基于正态分布拟合与检验的闪电定位资料控制

Lightning location data controlling based on normal distribution fitting and testing

选取福州地区2007—2012年闪电定位资料,使用Matlab对数正态分布拟合方法以及STATA的正态分布检验方法对数据进行质量控制,研究闪电定位数据误差修正方法。结果表明：利用Matlab对数正态分布拟合方法与STATA正态分布检验方法,可以定量找到闪电定位资料小幅值电流干扰区间,对于有效利用闪电定位资料有较好的参考价值。福州地区小幅值雷电流干扰区间为0~1 k A,剔除此区间资料后正闪拟合效果最佳。在使用福州地区闪电定位资料时可先将此区间小幅值闪电误差数据删除,该结论可为福州地区闪电定位数据修正提供参考。

The error correction method of lightning location data was studied through conducting the quality control on the lightning location data from 2007 to 2012 in Fuzhou with Matlab lognormal distribu- tion fitting method and STATA normal distribution test methods. Results showed that the interference range with small currents value of the lightning location data was quantitatively found by Matlab and STA- TA methods, which had a good reference effects on effective usage of the lightning location data. The best fitting result in Fuzhou is available if the 0-1 kA interference range is absent. Before using lightning ho- cation data of Fuzhou, the currents in this interval should be deleted. This conclusion help correct Fuzhou lightning location data.