Electromagnetic wave scattering from random rough surfaces is an
active, interdisciplinary area of research with myriad practical
applications in fields such as optics, acoustics, geoscience and
remote sensing.
Focusing on the case of random rough surfaces, this book presents
classical asymptotic models used to describe electromagnetic wave
scattering. The authors begin by outlining the basic concepts
relevant to the topic before moving on to look at the derivation of
the scattered field under asymptotic models, based on the
Kirchhoff-tangent plane, in order to calculate both the scattered
field and the statistical average intensity.
More elaborated asymptotic models are also described for dealing
with specific cases, and numerical results are presented to
illustrate these models. Comparisons with a reference numerical
method are made to confirm and refine the theoretical validity
domains.
The final chapter derives the expressions of the scattering
intensities of random rough surfaces under the asymptotic models.
Its expressions are given for their incoherent contributions, from
statistical calculations. These results are then compared with
numerical computations using a Monte-Carlo process, as well as with
experimental models, for sea surface backscattering.
Contents
1. Electromagnetic Wave Scattering from Random Rough Surfaces:
Basics.
2. Derivation of the Scattered Field under Asymptotic Models.
3. Derivation of the Normalized Radar Cross-Section under
Asymptotic Models.
APPENDIX 1. Far-Field Scattered Fields under the Method of
Stationary Phase.
APPENDIX 2. Calculation of the Scattering Coefficients under the GO
for 3D Problems.
About the Authors
Nicolas Pinel worked as a Research Engineer at the IETR
(Institut d'Electronique et de Télécommunications
de Rennes) laboratory at Polytech Nantes (University of Nantes,
France) before joining Alyotech Technologies in Rennes, France, in
July 2013. His research interests are in the areas of radar and
optical remote sensing, scattering and propagation. In particular,
he works on asymptotic methods of electromagnetic wave scattering
from random rough surfaces and layers.
Christophe Bourlier works at the IETR (Institut
d'Electronique et de Télécommunications de Rennes)
laboratory at Polytech Nantes (University of Nantes, France) and is
also a Researcher at the French National Center for Scientific
Research (CNRS) on electromagnetic wave scattering from rough
surfaces and objects for remote sensing applications and radar
signatures. He is the author of more than 160 journal articles and
conference papers.
Autorentext
Dr. Nicolas Pinel is PhD in the Radar team of IREENA Laboratory at University of? Nantes Angers Le Mans, France.
Christophe Bourlier is works at IREENA (Institut de Recherche en Electrotechnique et Electronique de Nantes Atlantique, France) Laboratory, University of Nantes, France.
Zusammenfassung
Electromagnetic wave scattering from random rough surfaces is an active, interdisciplinary area of research with myriad practical applications in fields such as optics, acoustics, geoscience and remote sensing.
Focusing on the case of random rough surfaces, this book presents classical asymptotic models used to describe electromagnetic wave scattering. The authors begin by outlining the basic concepts relevant to the topic before moving on to look at the derivation of the scattered field under asymptotic models, based on the Kirchhoff-tangent plane, in order to calculate both the scattered field and the statistical average intensity.
More elaborated asymptotic models are also described for dealing with specific cases, and numerical results are presented to illustrate these models. Comparisons with a reference numerical method are made to confirm and refine the theoretical validity domains.
The final chapter derives the expressions of the scattering intensities of random rough surfaces under the asymptotic models. Its expressions are given for their incoherent contributions, from statistical calculations. These results are then compared with numerical computations using a Monte-Carlo process, as well as with experimental models, for sea surface backscattering.
Contents
1. Electromagnetic Wave Scattering from Random Rough Surfaces: Basics.
2. Derivation of the Scattered Field under Asymptotic Models.
3. Derivation of the Normalized Radar Cross-Section under Asymptotic Models.
APPENDIX 1. Far-Field Scattered Fields under the Method of Stationary Phase.
APPENDIX 2. Calculation of the Scattering Coefficients under the GO for 3D Problems.
About the Authors
Nicolas Pinel worked as a Research Engineer at the IETR (Institut d'Electronique et de Télécommunications de Rennes) laboratory at Polytech Nantes (University of Nantes, France) before joining Alyotech Technologies in Rennes, France, in July 2013. His research interests are in the areas of radar and optical remote sensing, scattering and propagation. In particular, he works on asymptotic methods of electromagnetic wave scattering from random rough surfaces and layers.
Christophe Bourlier works at the IETR (Institut d'Electronique et de Télécommunications de Rennes) laboratory at Polytech Nantes (University of Nantes, France) and is also a Researcher at the French National Center for Scientific Research (CNRS) on electromagnetic wave scattering from rough surfaces and objects for remote sensing applications and radar signatures. He is the author of more than 160 journal articles and conference papers.
Inhalt
PREFACE ix
INTRODUCTION x
CHAPTER 1. ELECTROMAGNETIC WAVE SCATTERING FROM RANDOM ROUGH
SURFACES: BASICS 1
1.1. Introduction 1
1.2. Generalities 2
1.2.1. Maxwell equations and boundary conditions 2
1.2.2. Propagation of a plane wave (Helmholtz equation and plane
wave) 5
1.2.3. Incident wave at an interface: polarization 7
1.3. Random rough surfaces: statistical description and
electromagnetic roughness 12
1.3.1. Statistical description of random rough surfaces 12
1.3.2. Specific case of sea surfaces 19
1.3.3. Electromagnetic roughness and Rayleigh roughness
criterion 21
1.4. Scattering of electromagnetic waves from rough surfaces:
basics 28
1.4.1. Presentation of the problem (2D/3D) 28
1.4.2. Huygens' principle and extinction theorem 30
1.4.3. Green functions (2D/3D) 33
1.4.4. Scattered powers and scattering coefficients 36
CHAPTER 2. DERIVATION OF THE SCATTERED FIELD UNDER ASYMPTOTIC
MODELS 41
2.1. Bibliography on existing models 42
2.1.1. Introduction 42
2.1.2. Rigorous models 43
2.1.3. Asymptotic models 44
2.1.4. General properties of scattering 52
2.1.5. A few details on the KA and the GO 55
2.2. Scattering in reflection and transmission under the KA with
shadowing effect 58
2.2.1. KA in reflection and transmission with shadowing effect
for 2D problems 58
2.2.2. Extension of the KA model to 3D problems 62
2.3. Scattering in reflection for 3D problems under various
asymptotic models 69
2.3.1. Context and specific notations 69
2.3.2. The small perturbation model 71
2.3.3. The Kirchhoff approximation-high-frequency regime
73
2.3.4. The weighted curvature approximation 75
2.3.5. The small slope approximation 75
2.3.6. The local curvature approximation 76
2.3.7. The resonant curvature approximation 76
2.3.8. Validation of the different asymptotic numerical models
for 2D problems 77
CHAPTER 3. DER…