Integrated microcavity electric field sensors using Pound-Drever-Hall detection

X Ma, Z Cai, C Zhuang, X Liu, Z Zhang, K Liu… - Nature …, 2024 - nature.com
Discerning weak electric fields has important implications for cosmology, quantum
technology, and identifying power system failures. Photonic integration of electric field …

Compact intracloud discharges: New classification of field waveforms and identification by lightning locating systems

AFR Leal, VA Rakov, BRP Rocha - Electric Power Systems Research, 2019 - Elsevier
We analyzed wideband electric field waveforms of 1022 compact intracloud discharges
(CIDs) that transported negative charge upward and were recorded in 2016 by the Lightning …

A study of the context in which compact intracloud discharges occur

AFR Leal, VA Rakov - Scientific reports, 2019 - nature.com
The occurrence context of compact intracloud discharges (CIDs) is examined using their
electric field waveforms and corresponding NLDN data. A total of 1096 CIDs transporting …

Characterization of lightning electric field waveforms using a large database: 1. Methodology

AFR Leal, VA Rakov - IEEE Transactions on Electromagnetic …, 2021 - ieeexplore.ieee.org
A new approach to the characterization of CG lightning electric field waveforms using a large
database is presented. The waveforms, recorded in a wide (160 Hz-500 kHz) frequency …

Performance Analysis of Artificial Intelligence Approaches for LEMP Classification

AFR Leal, GAVS Ferreira, WLN Matos - Remote Sensing, 2023 - mdpi.com
Lightning Electromagnetic Pulses, or LEMPs, propagate in the Earth–ionosphere waveguide
and can be detected remotely by ground-based lightning electric field sensors. LEMPs …

Characteristics of negative cloud‐to‐ground flashes observed in the Brazilian amazon region

AFR Leal, WLN Matos, ER Ferreira… - Journal of …, 2021 - Wiley Online Library
Features of negative cloud‐to‐ground (CG) flashes in the eastern Amazon region of Brazil,
near the equator line, were analyzed from their wideband (160 Hz–10 MHz) electric field …

Processes in negative and positive CG lightning flashes detected from space by GLM

AFR Leal, VA Rakov - Electric Power Systems Research, 2024 - Elsevier
Negative and positive lightning flashes involve a number of different processes, including
the preliminary breakdown, stepped and dart leaders, return strokes, continuing currents, M …

An intelligent lightning warning system based on electromagnetic field and neural network

G Wang, WH Kim, GS Kil, DW Park, SW Kim - Energies, 2019 - mdpi.com
Prediction of lightning occurrence has significant relevance for reducing potential damage to
electric installations, buildings, and humans. However, the existing lightning warning system …

MEMS-based electric field sensor with environmental adaptability consideration and its application in the near-ground atmosphere

WEN Xiaolong, P Yang, CHU Zhaozhi… - Journal of Physics …, 2021 - iopscience.iop.org
The near-ground electric field (E-field) is an important parameter needed to be measured for
lightning warning systems. Yet, most of the E-field sensors are based on bulky and …

Upgrading a low-cost system for measuring lightning electric field waveforms

AFR Leal, VA Rakov, BRP Rocha - IEEE transactions on …, 2018 - ieeexplore.ieee.org
Recent upgrades of the low-cost lightning detection and waveform storage system (LDWSS)
are presented. The system has been developed for research and operational use in the …