说明：  该论文是华南理工大,赣南师范学院，中国科学院空间科学与应用研究中心一起编写的关于压缩感知理论的初步知识，供初学者参考
(South China University of the paper is large, Gannan Normal University, Chinese Academy of Space Science and Applied Research Center, prepared by the preliminary knowledge of the theory of compressed sensing for advanced users)