plot_img：画图子函数 CSA：CS算法m文件 NFA：窄聚焦算法m文件 PDA：RD算法m文件 RMA：距离迁移算法m文件-plot_img: Drawing Functions CSA: CS algorithm m file NFA: narrow focus algorithm m file PDA: RD algorithm m file RMA: distance migration algorithm m file

Including single sideband, double sideband, suppressed carrier and quadruple, STM32 all the information produced by the MP3, matlab implements five gray correlation degree computing model.