A criterion for radar antenna design to enhance efficacy of polarimetric entropy in moving target discrimination

Target identification has drawn lots of attentions in remote sensing and radar applications. Among various algorithms, the polarimetric entropy is a powerful means to discriminate between different targets. This paper begins with a brief review of polarimetric entropy and its formulation. Then, we discuss the formulas qualitatively, and based on the discussion, we propose a criterion for radar antenna design to enhance the target-identifying efficacy. Lastly, an exemplary scenario satisfying the proposed design criterion is considered. After performing full-wave scattering simulations on the scenario, the polarimetric entropies can readily be calculated, and the results outperform those in the conventional paradigm.