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DOI | 10.1002/2017JD027520 |
Location Accuracy Evaluation of ToA-Based Lightning Location Systems Over Mountainous Terrain | |
Li, Dongshuai1,2; Rubinstein, Marcos3; Rachidi, Farhad4; Diendorfer, Gerhard5; Schulz, Wolfgang5; Lu, Gaopeng6,7 | |
2017-11-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:21 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Switzerland; Austria |
英文摘要 | In this paper, we analyze the location error of time of arrival (ToA)-based lightning location systems (LLSs) caused by propagation effects over mountainous terrain around the Santis tower located in the Swiss Alps. The study is based on a full-wave three-dimensional (3-D) finite difference time domain approach using the topographic map including the Santis tower and the nearby sensors belonging to LLSs. It is found that the vertical electric fields are strongly affected by the presence of the mountainous terrain and the finite ground conductivity and that the location error associated with the ToA technique depends strongly on the used onset time estimation technique. The evaluated location errors associated with amplitude thresholds of 10% and 20% and the time of the linear extrapolation of the tangent at maximum field derivative are found to be smallest (about 300 m or less). Finally, we assess the accuracy of two simplified methods (terrain envelope method and tight-terrain-fit method) to account for the location error due to propagation over mountainous terrain. These two methods might represent an efficient alternative to estimate the additional time delay due to propagation over a nonflat terrain by using available topographic data. In addition, a possible real-time location error compensation algorithm using the elongated propagation path method to improve the location error of the LLSs in mountainous regions is presented and discussed. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417195500027 |
WOS关键词 | ELECTROMAGNETIC-FIELDS ; ELECTRIC-FIELD ; PROPAGATION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33616 |
专题 | 气候变化 |
作者单位 | 1.Nanjing Univ Informat Sci & Technol, Climate Dynam Res Ctr, Nanjing, Jiangsu, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Earth Syst Modeling Ctr, Nanjing, Jiangsu, Peoples R China; 3.Inst Informat & Commun Technol, Yverdon, Switzerland; 4.Swiss Fed Inst Technol EPFL, Electromagnet Compatibil Lab, Lausanne, Switzerland; 5.OVE Serv GmbH, Dept ALDIS Austrian Lightning Detect & Informat S, Vienna, Austria; 6.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, Beijing, Peoples R China; 7.Nanjing Univ Informat Sci & Technol, Minist Educ, Key Lab Meteorol Disaster, Nanjing, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Li, Dongshuai,Rubinstein, Marcos,Rachidi, Farhad,et al. Location Accuracy Evaluation of ToA-Based Lightning Location Systems Over Mountainous Terrain[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(21). |
APA | Li, Dongshuai,Rubinstein, Marcos,Rachidi, Farhad,Diendorfer, Gerhard,Schulz, Wolfgang,&Lu, Gaopeng.(2017).Location Accuracy Evaluation of ToA-Based Lightning Location Systems Over Mountainous Terrain.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(21). |
MLA | Li, Dongshuai,et al."Location Accuracy Evaluation of ToA-Based Lightning Location Systems Over Mountainous Terrain".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.21(2017). |
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