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This MATLAB code computes the covariance matrix of a random variable

说明：  管道运输问题 能够实现优化 从而帮助我们找到最短路径(Pipeline transportation problem can be optimized in order to help us find the shortest path)

一种基于模糊控制的PID算法，入门级别同学可以下载学习(Based on fuzzy PID control algorithm, the entry-level students can download learning)

这个算子算是图像历史上第一个特征点提取算法了，1977年提出的，很简单，拿来练手很合适。(This operator is the first feature point extraction algorithm in the history of the image. It was proposed in 1977. It is very simple and suitable for hand training.)

正弦信号的频谱图形，短小的编码程序，用matlab实现。可实现简单频谱图(Sinusoidal signal spectrum graphics, short of coding procedures, using matlab realize. Can realize a simple frequency spectrum)

通过Matlab编程，推导出所用矢量网络分析仪的十二项误差模型，并以Matlab 画图的形式给出。(By Matlab programming, twelve-term error model is derived by using a vector network analyzer, and is given in the form of drawing Matlab.)

对具有随机噪声的二阶系统的模型辨识及其被辨识系统的辨识结果(Second order with random noise on the system model and its identification system identification results are)

对混沌时间序列相空间重构C—C方法的三点不足，提出了一种基于改进的C-c方法的 确定曩优时延与嵌入窗的新算法．在关联积分计算过程中引入了权衡计算精度与速度的可调参数， 合理选择试参数，能在不严重损失估计精度的前提下，大大加快计算速度。在理论分析的基础上， 用所提出的算法对三种混沌序列进行相空间重构，仿真结果表明该算法对最优时延的选择更准确， 对最优嵌入窗的选取更可靠。(Of chaotic time series phase space reconstruction methods of C-C less than three points, a method based on an improved determination of former times Cc excellent window of time delay and embedding the new algorithm. Calculation of correlation integral in the process of introducing a trade-off accuracy and speed of the adjustable parameters, a reasonable choice of test parameters can be estimated without serious loss of accuracy under the premise of the calculation speed greatly accelerated. In the theoretical analysis, based on the algorithm used by the chaotic sequence of three phase-space reconstruction, simulation results show that the algorithm of the optimal choice of a more accurate time delay, the optimal embedding window for the selection of more reliable.)

双线性插值算法的实现(bilinear interpolation algorithm implementation)

polarPcolor是一个函数,旨在用极坐标表示伪彩色图,与径向网格允许数据的一个简单的演讲。它非常适合平面位置显示器(PPI)扫描雷达为例。我们的目标是提供信息的极坐标给定变量Z。(polarPcolor is a function that aims to represent a pseudocolor plot in polar coordinates, with a radial grid to allow an easy lecture of the data. It is well suited for Plan Position Indicator (PPI) scan for radar for example. The goal is to provide information about the polar coordinate of a given variable Z. )