David / Voge Propagation of Waves

1. Auflage 2013
ISBN: 978-1-4831-5337-7
Verlag: Elsevier Science & Techn.
Format: PDF
Kopierschutz: 1 - PDF Watermark

E-Book, Englisch, 344 Seiten, Web PDF

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.

Autoren/Hrsg.

David, P.

Voge, J.

Inhaltsverzeichnis

1;Front Cover;1
2;Propagation of Waves;4
3;Copyright Page;5
4;Table Of Contents;6
5;INTRODUCTION;10
6;CHAPTER 1. GENERALITIES;12
6.1;1.1. Basic formulae;12
6.2;1.2. Statistical study of variable fields;23
7;CHAPTER 2. CURRENTS AND PROPAGATION IN VARIOUS MEDIA;30
7.1;2.1. Properties of various types of currents;30
7.2;2.2. Complex media. Ionosphere. Terrain;33
7.3;2.3. Equations of propagation;36
7.4;2.4. Lossless medium
;38
7.5;2.5. Low-loss medium;39
7.6;2.6. High-loss medium;41
7.7;2.7. Summary;41
8;CHAPTER 3. PASSAGE FROM ONE MEDIUM TO ANOTHER. REFLECTION. REFRACTION;44
8.1;3.1. Normal incidence;44
8.2;3.2. Oblique incidence;47
8.3;3.3. Experimental verifications;61
9;CHAPTER 4. THE ROLE OF THE TERRAIN;64
9.1;4.1. General;64
9.2;4.2. The real case of very high stations;64
9.3;4.3. Stations near the ground but in direct line of sight. Interference zone;66
9.4;4.4. Diffraction (or "shadow") zone;84
9.5;4.5. Stations at any height;99
9.6;4.6. Intermediate zone. Near the horizon region;110
9.7;4.7. Conclusions regarding the ground wave;113
9.8;4.8. The effect of obstacles;113
10;CHAPTER 5. THE ROLE OF THE TROPOSPHERE;130
10.1;5.1. Review of meteorological ideas;133
10.2;5.2. Atmospheric refraction. Equivalent models for propagation calculations;136
10.3;5.3. The influence of the fine structure of the troposphere on propagation;141
10.4;5.4. Absorption by the atmosphere;162
11;CHAPTER 6. THE ROLE OF THE IONOSPHERE;167
11.1;6.1. General;167
11.2;6.2. Methods of studying the ionosphere;168
11.3;6.3. Constitution and "normal" variations of the ionosphere;183
11.4;6.4. Perturbations of the ionosphere;201
12;CHAPTER 7. INTERFERENCE;209
12.1;7.1. General;209
12.2;7.2. Internal noise in the receiver;211
12.3;7.3. Extra-terrestrial interference. Noise radiated by the atmosphere;219
12.4;7.4. Artificial interference;222
12.5;7.5. Atmospherics;226
12.6;7.6. Other types of interference;236
12.7;7.7. Conclusions;238
13;CHAPTER 8. APPLICATIONS. PROPAGATION IN VARIOUS WAVELENGTH RANGES;239
13.1;8.1. Propagation of very long waves (kilometric);240
13.2;8.2. Propagation of long and medium waves (2000-200 m);252
13.3;8.3. Propagation of intermediate waves (60-200 m);263
13.4;8.4. Propagation of short (decametric) waves (10-60 m);263
13.5;8.5. Propagation of metric and shorter waves;306
13.6;8.6. Submarine and subterranean propagation;322
13.7;8.7. Space telecommunications;324
14;INDEX;332