一次人工触发闪电事件的定位误差分析  

Analysis of Location Errors for One Artificially-Triggered Lightning

作　　者：陈绿文[1] 黄智慧[1] 禹继[2] 李斌[1] 黄国开[1] 

机构地区：[1]广东省防雷中心 [2]广州市气象局,广东广州510080

出　　处：《广东气象》2010年第1期15-17,21,共4页Guangdong Meteorology

基　　金：广东省科技计划项目"广东地闪参数时空分布特征分析与雷击风险预警系统研制"(2006B37202006);科技部公益性行业(气象)科研专项"珠三角城市群-海岸带复合体致灾雷电动力与物理化学特征及预警技术研究"(GYHY2007-6-14)联合资助

摘　　要：利用一次包含8次回击过程的人工触发闪电事件的近距离光电观测数据,分析了广东省气象闪电定位系统对其回击过程的定位结果。结果表明,回击过程探测效率约为75%(6/8),回击平均定位误差约为3768m。为了分析定位误差来源,通过对比分析的方法,逐次引入各探测子站原始记录重新进行定位计算,发现剔除误差较大的探测子站后,平均定位误差为2192m,比原来降低42%。The Lightning Location System （LLS） records of Guangdong meteorological department was analyzed comprehensively based on the close Optical - Electrical observation of one rocket - triggered lightning which contains 8 return strokes. The results show that the stroke detection efficiency was about 75% （6/8） , and the average spatial location error was about 3 768 meters. For determination of the location error source, computation was re - executed based on the step - by - step introduction of the primary records of sub - stations from LLS network. The comparative results show that the location errors could be reduced to about 2 192 meters,42% less than that of the original after excluding the abnormal measurement.

关 键 词：大气探测 人工引雷 探测效率 定位精度 误差分析 闪电定位系统 

分 类 号：P41[天文地球—大气科学及气象学]