WAVE PROPAGATION
AND SCATTERING
IN RANDOM MEDIA
IEEE/OUP Series on Electromagnetic Wave Theory
The IEEE/OUP Series on Electromagnetic Wave Theory consists of new titles as well as
reprintings and revisions of recognized classics that maintain long-term archival significance
in electromagnetic waves and applications.
Series Editor
Donald G. Dudley
University of Arizona
Associate Editors
Electromagnetic Theory, Scattering, and
Diffraction
Ehud Heyman
Tel-A viv University
Advisory Board
Robert E. Collin
Case Western Reserve University
Differential Equation Methods
Andreas C. Cangellaris
University of Arizona
Akira Ishimaru
University of Washington
D. S. Jones
University of Dundee
Books in the Series
Integral Equation Methods
Donald R. Wilton
University of Houston
Antennas, Propagation, and Microwaves
David R. Jackson
University of Houston
Chew, W. C., Waves and Fields in Inhomogeneous Media
Christopoulos, C., The Transmission-Line Modeling Methods: TLM
Clemmow, P. C., The Plane Wave Spectrum Representation of Electromagnetic Fields
Collin, R. E., Field Theory of Guided Waves, Second Edition
Dudley, D. G., Mathematical Foundations for Electromagnetic Theory
Elliot, R. S., Electromagnetics: History, Theory, and Applications
Felsen, L. B., and Marcuvitz, N., Radiation and Scattering of Waves
Harrington, R. F., Field Computation by Moment Methods
Jones, D. S., Methods in Electromagnetic Wave Propagation, Second Edition
Lindell, I. V., Methods for Electromagnetic Field Analysis
Tai, C. T., Generalized Vector and Dyadic Analysis: Applied Mathematics in Field Theory
Tai, C. T., Dyadic Green Functions in Electromagnetic Theory, Second Edition
Van Bladel, J., Singular Electromagnetic Fields and Sources
Wait, J., Electromagnetic Waves in Stratified Media
WAVE PROPAGATION
AND SCATTERING
IN RANDOM MEDIA
----JIA~---
AKIRA ISHIMARU
UNIVERSITY of WASHINGTON
IEEE Antennas & Propagation Society, Sponsor
+ IEEE
~ PRESS
The Institute of Electrical
and Electronics Engineers, Inc.
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Oxford University Press
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First published by Academic Press 1978
Reissued by IEEE Press and Oxford University Press 1997
© 1997 by the Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, 17th Floor, New York, NY 10016-5997
All rights reserved. No part of this book may be reproduced in any form,
nor may it be stored in a retrieval system or transmitted in any form,
without written permission from the publisher.
Printed in the United States of America
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IEEE ISBN 0-7803-4717-X
IEEE Order Number: PP5677
The Library of Congress has catalogued the hard cover edition of this title as follows:
Ishimaru, Akira (date)
Wave propagation and scattering in random media j Akira Ishimaru.
p.
em. - (IEEEjOUP series on electromagnetic wave theory)
Originally published: New York: Academic Press, 1978.
Includes bibliographical references and index.
ISBN 0-7803-3409-4
1. Waves. 2. Scattering (Physics) I. Title. II. Series.
QC157.I83 1997
539'.2-dc.20
96-31357
CIP
CONTENTS
FOREWORD xix
PREFACE xxi
ACKNOWLEDGMENTS xxv
CHAPTER 1
INTRODUCTION 1
PART I
SCATTERING AND PROPAGATION OF WAVES IN
A TENUOUS DISTRIBUTION OF SCATTERERS:
SINGLE SCATTERING APPROXIMATION 7
CHAPTER 2
SCATTERING AND ABSORPTION OF A WAVE BY
A SINGLE PARTICLE 9
Cross Sections and Scattering Amplitude
General Properties of Cross Sections
12
Forward Scattering Theorem 14
Integral Representations of Scattering Amplitude and Absorption
9
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
2-9
2-10
2-11
2-12
18
Cross Section
15
Rayleigh Scattering
Rayleigh-Debye Scattering (Born Approximation)
WKB Interior Wave Number Approximation
25
Mie Theory
Elliptic Polarization and the Stokes Parameters
Partial Polarization and Natural Light
Addition of Independent Waves
Scattering Amplitude Functions III, 112, 121, and 122 and the Stokes
32
33
22
30
27
Matrix
33
2-13
Transformation of the Stokes Parameters for Rotation
about the Axis
35
2-14
Particle Size Distribution
36
vii
viii 0 CONTENTS
2-15 Acoustic Waves
37
2-16 Acoustic Scattering
39
CHAPTER 3
CHARACTERISTICS OF DISCRETE SCATTERERS
IN THE ATMOSPHERE, OCEAN, AND
BIOLOGICAL MATERIALS 41
3-1
3-2
3-3
3-4
3-5
43
50
49
43
41
Weather Radar, Clutter, and Interference
Aerosols and Hydrometeors
3-2-1 Rain
3-2-2 Clouds, Fog, Haze, and Smog
3-2-3 Snow and Hail
Optical Scattering in Seawater (Hydrooptics)
52
Underwater Acoustic Scattering (Hydroacoustics)
3-4-1 Scattering from Air Bubbles
3-4-2 Scattering from Fish
Scattering from Biological Materials
3-5-1 Bioelectromagnetics
3-5-2 Biooptics
3-5-3 Bioacoustics
60
62
63
67
55
58
62
CHAPTER 4
SCATTERING OF WAVES FROM THE TENUOUS
DISTRIBUTION OF PARTICLES 69
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
Single Scattering Approximation for Average Scattered Power
First Order Multiple Scattering Representation of Scattered
71
Power
73
Narrow Beam Equation
Coherent and Incoherent Fields
Time-Correlated Scattering Cross Section of a Moving Particle
80
Temporal Correlation Function and Temporal Frequency Spectrum
74
77
of Scattered Fields
85
Spatial Correlation of Scattered Fields
Correlation with a Moving Receiver
Probability Distributions of Scattered Fields
86
88
89