ELF/VLF/LF Radio Propagation and Systems Aspects (La Propagation Des Ondes Radio ELF/VLF/LF Et Les Aspects Systemes).
ELF/VLF/LF Radio Propagation and Systems Aspects (La Propagation Des Ondes Radio ELF/VLF/LF Et Les Aspects Systemes).

Author:

Publisher:

Published: 1993

Total Pages: 345

ISBN-13:

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This publication reports the papers presented to a specialists' meeting held by the Electromagnetic Wave Propagation Panel at its Fall 1992 meeting. The topics covered on the occasion of that symposium include: Propagation aspects; Numerical modelling; Propagation measurements; and Propagation in sea water. Radio noise and interference; Long wave TE/TM Noise prediction model; Measurements; and ELF generated by auroral electrojet modulation. Antenna considerations; Antenna fundamentals; Scale modelling; Measurements of pattern and bandwidth; and Tethered aerostat VLF/LF transmitting antennas. System aspects; Viability assessment for reliable LW communication links. Future satellite systems; Orbiting system for ELF/VLF strategic communications, and Tethered satellite systems ... Electromagnetic propagation, Tethered ground based and satellite systems, Radio noise and interference, Reliability of LW communication links, Antenna considerations.

Handbook of Atmospheric Electrodynamics (1995)
Handbook of Atmospheric Electrodynamics (1995)

Author: Hans Volland

Publisher: CRC Press

Published: 2017-11-22

Total Pages: 769

ISBN-13: 1351364189

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The participation of such diverse scientific and technical disciplines as meteorology, astronomy, atmospheric electricity, ionospheric and magnetospheric physics, electromagnetic wave propagation, and radio techniques in the research of atmospherics means that results are published in scientific papers widely spread throughout the literature. This Handbook collects the latest knowledge on atmospherics and presents it in two volumes. Each chapter is written by an expert in his or her field. Topics include the physics of thunderclouds, thunder, global atmospheric electric currents, biological aspects of sferics, and various space techniques for detecting lightning within our own atmosphere as well as in the atmospheres of other planets. Up-to-date applications and methodology are detailed. Volumes I and II offer a comprehensive discussion that together will serve as an important resource for practitioners, professionals, and students alike.

VLF Radio Engineering
VLF Radio Engineering

Author: Arthur D. Watt

Publisher: Elsevier

Published: 2013-09-17

Total Pages: 724

ISBN-13: 1483152308

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Electromagnetic Waves, Volume 14: VLF Radio Engineering provides a detailed coverage of the fields involved in very low frequency (VLF) radio engineering. This book serves as a guide for applying the information in the solution of practical problems. Comprised of seven chapters, this volume starts with an overview of the communications aspect following the flow of information carrying energy from the transmitting to receiving locations. This text then presents the complete systems that consider the interrelationship of the various factors. Other chapters explain the basic concept of a VLF antenna, which is a vertical electric monopole over a perfectly conducting flat plane. This book discusses as well the radio wave propagation at VLF, which has been studied theoretically and experimentally for many years. The final chapter deals with the primary components of a complete VLF radio system. This book is a valuable resource for radio engineers, scientists, and researchers.

Electromechanical Transmitters for ELF/VLF Radio
Electromechanical Transmitters for ELF/VLF Radio

Author: Jarred S. Glickstein

Publisher: Springer Nature

Published: 2022-11-02

Total Pages: 222

ISBN-13: 3031151232

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This book describes a new, extremely low frequency (ELF)/ very low frequency (VLF) miniaturized transmitter concept, based on the mechanical motion of permanent magnets or electrets. The authors explain how utilizing the very high energy density of modern ferromagnetic and ferroelectric materials, such “electromechanical transmitters’’ can provide much higher field generation efficiency than conventional antennas, thus enabling practical ELF/VLF wireless communications links. The text begins with the fundamental challenges of such links and provides an historical overview of the attempts that have been made to address these challenges. It then focuses on the design and implementation of practical electromechanical ELF/VLF transmitters, which is an interdisciplinary subject that spans multiple research areas including electromagnetics, power electronics, control systems, and mechanical design. The authors also describe how such transmitters can be combined with receivers and signal processing algorithms to realize complete ELF/VLF links in challenging environments.