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卫星导风的二维傅立叶相位分析技术初步研究
引用本文:孙林,王振会,许建明.卫星导风的二维傅立叶相位分析技术初步研究[J].南京气象学院学报,2004,27(2):210-217.
作者姓名:孙林  王振会  许建明
作者单位:南京气象学院,电子工程系,江苏,南京,210044
基金项目: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。

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
文章编号:1000-2022(2004)02-0210-08

A Numerical Simulation Study on the 2-D Fourier Phase Analysis Technique for Cloud Motion Winds
SUN Lin,WANG Zhen-hui,XU Jian-ming.A Numerical Simulation Study on the 2-D Fourier Phase Analysis Technique for Cloud Motion Winds[J].Journal of Nanjing Institute of Meteorology,2004,27(2):210-217.
Authors:SUN Lin  WANG Zhen-hui  XU Jian-ming
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.
Keywords:cloud motion winds  Fourier phase analysis technique  errors
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