Investigation of Zero Crossing Detection for First Return Stroke in Negative Cloud-to-Ground Lightning Flash

Abstract

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.

An analysis of manual and autoanalysis for submicrosecond parameters in the typical first lightning return stroke

“…In addition, MDF can be employed when two or more sensors simultaneously intercept can calculate the time, latitude and longitude of a flash event. Two or more three-axis magnetic field sensors are required to determine the altitude for a lightning event [39], [40]. Each sensor needs to have three orthogonal loop antennas to calculate the altitude and the capability to measure the azimuth and elevation angles of a reported lightning event [38].…”

“…Thirdly, an optical imaging is a satellite-based lightning detection technology that uses the radiation emitted by clouds to geolocate photographs captured from space [39], [42]- [45]. The cloud top could measure cloud-to-ground and intracloud lightning flashes [46], [47].…”

“…This study is aimed to discover the reliability of the autoanalysis programming for determining the lightning parameters: (i) duration of the zerocrossing and (ii) the duration of the rising time. This study is a modification of previous work by [24], [39] Indonesian J Elec Eng & Comp Sci ISSN: 2502-4752  An analysis of manual and autoanalysis for submicrosecond parameters in… (Muhammad Akmal Bahari)…”