利用由GPS同步的11个VLF/VHF双频段闪电探测站点和2个闪电宽带干涉仪站点构成的三维闪电定位网络来实现闪电VLF/LF和VHF辐射信号的多站同步观测。基于浮动电平触发方式，连续分段获取闪电VLF/LF和VHF辐射脉冲波形。通过提取固定时间窗内脉冲峰值和时间，采用TOA定位技术，实现放电事件位置、通道发展特征的3D定位及放电类型识别；结合多谱勒天气雷达观测，获取一批比较完整的强对流天气过程三维闪电定位和雷达回波特征的资料集。通过分析闪电始发位置、初始通道发展、以及VHF 辐射源时空演变特征，研究利用VHF辐射源定位结果反演云内参与放电的电荷区分布特征的方法；结合天气雷达回波特征，综合分析不同类型、极性闪电（云闪、地闪、NBEs）发生频数、始发位置、VLF/LF和VHF辐射发生时间一致性、以及VHF辐射源高度演变等特征，深化对强对流天气过程中闪电活动特征及其放电机理的认识和理解。

A three-dimensional (3D) lightning location network, composed of 11 dual band VLF/VHF detection sites and 2 broadband interferometers - all synchronized by GPS, is used to observe the VLF/LF and VHF signals from lightning. A software-based floating threshold trigger system that avoids false or missing triggering is used to consecutively obtain VLF/LF and VHF radiative waveforms in relatively short period, which guarantees there is no deadtime between triggering and recording. Using the Time-of-Arrival (TOA) technique, the captured pulse peaks within pre-defined time windows enable us to determine the locations of lightning discharge events, the 3D mapping of channel development, and the discharge types. Combined with Doppler radar observations, those comprise a relatively complete datasets of severe weather systems. The initial occurrence, the initial channel development, and the temporal and spatial evolution of VHF radiative sources provide effective retrievals of charge distributions within clouds. Combining different characteristics (including occurrence origins, frequency, time-overlapping of occurring both VLF/LF and VHF radiation, heights of VHF sources, 3D discharge channel, and the corresponding radar echo evolutions) of different types of discharge, a comprehensive analysis of lightning activities and the discharge theories within deep convective system is reached.