DigitalWidebandReceivers_second

说明：  给出了五对角方程组的Matlab求解编程，并且附有误差函数，实用性强(solve for Pentadiagonal equations using matlab language.)

循环位移函数，离散傅里叶函数必备工具之一。(Cyclic displacement function, discrete Fourier one of the tools necessary functions.)

这是一个计算近似熵的程序，后续开发可以通过控制维度m调节搜索最佳评价维度。(This is a program to calculate approximate entropy.you can control dimension to search the best uation dimensions for deeper study.)

matlab新手上手速成 其中包括了软件安装 操作 以及初体验的几个MATLAB ，可以帮助小白迅速摆脱只把matlab当作高级计算器的观念(Matlab novice to use express including several MATLAB software installation and operation experience and early, can help the mice rapidly from only the MATLAB as advanced calculator concept)

说明：  拟牛顿优化算法，用于无约束问题，matlab软件编程(Quasi-Newton optimization algorithm, used for unconstrained problems, MATLAB software programming)

最短路问题的D算法,供大家参考，谢谢，ps:j介绍要求的字好多(D-algorithm for the shortest path problem, for your reference, thank you, ps: j introduced the word required a lot of)

说明：  RGB空间图像到CuCb空间的转换，输入一个RGB图像，可以得到一个CuCb空间的图像！(RGB space image to CuCb space conversion, enter a RGB image, you can get a CuCb space images!)

一本很不错的书籍，里面有很多代码，都很好的，先进PID控制MATLAB仿真(MATLAB simulation of advanced PID control)

相控阵天线阵列的密度加权matlab程序代码。 运行gui.m文件 lmax.m和lmin.mLinear_func.m最后几行被调用，放在和Linear_func.m路径相同的文件夹下即可 运行后command window里第一条分割线上面是第一幅图的几个值，第二条分割线上面是第二幅图的几个值。其中，peak_first是数值最大的峰值，peak_second是数值第二大的峰值(第一旁瓣)，theta_var是与 peak_first最近的左右两个谷值横坐标的距离。 因为是找半峰值点的，因为都是小数，在数组里没有正好等于主瓣幅值一半的点，只有接近一半的点，所以要设定一个范围比如大0.05或小0.05都认为是半峰值，但是有的数组里0.05的范围还是太小，所以可能报错。(Phased array antenna array the density weighted matlab program code. The last few lines of the run gui.m the file lmax.m lmin.mLinear_func.m call, same placed Linear_func.m path folder above the dividing line of the command window to run the first picture the several values ​ ​ above the dividing line several values ​ ​ of the second image. Wherein, peak_first numerical maximum peak the peak_second is the the numerical second largest peak (first sidelobe), the theta_var is the abscissa and peak_first recent about two valley distance. To find half the peak point are decimal, the array does not just equal to main lobe amplitude half points, only nearly half points, so you want to set a range, such as 0.05 or 0.05 are considered semi-peak some array, but the range of 0.05 or too small, it may be an error.)

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