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基于红外卫星云图的台风中心自动定位方法研究
投稿时间:2009-10-30  最后修改时间:2009-11-13  点此下载全文
引用本文:李妍.基于红外卫星云图的台风中心自动定位方法研究[J].红外,2010,31(3):11~14
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作者单位E-mail
李妍 解放军理工大学气象学院 lgdxcx_ly@yahoo.com.cn 
基金项目:国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:台风中心定位一般依靠气象专业人员采用人工手动方式进行,自动化程度不高,效率低。本文利用 单幅红外台风云图,根据台风运动特征以及天气学诊断原理,建立了基于红外卫星云图的云运动矢量主方向提取方法;在此基础上,根据台 风密闭云区近似为圆的几何形状,构建了以圆的几何特性为约束的台风中心自动定位最优目标函数,求得了解析解,实现了有眼和无眼台 风的自动定位。用这种方法对2005年“海棠”台风多个时次的红外卫星云图进行了台风中心自动定位仿真。该方法的定位精度较高,可作 为台风中心自动定位的良好技术手段。
中文关键词:红外卫星云图  台风中心  自动定位  最优目标函数
 
Study of Automatic Location of Typhoon Center Based on IR Satellite Cloud Images
Abstract:The typhoon center is usually located manually by meteorologists. This location method has a low degree of automation. According to the movement characteristics of typhoon and the meteorological analysis theory, a single infrared satellite cloud image is used to establish a method for extracting the dominant cloud movement vectors. On this basis, the optimal target function for locating the typhoon center automatically is set and resolved. The automatical location of the typhoon with an eye or without an eye is realized. The method is used to simulate the automatical location of the center of typhoon ``HAITANG' in several cloud images obtained in 2005. The result shows that this method has a high location accuracy and can be used as a good technical means for the automatical location of typhoon center.
keywords:IR satellite cloud images  typhoon center  automatical location  optimal target function
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