两套ADTD闪电定位系统探测效率对比分析

Comparative analysis on detection efficiency of two ADTD lightning location systems

利用浙江省和宁波市两套ADTD闪电定位系统的闪电定位资料，对ADTD闪电定位系统的探测效率进行了分析，结果表明：宁波地区范围内，市系统所探测到的地闪次数要远超过省系统所探测到的地闪次数。在合理探测范围内，闪电定位系统的相邻测站间距越近，其探测效率越高，特别是对雷电流幅值在0～30kA的地闪。当雷电流幅值〉50kA，相对于市系统，测站数较多的省，系统能探测到较高比例的高质量地闪数据。相比测站围线以外，在测站围线以内，市系统探测效率高且探测到的高质量地闪数据比例也较高。

Using cloud-to-ground lightning data obtained from ADTD lightning location system of Zhejiang Province and Ningbo City, detection efficiency of ADTD lightning location system is analyzed. The results show that the number of flashes detected in Ningbo area is far more than the flashes detected in Zhejiang Province. In the reasonable range of detection, the closer the distance between the adjacent detection stations, the higher the detection efficiency, especially the lightning current magnitude from 0 to 30kA. When lightning current magnitude is greater than 50kA,the high proportion of high quality cloud-to-ground lightning data can be detected by the system. Compared with the outside station connection and in the range of station connection, the detection efficiency is high and the proportion of high quality cloud-to-ground lightning data is also relatively high.