Adaptive polarimetric MIMO radar detection

This paper mainly deals with the target detecting problem using polarimetric Multiple Input and Multiple Output (MIMO) radar with unknown covariance matrix. And the GLRT-based receiver is devised by resorting to the two-step design procedure. Specifically, the GLRT is devised with known covariance, and then, a suitable estimate of covariance is obtained using secondary data to plug into the derived test. The performance is assessed by several numerical examples, and the results show that polarimetric diversity can be exploited to enhance the performance of detection. Moreover, the adaptive loss is acceptable.