| 深圳市闪电定位资料误差分析及其优化 |
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| 引用本文： | 曾庆锋,张其林,赖鑫,徐栋璞,王皓.深圳市闪电定位资料误差分析及其优化[J].气象科技,2015,43(3):530-536. |
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| 作者姓名： | 曾庆锋 张其林 赖鑫 徐栋璞 王皓 |
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| 作者单位： | 深圳市国家气候观象台，深圳南方强天气研究重点实验室， 深圳 518040,南京信息工程大学大气物理学院，南京 210044,深圳市国家气候观象台，深圳南方强天气研究重点实验室， 深圳 518040,深圳市气象服务中心，深圳 518040,成都信息工程大学电子工程学院，成都 610225 |
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| 基金项目： | 中国气象局华南区域气象中心科技攻关项目（GRMC2012M17）和成都信息工程大学科研基金（KYTZ201413,CRF201401）共同资助 |
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| 摘 要： | 利用场地误差优化模式对深圳地区的地闪定位资料进行优化处理。首先对深圳市闪电定位系统进行简单介绍,然后利用改进的传输线模式对真实地表环境下的闪电辐射电磁场进行计算,以分析深圳市闪电定位系统的场地误差,最后基于定位误差和场地误差模式对闪电定位数据进行定位误差订正。结果表明不同方位角上的不规则地形对继后回击电磁场波形具有不同影响,随着表征地形粗糙程度的高度均方根的增加,电场的峰值下降,波形的上升沿时间增加。同时,电场波形上升沿时间也会随着方位角的变化而变化,这可能会给时间到达法的定位带来一定误差。为了验证该算法的合理性,对该系统覆盖的区域进行了闪电定位数据优化精度的时空分布分析和评估。结果表明这种优化方案是可行的、可靠的,优化后的闪电定位精度明显提高。
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| 关 键 词： | 闪电定位系统 场地误差 误差分析 |
| 收稿时间： | 2014/5/27 0:00:00 |
| 修稿时间： | 2014/10/11 0:00:00 |
Error Analysis and Correction of Lightning Location Data in Shenzhen |
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| Zeng Qingfeng,Zhang Qilin,Lai Xin,Xu Dongpu and Wang Hao.Error Analysis and Correction of Lightning Location Data in Shenzhen[J].Meteorological Science and Technology,2015,43(3):530-536. |
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| Authors: | Zeng Qingfeng Zhang Qilin Lai Xin Xu Dongpu and Wang Hao |
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| Institution: | Zeng Qingfeng;Zhang Qilin;Lai Xin;Xu Dongpu;Wang Hao;Shenzhen National Climate Observatory,Shenzhen Key Laboratory of Severe Weather in South China;School of Atmospheric Physics,Nanjing University of Information Science & Technology;Shenzhen Meteorological Service Center;Electronic Engineering College,Chengdu University of Information Technology; |
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| Abstract: | Based on the site error optimization model, the lightning flash data in Shenzhen are analyzed and corrected. The lightning location system of Shenzhen is introduced, and the site errors of the lightning location system are analyzed, the lightning radiated electromagnetic field are calculated and analyzed with the improved transmission line model under real surface environment. Based on the site errors and site error model, the lightning flash data in Shenzhen are corrected. The results show that the irregular terrains with different azimuths have different effects on the electromagnetic waves of subsequent strokes. With the increasing root mean square of the height of irregular terrain, the peak value of electric field reduces and the waveform rise time increases. Meanwhile, the rise time of electric field waveform varies with the changes in azimuth, which may bring some errors in using the TOA (time of arrival) location method. To verify the reasonableness of the site error model, the optimization accuracy in the covered area of the lightning location system is also calculated and analyzed. It is found that this optimization method is feasible and reliable, and the location accuracy of the optimized lightning scheme is significantly improved. |
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| Keywords: | lightning location system site error error analysis |
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