| 北京闪电综合探测网(BLNET):网络构成与初步定位结果 |
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| 引用本文： | 王宇,郄秀书,王东方,刘明远,苏德斌,沈永海,武智君,刘冬霞,孙竹玲.北京闪电综合探测网(BLNET):网络构成与初步定位结果[J].大气科学,2015,39(3):571-582. |
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| 作者姓名： | 王宇 郄秀书 王东方 刘明远 苏德斌 沈永海 武智君 刘冬霞 孙竹玲 |
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| 作者单位： | 1.中国科学院大气物理研究所中层大气与全球环境探测重点实验室, 北京100029;中国科学院大学, 北京100049 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目2014CB441401, 中国科学院科研装备研制项目YZ201206, 国家自然科学基金重点项目40930949 |
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| 摘 要： | 北京闪电综合探测网(Beijing Lightning NETwork, 简称BLNET)由10个观测站组成, 每个子站主要由闪电快、慢电场变化测量仪(也称快、慢天线)和闪电甚高频(VHF)辐射探测仪构成, 实现了对闪电的多频段的综合观测。本文首先详细介绍了BLNET的网络构成, 然后利用蒙特卡罗法对网络的定位误差进行了理论分析, 模拟结果表明网络内部水平定位误差小于200 m, 网络外部100 km处水平定位误差小于3 km, 最后利用Chan氏算法和Levenberg-Marquardt算法相结合的方法, 对发生在2013年7月7日的一次雷暴过程分别进行了地闪和云闪定位, 将定位结果和对应时次的雷达回波进行比较, 发现地闪和云闪都出现在大于30 dBZ的雷达回波区, 表明了探测网络和定位方法的可靠性。
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| 关 键 词： | 北京闪电网 到达时间差 误差分析 闪电定位 |
| 收稿时间： | 3/8/2014 12:00:00 AM |
| 修稿时间： | 2014/7/23 0:00:00 |
Beijing Lightning NETwork (BLNET): Configuration and Preliminary Results of Lightning Location |
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| WANG Yu,QIE Xiushu,WANG Dongfang,LIU Mingyuan,SU Debin,SHEN Yonghai,WU Zhijun,LIU Dongxia and SUN Zhuling.Beijing Lightning NETwork (BLNET): Configuration and Preliminary Results of Lightning Location[J].Chinese Journal of Atmospheric Sciences,2015,39(3):571-582. |
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| Authors: | WANG Yu QIE Xiushu WANG Dongfang LIU Mingyuan SU Debin SHEN Yonghai WU Zhijun LIU Dongxia and SUN Zhuling |
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| Institution: | 1.Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029;University of Chinese Academy of Sciences, Beijing 1000492.Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 1000293.Meterological Observation Centre, Beijing Meteorological Bureau, Beijing 100081 |
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| Abstract: | The Beijing Lightning NETwork (BLNET) consisting of ten stations has recently been developed, with each station composed of a fast antenna, a slow antenna and a lightning VHF (Very High Frequency) radiation detection system, forming a lightning network with capability formulti-band integrated lightning observation, including VLF, LF, HF, and VHF frequency bands.In this paper, a detailed configuration of the infrastructure of BLNET is described, and atheoretical analysis of lightning location error using the Monte Carlo methodis presented. The simulation resultsshowed that the 2-D location error was less than 200 m within the network and 3 kmat the range of 100 km outside the network. Finally, using a combined method incorporating Chan and Levenberg-Marquardt algorithms, we located all the cloud-to-ground lightning and intra-cloud lightning that accompaniedthe thunderstorm which passed over the network on July 7, 2013. A comparison of the location results with the corresponding radar data showed good agreement, validating a high performance of the BLNET and the proposed location algorithm. |
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| Keywords: | Beijing Lightning NETwork Time difference of arrival Error analysis Lightning location |
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