已有的相位解包裹算法都只是对真实相位进行求取而忽略了相位包裹数k值存在的意义。基于最小二乘解包裹算法提出对k值直接求取的算法，从而对解包裹更能准确地求出真实相位。在此基础上，提出新的解包裹方法，不仅提高了解包裹的精度，而且减少了解包裹的时间，加快了运行速度，并通过程序验证了该算法的可行性。为高精度、大计算量的解包裹提供了新的参考方法。

Among all the present phase unwrapping algorithms, the main idea is to get the real phase directly. However, the meaning of phase unwrapping coefficient k is rarely taken into account. A new algorithm to gain directly the value of k based on least-square (LS) phase unwrapping algorithm is proposed. It can unwrap the phase more rapidly and accurately. On this basis, a new phase unwrapping method is put forward. It not only improves the accuracy of phase unwrapping, but also reduces the time of phase unwrapping and accelerates the running speed of the program. Experiments show that the algorithm is feasible. It provides a new way for large amount of calculation in phase unwrapping with high speed and precision.