论文

粤港澳闪电定位系统探测效率及精确度评估

  • 禹继 ,
  • 杨仲江 ,
  • 陈绿文 ,
  • 黄智慧
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  • 南京信息工程大学 气象灾害省部共建教育部重点实验室, 南京 210044;2. 广州市南沙区气象局, 广州 511458;3. 广东省防雷中心, 广州 510080

收稿日期: 2013-01-28

  网络出版日期: 2015-06-28

基金资助

国家自然科学基金项目(41175003); 江苏高校优势学科建设工程资助项目(PAPD); 广东省气象局科技项目(2013B19)

Evaluation of Detection Efficiency and Accuracy of Lightning Location System of Guangdong-Hongkong-Macau

  • YU Ji ,
  • YANG Zhongjiang ,
  • CHEN Lüwen ,
  • HUANG Zhihui
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  • Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science & Technology, Nanjing 210044, China;2. Nansha Meteorological Administration, Guangzhou 511458, China;3. Lightning Protection Center of Guangdong Province, Guangzhou 510080, China

Received date: 2013-01-28

  Online published: 2015-06-28

摘要

为客观评估粤港澳闪电定位系统性能参数, 将闪电定位资料与广州人工触发闪电试验及高建筑物自然闪电观测试验的观测结果进行了对比分析.结果表明, 2007-2011年期间对真实闪电事件的闪电探测效率和回击探测效率分别为74%和40%, 定位误差的算术平均值和几何平均值分别为2660 m和1500 m; 2012年闪电探测效率和回击探测效率分别为97%和90%, 定位误差的算术平均值和几何平均值分别为950 m和470 m.2008-2011年期间闪电定位系统的回击电流幅值约为真实值的0.7 倍, 而2012年约为真实值的4倍.总体上, 2012年粤港澳闪电定位系统探测子站大幅度增加后, 探测效率和定位精度均有明显提升, 但对回击电流幅值的估算呈现系统性偏大.

本文引用格式

禹继 , 杨仲江 , 陈绿文 , 黄智慧 . 粤港澳闪电定位系统探测效率及精确度评估[J]. 高原气象, 2015 , 34(3) : 863 -869 . DOI: 10.7522/j.issn.1000-0534.2013.00165

Abstract

Lightning location records were comprehensively compared with the high-resolution observation of triggered lightning and natural lightning in Guangzhou, to evaluate the performance characteristics of the Lightning Location System of Guangdong-Hongkong-Macau. The results show that the flash detection efficiency and stroke detection efficiency were about 74% and 40% respectively during 2007-2011, while 97% and 90% respectively in 2012. The arithmetic mean value and median value for location error was estimated to be about 2660 m and 1500 m during 2007-2011, while 950 m and 470 m respectively in 2012. Lightning Location System reported peak currents of triggered lightning records were about 30% lower than the truth during 20082012, while 300% higher in 2012. When the number of detection sub-station was significantly increased in 2012, the detection efficiency and location precision were found to be obviously improved, but the peak currents of return strokes were systematically overestimated.

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