ABSTRACT
The correlation coefficient is a very important radar parameter. Since the value is completely independent from power, it seems better to combine correlation and power information together to apply for detection, classification, and identification purpose. Among correlation coefficients in various polarization bases, the correlation in the circular polarization basis performs the best up to now. It has interesting features such as the polarization orientation angle and the reflection/nonreflection ratio.
In the calculation process, we often face higher-order scattering terms that do not contribute to the final value of correlation coefficient or similarity parameter. A compensation scheme to small elements by amplification is shown for the equipolarimetric contribution purpose. This may enrich the full utilization of polarimetric information.
