Backscattering enhancement of an electromagnetic wave scattered by two-dimensional rough layers.

نویسندگان

  • A Soubret
  • G Berginc
  • C Bourrely
چکیده

The problem of an electromagnetic wave scattered by a slab with two rough boundaries is solved by the small-perturbation method under the Rayleigh hypothesis. To obtain the perturbative development, we use a systematic procedure that involves integral equations called the reduced Rayleigh equations. Then we show for a dielectric slab deposited on a silver film that the backscattering enhancement can be produced by guided waves that interact with the two rough surfaces.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Monte Carlo simulations for scattering of electromagnetic waves from perfectly conductive random rough surfaces.

Numerical calculations of mean scattered intensities by simulation of one-dimensional perfectly conductive random rough surfaces are presented. Results relative to backscattering enhancement and more accurate criteria for the validity of the Kirchhoff approximation are obtained. This method can also be used for assessing perturbative theories and for further experiments.

متن کامل

A new application of reduced Rayleigh equations to electromagnetic wave scattering by two-dimensional randomly rough surfaces

The small perturbations method has been extensively used for waves scattering by rough surfaces. The standard method developped by Rice is difficult to apply when we consider second and third order of scattered fields as a function of the surface height. Calculations can be greatly simplified with the use of reduced Rayleigh equations, because one of the unknown fields can be eliminated. We der...

متن کامل

Scattering of electromagnetic waves from two-dimensional rough surfaces with an impedance approximation.

The sparse-matrix-flat-surface iterative approach has been implemented for perfectly conducting surfaces and modified to enhance convergence stability and speed for very rough surfaces. Monte Carlo simulations of backscattering enhancement using a beam decomposition technique are compared with millimeter-wave laboratory experimental data. Strong but finite conductivity for metals or thin skin d...

متن کامل

Imaging and Coherence in Rough Surface and Object Scattering

This paper is concerned with two problems. First, when the object is near a rough surface such as an ocean or terrain, and the transmitter and the receiver are also located near the surface, how can we image or detect the object which may be obscured by multiple scattering due to rough surface scattering. Second, even though multiple scattering generally increases the incoherent field, there ar...

متن کامل

Electromagnetic wave scattering from a random layer with rough interfaces II: Diffusive intensity

A general approach for the calculation of the incoherent intensity scattered by a random medium with rough boundaries has been developed using a Green function formalism. The random medium consists of spherical particles whose physical repartition is described by a pair-distribution function. The boundary contribution is included in the Green functions with the help of scattering operators whic...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of the Optical Society of America. A, Optics, image science, and vision

دوره 18 11  شماره 

صفحات  -

تاریخ انتشار 2001