When high temporal resolution image series are used to derive Cloud Motion Winds,1-D Fourier phase analysis technique computes sequentially the u and v components based on an assumption of 1-D displacement,ie solving one component provided that the other is zero.Errors will come into existence when this supposition is not true.In this article,the 2-D Fourier phase analysis technique is suggested,its theory is introduced,and a numerical simulation is performed to demonstrate its advantage over the 1-D technique.