| 基于声光信号的单站式闪电三维通道定位系统 |
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| 引用本文： | 张传亮,孙学金,卫克晶,张日伟,颜万祥,李浩然.基于声光信号的单站式闪电三维通道定位系统[J].气象科学,2016,36(4):502-509. |
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| 作者姓名： | 张传亮 孙学金 卫克晶 张日伟 颜万祥 李浩然 |
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| 作者单位： | 解放军理工大学 气象海洋学院, 南京 211101,解放军理工大学 气象海洋学院, 南京 211101,解放军理工大学 气象海洋学院, 南京 211101,解放军理工大学 气象海洋学院, 南京 211101,解放军理工大学 气象海洋学院, 南京 211101,解放军理工大学 气象海洋学院, 南京 211101 |
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| 基金项目： | 国家自然科学基金资助项目（41575020） |
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| 摘 要： | 目前基于雷声的三维定位系统多停留在实验阶段,从业务化运行的角度考虑,改进了单站式闪电三维定位系统的麦克风阵列,设计了定位算法,利用该系统采集了2014年夏季南京地区的部分闪电数据,并从计算耗时的角度对三维通道实时定位的可行性进行了研究。结果表明,基于声光信号的单站式闪电三维通道定位系统可重构闪电的三维通道;对连续的雷声信号进行分帧,帧长取0.03 s时,声源定位点可描绘出清晰的闪电主通道;采用分组保存和处理闪电声光信号的方法,可实现实时定位,当一组数据的保存时间为50 s时,计算耗时为46.507 s。
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| 关 键 词： | 闪电 三维通道 声光信号 互功率谱 实时定位 |
| 收稿时间： | 2/3/2015 12:00:00 AM |
| 修稿时间： | 2015/5/18 0:00:00 |
Three-dimensional lightning channel positioning system of single station based on acoustic and optical signals |
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| ZHANG Chuanliang,SUN Xuejin,WEI Kejing,ZHANG Riwei,YAN Wanxiang and LI Haoran.Three-dimensional lightning channel positioning system of single station based on acoustic and optical signals[J].Scientia Meteorologica Sinica,2016,36(4):502-509. |
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| Authors: | ZHANG Chuanliang SUN Xuejin WEI Kejing ZHANG Riwei YAN Wanxiang and LI Haoran |
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| Institution: | College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China,College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China,College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China,College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China,College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China and College of Meteorology and Oceanography, PLA University of Science and Technology, Nanjing 211101, China |
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| Abstract: | Considering business needs, an improved microphone array structure of three-dimensional lightning channel of single station and its related algorithms are presented in this paper. The system was used to collect part of the lightning data in Nanjing in the summer of 2014, and then the feasibility of real-time positioning of the three-dimensional lightning channel is studies from a time-consuming opearation viewpoint operation is studied. Results show that the three-dimensional lightning channel positioning system of single-station based on acoustic and optical signals can reconstruct the channel of lightning; when the continuous signal turns into frames and the frame length is set to 0.03 s, the sound positioning point can depict the main channel of lightning clearly; storage and processing of the grouping data of thunder and flash signals can achieve real-time positioning, when the time length of preservation is 50 s, and the time-consuming of computer is 46.507 s. |
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| Keywords: | Lightning Three-dimensional lightning channel Acoustic and optical signals Cross power spectrum Real-time positioning |
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