卫星导风的二维傅立叶相位分析技术初步研究  

A Numerical Simulation Study on the 2-D Fourier Phase Analysis Technique for Cloud Motion Winds

作　　者：孙林[1] 王振会[1] 许建明[1] 

机构地区：[1]南京气象学院电子工程系,江苏南京210044

出　　处：《南京气象学院学报》2004年第2期210-217,共8页Journal of Nanjing Institute of Meteorology

基　　金：国家自然科学基金资助项目(40075005);教育部高等学校骨干教师资助项目

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。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.

关 键 词：云导风 傅立叶相位 误差 相关系数法 地球静止气象卫星 

分 类 号：P412.27[天文地球—大气科学及气象学]