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Publication Citation: Nonlinear calibration of polarimetric radar cross section systems

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Author(s): Lorant A. Muth;
Title: Nonlinear calibration of polarimetric radar cross section systems
Published: November 04, 2009
Abstract: Polarimetric radar cross section systems are characterized by polarimetric system parameters $\epsilon_h$ and $\epsilon_v$. These parameters can be obtained with the use of rotating dihedrals. The full polarimetric dataset as a function of the angle of rotation can be analyzed with a nonlinear set of calibration equations to yield the system-parameter complex constants and the four polarimetric calibration amplitudes. These amplitudes appropriately reproduce the system drift and satisfy a drift-free system configuration criterion very accurately. The results indicate that the nonlinear approach is better than the previously studied linear approach, which yielded system parameters that are seriously distorted by drift.
Conference: 2009 Antenna Measurement Techniques Association (AMTA) Symposium
Proceedings: AMTA 2009
Pages: pp. 310 - 315
Location: Salt Lake City, UT
Dates: November 1-6, 2009
Keywords: drift; nonlinear polarimetric calibration; polarimetric system parameters; radar cross section; reproducibility
Research Areas: Electromagnetics
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