Computation of the Natural Poles of an Object in the Frequency Domain Using the Cauchy Method

Author

Woojin Lee ; Sarkar, T.K. ; Hongsik Moon ; Salazar-Palma, M.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Syracuse Univ., Syracuse, NY, USA

Volume

11

fYear

2012

fDate

7/4/1905 12:00:00 AM

Firstpage

1137

Lastpage

1140

Abstract

A methodology for the computation of the natural poles of an object in the frequency domain is presented. This methodology is then applied to compute the natural poles for perfectly conducting objects (PEC) in the frequency domain and compare the results to those obtained using the usual late time response. The main advantage of the proposed method is that there is no need to differentiate between the early time and the late time response of the object because the Cauchy method is applied to extract the Singularity Expansion Method (SEM) poles directly in the frequency domain. Simulation examples are analyzed to illustrate the potential of this method.

Keywords

electromagnetic wave scattering; radar theory; Cauchy method; PEC; SEM poles; frequency domain; natural poles computation; perfectly conducting objects; radar system; singularity expansion method; Damping; Frequency domain analysis; Libraries; Matrix decomposition; Polynomials; Resonant frequency; Time factors; Cauchy method; Matrix Pencil (MP) method; Singularity Expansion Method (SEM); natural poles; resonance; scattered electromagnetic field;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2012.2219846

Filename

6307812