系统仿真学报 ›› 2015, Vol. 27 ›› Issue (11): 2701-2713.

• 人工智能与仿真 • 上一篇    下一篇

强风暴结构特征的识别与可视辅助分析

许佳奕1, 黄旋旋2   

  1. 1.杭州电子科技大学计算机学院,杭州 310018;
    2.宁波市气象局,宁波 315012
  • 收稿日期:2014-08-15 修回日期:2014-09-16 出版日期:2015-11-08 发布日期:2020-08-05
  • 作者简介:许佳奕(1983-),女,浙江,博士,讲师,研究方向为计算机动画、实时绘制、GPU并行编程、纹理设计。
  • 基金资助:
    浙江省自然科学基金(Q12F020007); 浙江省教育厅科研项目(Y201121352); 国防基础科研重点项目(A3920110002)

Identification and Visual Analysis of Structure Characteristics of Severe Storm

Xu Jiayi1, Huang Xuanxuan2   

  1. 1. Department of Computer Science, Hangzhou Dianzi University, Hangzhou 310018, China;
    2. Ningbo Meteorology Bureau, Ningbo 315012, China
  • Received:2014-08-15 Revised:2014-09-16 Online:2015-11-08 Published:2020-08-05

摘要: 基于雷达气象理论和历史统计,提出一种能从雷达数据中自适应地分割出强风暴体内多类重要特征区域的算法。以逻辑分析策略识别对流系统内核点,搜寻连通区域完成风暴单体分割;分析连通对流区域中反射率强度和梯度分布的特点,自动地抽取强风暴体中4类特征区域的边界阈值;针对雷达数据特点改进传统的光线投射算法,其能够自动调节绘制参数,加强显示风暴体内部重要结构。实验结果表明:算法能准确而快速地识别出具有特征结构的区域边界,辅助气象预报员快速掌握强风暴的属性和发展状况,进而更有效的对灾害天气进行监测和预报。

关键词: 强风暴, 自适应识别, 结构特征, 体绘制

Abstract: A technique of adaptively extracting the feature regions from radar storm data was proposed based on the meteorological radar theory and historical statistics. A logical analysis strategy was proposed to identify convective cores, searched full convective regions to extract isolated storm cells. The changing of reflectivity data and corresponding gradient were analyzed to classify four typical structures. In order to accurately show the extracted spatial structures of storm cell, a parallel rendering framework was constructed by improving the ray-casting algorithm. Experiment results show that the proposed technique can quickly and accurately identify and visualize the spatial structure of sever storm, help forecaster to grasp the features and evolution of severe storm, and monitor and forecast disastrous weather effectively.

Key words: severe storm, adaptive identification, structure characteristic, volume rendering

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