说明：  压缩感知中基于m序列的测量矩阵的构成，代码在matlab上进行了仿真，效果好于传统高斯矩阵。代码有详细注释，易懂
(This codes described measurement matrix based on m sequences in Compressed sensing. It has good result in matlab environment and the effect is better than the traditional Gaussian matrix. Code has detailed notes, so ti is easy to understand.)