Angular Errors in Polarimetric Radar Cross Section Calibration Using a Rotating Dihedral

Published

October 30, 2005

Author(s)

Lorant A. Muth, Crystol William, Donald Morales, Timothy Conn

Abstract

We examine how accurately a radar cross section measurement system?s transmit and receive parameters can be determined by use of a rotating dihedral as the polarimetric calibration device. We derive expressions for the errors due to misalignment in the angle of rotation. We obtain expressions for the angles ?0,hv and ?0,vh for which the measured cross-polarization ratios of a target vanish. Since the theoretical crosspolarization ratio of a cylinder is 0, we can find the calibration bias-correction angles. We use simulated and real data to demonstrate the robustness of this bias-angle correction technique. We derive expressions for the uncertainty in the polarimetric system parameters.

Proceedings Title

Antenna Measurements Techniques Association

Conference Dates

October 30-November 4, 2005

Conference Location

Newport, RI, USA

Pub Type

Conferences

Keywords

angular errors, calibration, polarimetric radar cross section, rotating dihedrals

Citation

Muth, L. , William, C. , Morales, D. and Conn, T. (2005), Angular Errors in Polarimetric Radar Cross Section Calibration Using a Rotating Dihedral, Antenna Measurements Techniques Association, Newport, RI, USA (Accessed October 20, 2025)