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A topological framework for real-time 3d weather radar data processing

International Journal of digital Earth 2022年第1期15卷 813-831页

作者： Mingyue Lu Zhangjian Chen Jin Wang Qian Zhang Zaiyang Ma Min Chen Yongning Wen Collaborative Innovation Center on Forecast and Evaluation of Meteorological disasters Nanjing University of Information Science & TechnologyNanjingPeople’s Republic of China School of Geography Science Nanjing University of Information Science & TechnologyNanjingPeople’s Republic of China Zhejiang Academy of Surveying and Mapping HangzhouPeople’s Republic of China School of Geomatics Science and Technology Nanjing Tech UniversityNanjingPeople's Republic of China Key Laboratory of Virtual Geographic Environment (Nanjing Normal University) Ministry of EducationNanjingPeople’s Republic of China School of Management Engineering Xi'an University of Finance and EconomicsXi'anPeople’s Republic of China

Real-time 3d weather radar data processing makes it possible to efficiently simulate meteorological processes in digital Earth and support the assessment of meteorological *** current real-time meteorological operation system can only deal with radar data within 2d space as a flat map and lacks supporting 3d ***,valuable 3d information imbedded in radar data cannot be completely presented to meteorological *** to the large amount of data and high complexity of radar data 3d operation,regular methods are not competent for supporting real-time 3d radar data processing and *** study aims to perform radar data 3d operations with high efficiency and instant speed to provide real-time 3d support for the meteorological *** this paper,a topological framework composed of basic inner topological objects is proposed along with the quadtree structure and LOd architecture,based on which 3d operations on radar data can be conducted in a split second and 3d information can be presented in real *** the applications of the proposed topological framework,two widely used 3d algorithms in the meteorological field are also implemented in this ***,a case study verifies the applicability and validity of the proposed topological framework.

关键词： Weather radar data 3d operations real-time topological framework

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