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Propagation of Waves
1st Edition - January 1, 1969
Authors: P. David, J. Voge
eBook ISBN:9781483153377
9 7 8 - 1 - 4 8 3 1 - 5 3 3 7 - 7
Propagation of Waves focuses on the wave propagation around the earth, which is influenced by its curvature, surface irregularities, and by passage through atmospheric layers that… Read more
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Propagation of Waves focuses on the wave propagation around the earth, which is influenced by its curvature, surface irregularities, and by passage through atmospheric layers that may be refracting, absorbing, or ionized. This book begins by outlining the behavior of waves in the various media and at their interfaces, which simplifies the basic phenomena, such as absorption, refraction, reflection, and interference. Applications to the case of the terrestrial sphere are also discussed as a natural generalization. Following the deliberation on the diffraction of the “ground” wave around the earth, this text summarizes the role and properties of the troposphere and ionosphere from a general physical point of view. Examples and maps are provided to illustrate the use of the various methods in the determination of ranges or favorable wavelengths. A brief discussion on problems encountered in the field of space communications is also included. This publication is a good source for students and individuals researching on wave propagation, specifically on the principles of radiation and propagation in a homogeneous, isotropy, and lossless dielectric.
Introduction
Chapter 1. Generalities
1.1 Basic Formula
1.1.1 Transmission Formula
1.1.2 Reception Formula
1.1.3 Formula for the Combined Link
1.2 Statistical Study of Variable Fields
1.2.1 Amplitude Probability Distribution
1.2.2 Speed of Variation
Chapter 2. Currents and Propagation in Various Media
2.1 Properties of Various Types of Currents
2.2 Complex Media. Ionosphere. Terrain
2.3 Equations of Propagation
2.4 Lossless Medium: τ = σ = 0
2.5 Low-Loss Medium
2.6 High-Loss Medium
2.7 Summary
Chapter 3. Passage from One Medium to Another. Reflection. Refraction
3.1 Normal Incidence
3.2 Oblique Incidence
3.2.1 Horizontal Polarization
3.2.2 Vertical Polarization
3.2.3 Discussion of the Oblique Incidence Reflection Coefficients
3.2.4 Resultant Electric Field in the Neighborhood of the Surface of Separation
3.2.5 The Case of a Finite Reflecting Surface. Fresnel Zones
3.2.6 The Case of an Irregular Surface. Rayleigh's Criterion. Diffusion
3.3 Experimental Verifications
Chapter 4. The Role of the Terrain
4.1 General
4.2 The Real Case of Very High Stations
4.3 Stations near the Ground but in Direct Line of Sight. Interference Zone