Electromagnetic Scattering:A Remote Sensing Perspective by Yang Du

Author:Yang Du
Language: eng
Format: azw3
ISBN: 9789813209985
Publisher: WS Professional
Published: 2017-03-08T05:00:00+00:00

CHAPTER 5

NUMERICAL MODELING OF SCATTERING BY MULTIPLE BODIES OF REVOLUTION

JUN HU and YU-KE LI

School of Electronics Engineering, Zhejiang University,

Chengdu, 611731, P. R. China

XI RUI

Southwest China Institute of Electronic Technology,

Chengdu, 610036, P. R. China

QINGHUO LIU

Department of Electronic and Computer Engineering, Duke University,

Durham, 27705, U. S. A.

Abstract

In the areas of remote sensing, antenna, and microwave engineering, numerical modeling of electromagnetic scattering by single body of revolution (BoR) or multiple BoRs have received lots of attention. Because of the advantage of high accuracy, integral equation method (IEM) is often used in solving BoR problems. For single BoR, the 3-D problem can be reduced to 2.5-D problem by using of the modal Green’s function and BoR basis functions. This property leads to a great reduction of unknowns compared with traditional local basis function methods which that not consider the rotational symmetry of BoRs [1–5]. Unfortunately, it is difficult to extend the BoR basis functions to multiple BoRs, thus seeking some fast algorithms is inevitable. In this chapter, numerical solution of single/multiple BoRs by IEM and fast algorithms are introduced. The content include two parts: method of moment (MOM) for single BoR (BoR–MoM) is introduced in the first part, followed by two fast solvers for multiple BoRs in the second part, which are, respectively, fast direct solver based on characteristic basis functions method and fast iterative solver based on domain decomposition. Some useful investigation and discussions are also given.

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