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反正是好东西就是了，没有说明和注释，大家自己看看就是了。-because it is a good thing because it wants to, without notes and notes, we all look at the grindstone.

说明：  Monitor the air quality in the indoor pool

寻找卫星的程序,可以设置不同的城市,程序快速计算卫星的仰角和方位角,还有最重要的偏移角(Find satellite program, you can set a different city, the program quickly calculate the satellite elevation and azimuth, as well as the most important offset angle)

说明：  2DPCA是一个图像特征提取的算法。本代码中使用的分类器是最近邻分类器，最后得到的是一个图片识别率与特征矩阵维数的散点图，符合论文《Two-Dimensional PCA: A New Approach to Appearance-BasedFace Representation and Recognition》的预期结果。(2DPCA is an algorithm for image feature extraction. The classifier used in this code is nearest neighbor classifier, and the final result is a scatter diagram of image recognition rate and feature matrix dimensions, which conforms to the expected results of "Two-dimensional PCA: A New Approach to Appearance-BasedFace Representation and Recognition".)

大家在做项目时有可能会对图片做一些缓存，手写一个图片处理可以三级缓存(Handwriting a picture processing can be three - level cache)

自己编的，logistic和tent映射，性能分析对比(Self-edited, logistic and tent mapping, performance analysis comparison)

基于sellmeier方程产生的折射率，可通过改变材料的sellmeier系数，来计算材料的折射率。(Based on the refractive index generated by the sellmeier equation, the refractive index of the material can be calculated by changing the sellmeier coefficient of the material)

esp8266 cp2102 驱动程序只适用于ESP-12E(The esp8266 CP2102 driver is only applicable to ESP-12E)

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无线电测向信号处理算法，西电的硕士论文。(Radio direction finder signal processing algorithms, the West)