Author: Lillie C. Walters Publisher: ISBN: Category : Electromagnetic waves Languages : en Pages : 28
Book Description
Extensive numerical results are presented for the reflection coefficient of a horizontally stratified ionized medium. The profiles of electron density and the collision frequencies are both taken to be exponential functions. The d-c magnetic field is taken to be horizontal and transverse to the direction of propagation. The specific results described are applicable to the oblique reflection of VLF radio waves in the D layer of the ionosphere for propagation along the magnetic equator. It is confirmed that the reflection coefficient is non-reciprocal in both amplitude and phase. For a wide range of the parameters, the magnitude of the reflection coefficient is greater for west-to-east propagation than for east-to-west propagation. The extensive graphical data in the present paper are to be regarded as supplementary to the paper 'Reflection of Electromagnetic Waves from a Lossy Magetoplasma' which contained only a small sample of such calculations. (Author).
Author: Lillie C. Walters Publisher: Forgotten Books ISBN: 9780483062771 Category : Science Languages : en Pages : 34
Book Description
Excerpt from Numerical Calculations for Reflection of Electromagnetic Waves From a Lossy Magnetoplasma As mentioned above, these are typical of the daytime D layer for both the N and v profiles. For this model, the reflected wave is also vertically polarized and thus the reflection coefficient is. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Lillie C Wait James R Walters Publisher: Hassell Street Press ISBN: 9781014401243 Category : Languages : en Pages : 32
Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Lillie C. Walters Publisher: ISBN: Category : Electromagnetic waves Languages : en Pages : 32
Book Description
Extensive numerical results are presented for the reflection coefficient of a horizontally stratified ionized medium. The profiles of electron density and the collision frequencies are both taken to be exponential functions. The d-c magnetic field is taken to be horizontal and transverse to the direction of propagation. The specific results described are applicable to the oblique reflection of VLF radio waves in the D layer of the ionosphere for propagation along the magnetic equator. It is confirmed that the reflection coefficient is non-reciprocal in both amplitude and phase. For a wide range of the parameters, the magnitude of the reflection coefficient is greater for west-to-east propagation than for east-to-west propagation. The extensive graphical data in the present paper are to be regarded as supplementary to the paper 'Reflection of Electromagnetic Waves from a Lossy Magetoplasma' which contained only a small sample of such calculations. (Author).
Author: Arthur D. Watt Publisher: Elsevier ISBN: 1483152308 Category : Technology & Engineering Languages : en Pages : 724
Book Description
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.
Author: Leslie A. Berry Publisher: ISBN: Category : Geometrical optics Languages : en Pages : 114
Book Description
Numerical values of the path integrals for the first five hops are given as a function of distance from 1000 km to 8000 km, for frequencies of 10, 20, 30, 60, 100, 150, and 200 kHz., for sea paths, and for land paths with conductivities of 0 * .01 and 0.001 mhos/m, assuming reflection heights of 60, 70, 80, 90, and 100 km.For convenience, ground wave curves for the same parameters are given.Using these values, and any ionospheric reflection coefficients, the individual time modes, and the total field can be calculated simply.The calculation is valid near the caustic and in the shadow region.The path integrals can also be used to extract ionospheric reflection coefficients from experimental data. (Author).
Author: James R. Wait Publisher: ISBN: Category : Ionospheric radio wave propagation Languages : en Pages : 104
Book Description
The principal results of this technical note are graphical presentations of the attenuation rates, phase velocities, and excitation factors for the dominant modes in the earth-ionosphere waveguide.The frequency range considered is 8 kc/s to 30 kc/s. *The model adopted for the ionosphere has an exponential variation for both the electron density and the collision frequency, and the effect of the earth's magnetic field is considered.Comparison with published experimental data confirms that the minimum attenuation of VLF radio waves in daytime is approximtely at 18 kc/s, while at night it is somewhat lower.The directional dependences of propagation predicted by the theory are also confirmed by experimental data.(Author).
Author: Lillie C. Walters
Author: Lillie C. Walters
Author: Lillie C. Walters
Author: Lillie C Wait James R Walters
Author: Lillie C. Walters
Author: 
Author: Arthur D. Watt
Author: Leslie A. Berry
Author: James R. Wait
Author: United States. Department of Commerce