Selecting sampling interval of transient response for the improved Prony method

Author

Lee, Joon-Ho ; Kim, Hyo-Tae

Author_Institution

Dept. of Electron. Electr. Eng., Pohang Univ. of Sci. & Technol., South Korea

Volume

51

Issue

1

fYear

2003

fDate

1/1/2003 12:00:00 AM

Firstpage

74

Lastpage

77

Abstract

A sampling interval selection scheme for use with the improved Prony method is proposed. Since natural frequency extraction is a numerically ill-conditioned problem, a small change in the sampling interval results in a large change in the extracted natural frequencies. From the perturbation of the eigenvectors of the matrix, the accuracy criterion of the extracted natural frequencies is derived. The proposed scheme is validated using natural frequency extraction from the synthetic response, the method of moments (MM) response, and the measured response.

Keywords

conducting bodies; eigenvalues and eigenfunctions; electromagnetic fields; electromagnetic wave scattering; matrix algebra; method of moments; resonance; transient response; accuracy criterion; conducting body; eigenvectors perturbation; frequency perturbation; improved Prony method; matrix; measured response; method of moments response; natural frequency extraction; numerically ill-conditioned problem; sampling interval selection; scattered electromagnetic field; synthetic response; transient response; Eigenvalues and eigenfunctions; Electromagnetic fields; Electromagnetic measurements; Electromagnetic scattering; Equations; Frequency measurement; Helium; Moment methods; Sampling methods; Transient response;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2003.808551

Filename

1187418