Investigation of zero crossing detection for first return stroke in negative cloud-to -ground lightning flash

• Main Authors: Abdul Rahman, Ahmad Idil, Bahari, Muhammad Akmal, Baharudin, Zikri Abadi
• Format: Article
• Language: English
• Published: Penerbit UTHM 2019
• Online Access: http://eprints.utem.edu.my/id/eprint/24294/2/4709-ARTICLE%20TEXT-18790-2-10-20191006%20IJIE.PDF; http://eprints.utem.edu.my/id/eprint/24294/; https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4709/2966; https://doi.org/10.30880/ijie.2019.11.03.31
• Institution: Universiti Teknikal Malaysia Melaka

This paper aims to investigate the minimum threshold for zero crossing detection of the first return stroke in negative cloud-to-ground lightning flashes. The uncertainty for a minimum threshold to be set into a programmed software for an automatic zero crossing detection motivated the author to overcome the problem. The software was built-in MATLAB. The development of the software considered the important parameter of lightning strike from the preliminary breakdown stages until the first return strokes. A single station measurement was setup in Ayer Keroh, Malacca. 41 samples of duration of the zero crossing time were recorded by using Lecoy HDO4024 with 5 MS/s. The results showed that the minimum threshold for zero crossing detection was 40µs with 82.9% accuracy. In conclusion, the minimum threshold of zero crossing detection of the first return stroke in negative cloud-to-ground was determined