Range profiles and images of a loaded straight wire

Author

Li, Hsueh-Jyh ; Farhat, Nabil H. ; Shen, Yuhsyen

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

37

Issue

1

fYear

1989

fDate

1/1/1989 12:00:00 AM

Firstpage

94

Lastpage

99

Abstract

The range profiles and images of a straight wire without and with lumped impedance loading are discussed and demonstrated. The scattering mechanisms of a straight wire are qualitatively analyzed using the method of moments. Plots of range profiles at different aspect angles show that surface traveling waves are important scattering mechanisms of a straight wire. The presence of traveling wave makes ringlike artifacts appear in the reconstructed images. It was found that lumped impedance loading can effectively distort the range profiles and microwave images of a wire scatterer. In addition, randomly varied reactive loading can generate random peaks in the range profiles

Keywords

electric impedance measurement; electromagnetic wave scattering; load (electric); aspect angles; loaded straight wire; lumped impedance loading; microwave images; moments method; randomly varied reactive loading; scattering mechanisms; surface traveling waves; wire scatterer; Doppler shift; Frequency; Helium; Image reconstruction; Microwave imaging; Radar scattering; Surface impedance; Surface reconstruction; Surface waves; Wire;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.192170

Filename

192170