Results 191 to 200 of about 1,886 (205)

Continuous broadband lightning VHF mapping array using MUSIC algorithm

Atmospheric Research, 2020
Abstract In order to improve the mapping quality of lightning discharge processes, a mapping approach by applying multiple signal classification (MUSIC) algorithm to direction-of-arrival (DOA) estimation of lightning very high frequency (VHF) radiation sources is proposed (MUSIC-VHF method) and validated.
Tao Wang, Lihua Shi, Shi Qiu, Zheng Sun, Yantao Duan   +4 more
openaire   +1 more source

Two Methods for Correcting Range-Dependent Limitations of Lightning Mapping Arrays

Journal of Atmospheric and Oceanic Technology, 2018
AbstractLightning Mapping Arrays (LMAs) detect very high frequency (VHF) radiation produced by lightning as it propagates; however, VHF source detection efficiency drops off rapidly with range from the centers of the arrays, which results in a maximum of source points over the center of the network for large datasets. Using data from nearly one billion
Stephanie A. Weiss, Donald R. MacGorman, Eric C. Bruning, Vanna C. Chmielewski   +3 more
openaire   +1 more source

High‐Speed Video and Lightning Mapping Array Observations of In‐Cloud Lightning Leaders and an M Component to Ground

Journal of Geophysical Research: Atmospheres, 2019
AbstractHigh‐speed video (46,000 frames per second) and lightning‐mapping‐array (LMA) data are correlated to determine three‐dimensional properties of in‐cloud lightning leaders (altitudes ranging from 2.78 to 3.81 km) observed in a rocket‐and‐wire triggered lightning flash. Three positive leaders were observed with speeds ranging from 6.1 × 104 to 1.0 
D. A. Kotovsky, M. A. Uman, R. A. Wilkes, D. M. Jordan   +3 more
openaire   +1 more source

Lightning ring signatures with the Meteosat Lightning Imager (MTG-LI) compared to the Lightning Mapping Array in northeastern Spain

Launched into geostationary orbit in December 2022, the first Meteosat Third Generation satellite contains the Lightning Imager, which started delivering data operationally since July 4th, 2024, monitoring lightning over Africa, Europe, western parts of the Middle East and eastern South America with a fixed angular resolution pixel size, equivalent to ...
Oscar van der Velde, Tomáš Púčik, Nicolau Pineda, Joan Montanyà, Jesús López, David Romero, Bartolomeo Viticchie, Sven-Erik Enno   +7 more
openaire   +1 more source

TRACER Lightning Mapping Array Field Campaign Report

2023
Marcus van Lier-Walqui, Eric Bruning, Kelcy Brunner, Toshi Matsui, Taka Iguchi   +4 more
openaire   +1 more source

New visualization and analysis tools for 3D Lightning Mapping Array data

The 3D Lightning Mapping Array (LMA) is a regional network of VHF antenna stations spaced 5-50 km apart that detect lightning pulses in the 60-66 MHz band. The pulses are timed by GPS. Time-of-arrival reconstruction results in 3D pulse locations, revealing the lightning leader channels (of negative polarity) inside the cloud and toward ground.
Oscar van der Velde, David Romero, Jesús López, Joan Montanyà, Nicolau Pineda, Ferran Fabró   +5 more
openaire   +1 more source

3D Mapping of Winter Lightning in Japan with an Array of Discone Antennas

IEEJ Transactions on Electrical and Electronic Engineering, 2022
Daohong Wang, Ting Wu, Haitao Huang
exaly  

A Simultaneous Observation of Lightning by ASIM, Colombia‐Lightning Mapping Array, GLM, and ISS‐LIS

Journal of Geophysical Research D: Atmospheres, 2021
Torsten Neubert, VÍCTOR Reglero, OSCAR van der Velde   +2 more
exaly  

A Low Computational Cost Lightning Mapping Algorithm With a Nonuniform L-Shaped Array: Principle and Verification

IEEE Transactions on Geoscience and Remote Sensing, 2022
Weijiang Chen, Ke-Jie Li, Huaifei Chen   +2 more
exaly  

Bidirectional development of sprite-producing lightning flashes mapped by the Ebro Lightning Mapping Array

2014
Velde, Oscar A Van Der, Montanyà, Joan, Soula, Serge, Pineda, Nicolau, Mlynarczyk, Janusz   +4 more
openaire   +1 more source