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http://dx.doi.org/10.5515/KJKIEES.2012.23.6.723

Analysis for the RCS of a Trihedral Corner Reflector with Consideration of the Effect of Front Surface  

Shin, Jong-Chul (Department of Electronic Information and Communication Engineering, Hongik University)
Kweon, Soon-Koo (Department of Electronic Information and Communication Engineering, Hongik University)
Oh, Yi-Sok (Department of Electronic Information and Communication Engineering, Hongik University)
Kim, Se-Young (Agency for Defense Development)
Jeon, Byeong-Tae (Agency for Defense Development)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.23, no.6, 2012 , pp. 723-730 More about this Journal
Abstract
The radar cross section(RCS) of a trihedral corner reflector(TCR) should be accurately computed when it is used as an external calibration target for a satellite synthetic aperture radar(SAR) calibration campaign. This paper presents the RCS analysis on a trihedral corner reflector which is installed on a calibration site, using the wave reflection from the rough surface and the wave diffraction from the TCR edges. The results in this paper show quantitatively the effect of the front surface on the RCS of a TCR. The difference of the RCS between a TCR in air and a TCR on a ground surface is computed by including the interaction term which consists of the edge diffraction from the TCR edges and the surface reflection from the front rough surface. The reflection coefficient of a randomly rough surface is a function of the surface roughness and dielectric constant of the surface. The RCS of $10{\lambda}$ size TCR on a ground is 0.46 dB higher than TCR in air at 9.65 GHz, and this can reach at maximum 1.55 dB depending on a surface condition and TCR size. The effect of the front surface on the RCS of a TCR increases, as the surface roughness decreases, the soil moisture increases, and the size of TCR in wavelength decreases.
Keywords
RCS of TCR; SAR; Front Surface;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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