中文摘要：

利用0．1μs时间分辨率的快天线电场变化仪、5000帖／s的高速摄像机等仪器设备所观测的资料，对发生在从化夏季人工引雷试验中一次连接过程另辟新径的触发闪电个例进行了分析。结果表明：下行直窜先导和上行连接先导在另辟新径的拐点处连接并产生回击，连接点位于风杆的斜上方8m处，上、下先导连接的速度估算约为40和780km／s，闪电F120605连接过程另辟新径产生的原因与原电离通道倾斜、风杆较高及回击电流强度较大有直接关系。连接后出现间隔约1ms的双回击电场，认为是由同一闪电间隔较短的两组先导一回击序列所产生，它的产生与连接过程另辟新径有很大的关系。

英文摘要：

In order to search the characteristics of new path to ground of attachment process , one artificially triggered lightning was analyzed using the data obtained by fast antenna with 0.1 s time resolution and high-speed camera with 5000 piece/s resolution in autumn experiments in CongHua area. By studying the attachment of the process, we can conclude that the return stroke begins at the attachment point 8 m ramp top position of the wind pole which is the inflexion of the new trail between the down ward dark leader and up-ward attachment leader, with velocity of 0.4 105 and 0.78 106 m/s, respectively. New path of attachment process of F120605 is directly related to lean channel, high wind pole ,and great current of return stroke. Two return-stroke waveforms separated in time by a millisecond or less are observed after the attatchment process. The results also show that double field can be caused by two leader return sequences following the same flash, may be preferably related to the new path of attachment process.