中文说明：压缩感知，又称压缩采样，压缩传感。它作为一个新的采样理论，它通过开发信号的稀疏特性，在远小于Nyquist 采样率的条件下，用随机采样获取信号的离散样本，然后通过非线性重建算法完美的重建信号。它的关键就是信号重建算法，这里提供了自己编写的贪婪算法OMP，matlab程序，包括测试程序在内。
English Description：
Compressed sensing, also known as compressed sampling, compressed sensing. As a new sampling theory, it uses random sampling to obtain discrete samples of the signal by exploiting the sparse characteristics of the signal, which is far less than the Nyquist sampling rate, and then uses the nonlinear reconstruction algorithm to reconstruct the signal perfectly. Its key is the signal reconstruction algorithm, here we provide our own greedy algorithm OMP, matlab program, including the test program.