摘要
在台风组网产品生成系统的基础上,根据台风监测预警的实际情况,开发台风雷达三维组网产品显示系统。该显示系统兼顾实时处理和历史数据分析的需求,实现了台风三维组网产品的实时监测、动画显示、风场叠加等多种功能,并运用切面插值算法、台风非对称性方向识别算法实现了最大对称轴和非对称轴的自动定位及其切面显示、台风不同距离的平均RHI切面显示。介绍显示方法、相关算法和主要功能模块,并使用"黑格比"台风作为实例,结合图像分析台风的非对称性和移动路径、强回波区、螺旋雨带的对应关系,取得良好的应用效果。
The three-dimensional structure and change of a typhoon in the landing period have close relationship with the its path and intensity.Using the CINRAD 3D mosaic typhoon products to analyze in real-time the three-dimensional structure of the typhoon is important to typhoon nowcasting and warning.According to the actual situation of typhoon monitoring and warning,a CINRAD 3D mosaic product display system for typhoon is developed,on the basis of the CINRAD 3D mosaic product production system for typhoon.Taking into account the demand of real-time processing and post-analysis,the real-time monitoring,the animated display of the typhoon and CINRAD 3D mosaic products,the superposition of wind and other functions are realized.Using the section interpolation algorithm and the identification algorithm of non-symmetric direction of typhoons,the automatic positioning and display section of the largest symmetry axis,non-symmetric axis and the average RHI section at different distances of the typhoon are achieved.The display method,the related algorithms,and the main functional modules of the system are described.By using Typhoon HAGUPIT as an example,analyzed are the asymmetry and movement of the typhoon path and the correspondence between the strong echo areas and spiral rain-bands with the images of Typhoon HAGUPIT.The application indicates that the product display system achieved satisfactory results.
出处
《气象科技》
2012年第2期145-152,共8页
Meteorological Science and Technology
基金
中国博士后科学基金项目(20080431114)
灾害天气国家重点实验室基金项目(2010LASW-A02)
南京信息工程大学校科研基金项目(20070113
20070032)资助
