伤时，在受载运行过程中要撞击与之相互作用的其它元件表面，产生冲击脉冲力，由于冲击脉冲力的频带很宽，必然包含轴承外圈、传感器甚至附加的谐振器等的固有频率而激起这个测振系统的高频固有振动。根据实际情况可以选择某一高频固有振动作为研究对象，通过中心频率等于该固有频率的带通滤波器把该固有振动分离出来。然后进行包络解调，去除高频衰减振动的频率成分，得到只包含故障特征信息的低频包络信号，对这一包络信号进行频谱分析便可以容易地诊断出轴承的故障来。(The principle of resonance demodulation method in the diagnosis of bearing damage such failure overview is as follows: when the bearing surface of a local damage, in the process of loading operation to hit with other elements of the interaction of surface, impact pulse power, due to the impact pulse frequency band is very wide, inevitably contains the bearing outer ring, sensors and even additional resonator and stir up the natural frequency of the vibration system of the high frequency vibration mode.A high frequency vibration mode can be selected according to actual situation as the research object, through the center frequency is equal to the natural frequency of the bandpass filter to separate the natural vibration.Then envelope demodulation, frequency components to remove the high frequency vibration attenuation, get only includes fault feature information of low frequency envelope signal, the envelope signal spectrum analysis can be easily diagnosed bearing failure.)

此代码对于 OFDM 链路级仿真，其中包括 OFDM 调制、 解调、 瑞利衰落信道和 AWGN 信道下给出了一个简短的仿真平台。误码率比较也是包括在内的。

程序代码说明 P0502：计算图像中的欧拉数 (code P0502 Note : Images of calculation Euler number)

一种数字图像信息隐藏算法，包含MATLAB程序和文献，非常有帮助。(A digital image information hiding algorithm, including MATLAB procedures and documentation, very helpful.)

基于matlab Dijkstra算法的实现(matlab Dijkstra)

小波包分析提取振动信号中的特征频率，含噪脉冲信号进行相关检测,二维声子晶体FDTD方法计算禁带宽度的例子。( Wavelet packet analysis to extract vibration signal characteristic frequency, Noisy pulse correlation detection signal, Dimensional phononic crystals FDTD method calculation examples band gap.)

应用背景vlfeat开源库实现的流行的计算机视觉算法，专业的图像理解和局部特征提取和匹配。关键技术这些说明如何设置vlfeat MATLAB。我共享工具箱的压缩文件（也可以从源代码编译库和工具箱）。