Results 21 to 30 of about 24,612 (230)

A Comparison of Processing Methods for the Oklahoma Lightning Mapping Array [PDF]

Earth and Space Science, 2022
The Oklahoma Lightning Mapping Array (OKLMA) has consisted of 17 Very High Frequency (VHF) sensors in two separate clusters separated by roughly 150 km since 2012.
V. C. Chmielewski, J. Blair, D. Kennedy, D. MacGorman, K. M. Calhoun   +4 more
doaj   +2 more sources

Characterization of Hybrid Lightning Flashes Observed by Fast Antenna Lightning Mapping Array in Summer Thunderstorms

Atmosphere
Using the observation data from Fast Antenna Lightning Mapping Array, we have sub-divided 288 hybrid flashes that are obviously different from traditional intracloud (IC) and negative cloud-to-ground (NCG) flashes into three types: IC–NCG lightning (85),
Dongdong Shi, Jie Shao, Rubin Jiang, Daohong Wang, Ting Wu, Li Wang   +5 more
doaj   +2 more sources

Lightning Mapping Array flash detection performance with variable receiver thresholds. [PDF]

J Geophys Res Atmos, 2016
AbstractThis study characterizes Lightning Mapping Array performance for networks that participated in the Deep Convective Clouds and Chemistry field program using new Monte Carlo and curvature matrix model simulations. These open‐source simulation tools are readily adapted to real‐time operations or detailed studies of performance.
Chmielewski VC, Bruning EC.
europepmc   +4 more sources

Accuracy of the Lightning Mapping Array [PDF]

Journal of Geophysical Research: Atmospheres, 2004
The location accuracy of the New Mexico Tech Lightning Mapping Array (LMA) has been investigated experimentally using sounding balloon measurements, airplane tracks, and observations of distant storms. We have also developed simple geometric models for estimating the location uncertainty of sources both over and outside the network.
Ronald J. Thomas, Paul R. Krehbiel, William Rison, Steven J. Hunyady, William P. Winn, Timothy Hamlin, Jeremiah Harlin   +6 more
openaire   +1 more source

Characteristics of Lightning Within Electrified Snowfall Events Using Lightning Mapping Arrays [PDF]

Journal of Geophysical Research: Atmospheres, 2018
AbstractThis study examined 34 lightning flashes within four separate thundersnow events derived from lightning mapping arrays (LMAs) in northern Alabama, central Oklahoma, and Washington DC. The goals were to characterize the in‐cloud component of each lightning flash, as well as the correspondence between the LMA observations and lightning data taken
Christopher J. Schultz, Timothy J. Lang, Eric C. Bruning, Kristin M. Calhoun, Sebastian Harkema, Nathan Curtis   +5 more
openaire   +2 more sources

Insulator fault feature extraction system of substation equipment based on machine vision

IET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang, Qiaoqun Xia, Lijun Ma, Xin Xu, Zhipeng Shao   +4 more
wiley   +1 more source

Application of 3D scanning technology in Royal Malaysian Air Force Industrial Revolution 4.0‐based aircraft maintenance

IET Networks, EarlyView., 2022
Abstract 3D scanning is rapidly becoming a key maintenance tool. Aerospace was a pioneer in adopting 3D scanning technology because aircraft manufacture and maintenance require precision. Monitoring deterioration, removing components for maintenance, and verifying covert operations are not practical or helpful without technology.
T. Nanthakumaran Thulasy, Puteri N. E. Nohuddin, Istas Fahrurrazi Nusyirwan, Mohd Hanafi Ahmad Hijazi, Musaddak Maher Abdul Zahra   +4 more
wiley   +1 more source

Lightning flash properties derived from Lightning Mapping Array data

2014 International Conference on Lightning Protection (ICLP), 2014
in this paper size and duration of lightning flashes are examined. Data from the Ebro Valley Laboratory Lightning Mapping Array is used as reference. Additional data from the VLF/LF LINET network and meteorological radar is included. In order to simplify the complex geometry of a lightning flash, each flash is described by a confidence ellipse ...
Montañá Puig, Juan, Van der Velde, Oscar Arnoud, Solà de las Fuentes, Glòria, Fabró Tàpia, Ferran, Romero Durán, David, Pineda Ruegg, Nicolau, Argemí Ribera, Oriol   +6 more
openaire   +2 more sources

Natural observatories for lightning research in Colombia [PDF]

, 2018
This paper presents a selected, not exhaustive, description of lightning research in Colombia over time, based on natural observatories for experimentation and measurement; and introduces the DABEIBA Lightning Research Center as a new institutional ...
Aranguren Fino, Harby Daniel, López Trujillo, Jesús Alberto, Montañá Puig, Juan, Torres Sanchez, Horacio   +3 more
core   +1 more source

Initial Results of Long-term Continuous Observation of Lightning Discharges by FALMA in Chinese Inland Plateau Region

Atmosphere, 2021
We started a long-term continuous observation of lightning discharges in the Chinese inland plateau region using a fast antenna lightning mapping array (FALMA).
Panliang Gao, Ting Wu, Daohong Wang
doaj   +1 more source