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ISSN 1006-9895

CN 11-1768/O4

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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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


Beijing Lightning NETwork (BLNET): Configuration and Preliminary Results of Lightning Location
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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。

    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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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.大气科学,2015,39(3):571~582 WANG Yu, QIE Xiushu, WANG Dongfang, LIU Mingyuan, SU Debin, SHEN Yonghai, WU Zhijun, LIU Dongxia, SUN Zhuling. Beijing Lightning NETwork (BLNET): Configuration and Preliminary Results of Lightning Location. Chinese Journal of Atmospheric Sciences (in Chinese),2015,39(3):571~582

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  • 收稿日期:2014-03-08
  • 最后修改日期:2014-07-23
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  • 在线发布日期: 2015-05-13
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