中文说明：压缩感知里面的稀疏重建问题，在原来MP的算法的基础上，提出了分块的思想，即将原子库分块后，测试算法的性能。
English Description：
For the sparse reconstruction problem in compressed sensing, based on the original MP algorithm, the idea of block is proposed, that is, after the atomic library is partitioned, the performance of the algorithm is tested.