Practical Applications of Asymptotic Techniques in Electromagnetics

Name: Practical Applications of Asymptotic Techniques in Electromagnetics
Brand: Artech House
Price: 146.49 EUR
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Francisco Saez De Adana(Autor*in)

Artech House (Verlag)

1. Auflage

Erschienen am 1. Januar 2010

230 Seiten

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Practical Applications of Asymptotic Techniques in Electromagnetics
Contents
Preface
Chapter 1 Introduction
1.1 ASYMPTOTIC TECHNIQUES AND REAL-WORLD PROBLEMS
1.2 STRUCTURE OF THIS BOOK
References
Chapter 2 Geometric Description of the Bodies and Computation of Geometric Parameters
2.1 OVERVIEW OF THE GEOMETRIC MODELING OF COMPLEX OBJECTS
2.2 RATIONAL BEZIER CURVES
2.3 RATIONAL B-SPLINE CURVES
2.4 RATIONAL BEZIER SURFACES
2.5 RATIONAL B-SPLINE SURFACES
2.6 TRANSFORMATION FROM NURBS REPRESENTATION TO BEZIER REPRESENTATION
2.7 COMPUTATION OF GEOMETRIC PARAMETERS ON BEZIER SURFACES
2.7.1 Computation of Unit Normal Vectors
2.7.2 Computation of Principal Curvature Radii and Principal Directions
References
Chapter 3 Geometrical Optics and Uniform Theory of Diffraction (GO/UTD)
3.1 HISTORICAL OVERVIEW
3.2 GEOMETRICAL OPTICS EQUATIONS
3.2.1 Ray Trajectory
3.2.2 Polarization
3.2.3 Phase
3.2.4 Amplitude
3.3 DIRECT RAY
3.3.1 Electromagnetic Field Calculation
3.3.2 Determination of the Direct Rays
3.4 REFLECTED FIELD
3.4.1 Electromagnetic Field Calculation
3.4.2 Determining Reflected Rays and Computing Reflection Points
3.5 DIFFRACTED FIELD
3.5.1 Electromagnetic Field Calculation
3.5.2 Determining Diffracted Rays and Computing Diffraction Points
3.6 DOUBLE EFFECTS
3.6.1 Electromagnetic Field Calculation
3.6.2 Determining Double Effect Rays
3.7 CREEPING WAVES
3.7.1 Electromagnetic Field Calculation
3.7.2 Determining Creeping Wave Trajectories
References
Chapter 4 Physical Optics and Physical Theory of Diffraction (PO/PTD)
4.1 INTRODUCTION TO PO/PTD
4.2 PHYSICAL OPTICS FOUNDATIONS
4.3 METHODS TO CALCULATE THE PO INTEGRAL FOR COMPLEX BODIES
4.3.1 Numerical Integration
4.3.2 Ludwig Method
4.3.3 Method of Plane Facets
4.3.4 Method of Numerical Quadrature
4.3.5 Method of the Graphical Processing of the Image
4.3.6 Current Modes
4.4 THE STATIONARY PHASE METHOD
4.5 APPLICATION OF PO TO THE COMPUTATION OF HIGHER-ORDER REFLECTIONS
4.5.1 Multiple Reflections Between Plane Surfaces
4.5.2 Double Reflection Between a Plane Surface and a Curved Surface
4.5.3 Double Reflection Between Curved Surfaces Using the SPM
4.6 PHYSICAL THEORY OF DIFFRACTION AND THE EQUIVALENT CURRENT METHOD
4.7 INTRODUCTION OF RADAR ABSORBING MATERIALS (RAM) IN THE PO FORMULATION
References
Chapter 5 Acceleration Techniques
5.1 ACCELERATION TECHNIQUES APPLIED TO HIGH-FREQUENCY PROBLEMS
5.2 ELIMINATION OF SURFACES USING SIMPLE CRITERIA
5.2.1 Normal Vector Criterion
5.2.2 Intersection with the Bounding Box
5.3 CLASSICAL TECHNIQUES FOR THE RAY-TRACING ACCELERATION FOR THE SHADOWING TEST
5.3.1 The Angular Z-Buffer (AZB) Algorithm
5.3.2 Space Volumetric Partitioning (SVP)
5.4 APPLICATION OF THE AZB TO BODIES MODELED BY PARAMETRIC SURFACES
5.4.1 Application to the Shadowing of the Direct Ray
5.4.2 Application to the Shadowing of an Intermediate Ray
5.4.3 Application to the Determination of the Reflection Points
5.4.4 Application to Multiple-Order Reflections
5.4.5 Application to the Shadowing of the Diffracted Ray
5.5 COMBINATION OF AZB-SVP FOR THE ANALYSIS IN THE NEAR ZONE
5.6 APPLICATION OF AZB FOR THE ANALYSIS OF THE RCS
5.6.1 Application to Plane Facets
5.6.2 Application to Curved Surfaces
5.6.3 Application to Double- and Higher-Order Effects Between Plane Facets
References
Chapter 6 Applications
6.1 OVERVIEW OF ASYMPTOTIC TECHNIQUE CODES
6.2 RESULTS OBTAINED WITH FASANT
6.2.1 Radiation Pattern of Antennas On-Board the Jason and Stentor Satellites
6.2.2 Radiation Pattern of Antennas On-Board the International Space Station (ISS)
6.2.3 Satellite Indoor Reception in Vienna
6.2.4 Wind Turbines
6.3 RESULTS OBTAINED WITH POGCROS AND NUMERICAL EVALUATION OF THE PO INTEGRAL
6.3.1 RCS of a Scud Missile
6.3.2 Analysis of the Range-Profile Image of the Tabarca Ship
6.3.3 Cavity Analysis
6.3.4 Analysis of a Reflector Antenna
References
About the Authors
Index

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