A New Approach of 3D Lightning Location Based on Pearson Correlation Combined with Empirical Mode Decomposition

To improve the accuracy of pulse matching and mapping quality lightning discharges, Pearson correlation method combined with empirical mode decomposition (EMD) is introduced for discharge electric field matching. This paper uses new to locate channels an intra-cloud (IC) flash a cloud-to-ground (CG) analyzes location results two flashes. The show that this has good performance in location. Compared pulse-peak feature method, positioning are significantly improved, which mainly due much larger number points (matched pulses). located radiation sources increased by nearly factor seven, can continuity channel clearly distinguish developmental characteristics. In CG flash, there were three negative recoil streamers positive leader channel. After finished, taking approximately 1 ms, 12 2 respectively, underwent K-process. not connected K-processes We think may have triggered K-processes, respectively.