Acoustic-Based Real Time Reconstruction of Lightning Discharge Channel by DSP Paralell Procssing

Abstract

This paper presents the application of multi-DSP system, consisting of a personal computer with four DSPs (digital signal processor) for real time reconstruction of lightning discharge channel. Acoustic-based reconstruction of lightning discharge channel has been performed by using three-microphone system while performing the triggered lightning experiment by rocket. Using the DSP system, speedy numerical analysis of the channel including display on CRT was realized within fifteen seconds by parallel processing of the four DSPs. Algorithm of the parallel processing, automatical elimination scheme of erroneous estimated points and the estimation of processing time were discussed.