【摘要】 给出2-D傅立叶导风技术的理论推导,并运用数值模拟进行验证。介绍了示踪云的2-D频域波谱分析技术,由谐波的相位变化一次计算出波速的两个分量,期望能避免一维导风方法因一维平移假设所引起的误差。更多还原

【Abstract】 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.更多还原