Nonlinear Calibration of Polarimetric Radar Cross Section Measurement Systems

被引：12

作者：

Muth, Lorant A. ^{[1
]}

机构：

[1] NIST, Elect & Elect Engn Lab, Boulder, CO 80305 USA

来源：

IEEE ANTENNAS AND PROPAGATION MAGAZINE | 2010年 / 52卷 / 03期

关键词：

Radar cross sections; electromagnetic measurements; drift; nonlinear polarimetric calibration; polarimetric system parameters; reproducibility;

D O I：

10.1109/MAP.2010.5586625

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Polarimetric radar cross section measurement systems are characterized by polarimetric system parameters epsilon(h) and epsilon(v). These parameters can be measured by 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's drift, and very accurately satisfy a drift-free system-configuration criterion. The results indicate that the nonlinear approach is better than the previously studied linear approach, which yielded system parameters that were seriously distorted by system drift.

引用

页码：187 / 192

页数：7