Theory of Scintillation

ISBN-13: 9780470644775 / Angielski / Twarda / 2011 / 230 str.

Charles Rino;¬Abar;¬Abar

Opis

In order to truly understand data signals transmitted by satellite, one must understand scintillation theory in addition to well established theories of EM wave propagation and scattering. Scintillation is a nuisance in satellite EM communications, but it has stimulated numerous theoretical developments with science applications. This book not only presents a thorough theoretical explanation of scintillation, but it also offers a complete library of MATLAB codes that will reproduce the book examples. The library includes GPS coordinate manipulations, satellite orbit prediction, and earth mean magnetic field computations. The subect matter is for EM researchers; however, also theory is relevant to geophysics, acoustics, optics and astoronomy.

Spis treści

1. Introduction.

1.1 Electromagnetic Propagation Theory.

1.2 Anticipating Scintillation Theory.

2. The Forward Propagation Equation.

2.1 Weakly Inhomogeneous Media.

2.2 Numerical Simulations.

3. The Statistical Theory of Scintillation.

3.1 Background.

3.2 Calculation of Field Moments.

3.3 Second–Order Moments.

3.4 Fourth–Order Moments.

3.5 Intensity Statistics.

3.6 Numerical Simulations.

3.7 Statistical Theory Limitations.

4. Beacon Satellite Scintillation.

4.1 Geometric Considerations.

4.2 Phase Structure Revisited.

4.3 Complex Field Coherence Revisited.

4.4 Satellite Orbit & Earth Magnetic Field Calculation.

4.5 Examples.

4.6 Theory and Simulations.

5. System Applications of Scintillation.

5.1 An Introduction to Waveforms.

5.2 Scintillation Channel Model.

5.3 System Performance Analysis.

5.4 Scintillation Data Processing.

5.5 Scintillation Data Interpretation.

5.6 Beacon Satellite Research.

6. Scattering and Boundaries.

6.1 Embedded Compact Scattering Objects.

6.2 Boundary Surfaces.

Appendix A.

A.1 Far–Field Approximation.

A.2 Backscatter.

A.3 Anisotropy Transformations.

A.4 Wavefront Curvature Correction.

A.5 Two–Dimensional Boundary Integrals.

References.

Index.

O autorze

CHARLES L. RINO, PhD, is a former vice president of research, staff scientist, and seniorresearch engineer at Vista Research, Inc. His past professional assignments include incoherent scatter radar research, ionosphere beacon satellite research (Wideband, Hilat, and Polar Bear), and propagation and scatter research sponsored by the Defense Nuclear Agency and the Army Research Office. Dr. Rino is an IEEE Fellow and a member of the American Geophysical Union.

Blurb

A thorough review of scintillation theory and real–world applications

Researchers and engineers apply the name scintillation to any observable irregular variation of a wave field e.g., intensity, phase, angle of arrival, Doppler shift, and delay. Scintillation is a nuisance in satellite electromagnetic communications, but this phenomenon has stimulated numerous theoretical developments with science applications. In order to truly understand data signals transmitted by satellites, one must understand scintillation theory in addition to well–established theories of electromagnetic wave propagation and scattering.

This book presents a complete theoretical explanation of scintillation with diverse applications. The author′s approach provides an algorithmic formulation that admits no intrinsic limitations, and effectively reformulates the theory to take full advantage of readily available modern computational resources. He tightly integrates practical and scientific applications by using modern signal processing and information theoretic structures, and extends the theory to accommodate scattering objects and boundary surfaces.

The first three chapters present a rigorous but transparent development of scintillation theory. Known analytic results are presented with references to analytic methods that have been used to demonstrate fundamental characteristics. Following chapters treat beacon satellite applications, channel modeling, and scattering in presence of discrete scattering objects and surfaces. Finally, the last chapter addresses remote sensing, featuring an example from synthetic aperture radar.

The robust algorithms presented here can be used to simulate extremely complex phenomena well outside the bounds of analytic results. A complete library of MATLAB codes that reproduce the book′s examples and practical case studies can be obtained from the Matlab Central File Exchange.

This book is designed for electromagnetic wave researchers and practitioners as well as students; it will also benefit professors teaching propagation theory and radio wave and optical communication specialists.