说明：  一个简单的运用正交匹配追踪算法（OMP）的程序，与Signal Recovery From Random Measurments Via Orthogonal Matching Pursuit中描述的OMP算法一致，可以使刚开始接触压缩传感（CS）的同学更快的入门，了解OMP算法
(A simple algorithm using orthogonal matching pursuit (OMP) of the program, and Signal Recovery From Random Measurments Via Orthogonal Matching Pursuit OMP algorithm described in the same, can make the first contact with compressed sensing (CS) students faster entry, understand the OMP algorithm)