cma

Floyd最短路算法的MATLAB程序 (Floyd shortest path algorithm of MATLAB program)

说明：  地球绕圆心的运动，对各位应该有启发地球绕圆心的运动(The Earth' s movement around the center of a circle, there should be instructive for you)

MATLAB频谱分析源代码，自己写的，配合原始数数据文件，超级详细 ，经测试可直接使用。 (MATLAB spectrum analysis of the source code, write your own, with the original number of data files, super detail, has been tested and can be used directly.)

解析PSD，通过搜集找到的c# 解析psd的源码 (analysis psd)

用C++实现了MATLAB中fftshift及triang函数功能，代码是实现此二功能的函数(With C++ Achieved in MATLAB function fftshift and triang function code is to achieve a function of these two functions)

可模拟能量检测 在任职无线网络中的频谱感知中有重要应用(Can simulate the energy detection in wireless networks in office, there are important applications of the spectrum sensing)

梯度下降法是最早最简单，也是最为常用的最优化方法。梯度下降法实现简单，当目标函数是凸函数时，梯度下降法的解是全局解。一般情况下，其解不保证是全局最优解，梯度下降法的速度也未必是最快的。梯度下降法的优化思想是用当前位置负梯度方向作为搜索方向，因为该方向为当前位置的最快下降方向，所以也被称为是”最速下降法“。最速下降法越接近目标值，步长越小，前进越慢。(The gradient descent method is the earliest and most simple and most commonly used optimization method. The gradient descent method is simple to realize. When the objective function is a convex function, the solution of the gradient descent method is a global solution. In general, the solution is not guaranteed to be the global optimal solution, and the gradient descent method is not necessarily the fastest. The optimization idea of gradient descent method is to use the current position negative gradient direction as the search direction, because the direction is the fastest descending direction of the current position, so it is also called the steepest descent method. The faster the slowest descent approach is closer to the target, the smaller the step, the slower the progress.)

由于地球的上空有76颗依星，所以依星可以定位到地球的任意一个地方，该程序主要完成地理位置的定位(Because there are 76 above the Earth s Iridium, Iridium so you can navigate to any place of the Earth, which is mainly geographic location)

高斯白噪声序列的产生-使用瑞利分布， C语言产生1000个点的高斯白噪声序列。(Gaussian white noise sequence to produce- produce 1000 using a Rayleigh distribution point Gaussian white noise sequence)

说明：  svm工具箱，应用于matlab平台，给出了C_SVC二类分类算法的历程(svm toolbox, used matlab platform, given C_SVC the course of second-class Classification Algorithm)