说明：  虽然有关OMP算法的文献已经广泛存在，但是对其详尽的分析却不多。这是对ＯＭＰ算法的详尽分析，在数学意义上做出具体说明
(Although the literature has been widely OMP algorithm exists, but not many of its detailed analysis. This is a detailed analysis of OMP algorithm, in the mathematical sense to make specific instructions)