Fast optimization method for polarization receiving based on space mapping theory

Aiming to solve the optimization problem of radar polarimetry, a fast local search method (FLSM) is proposed for bistatic case. The FLSM expedites searching speed of the optimal polarization by restricting the optimal solution in a local area. This local area is defined by the polarization states with respect to the maximum and minimum polarization receiving power (PRP). The performance of the FLSM is validated by comparing with the three-step method (TSM). Theoretical analyses indicate that the FLSM obtains the optimal PRP by searching an area which, statistically, has less than 25.26% searching area of the TSM. Numerical experiments demonstrate that the proposed method obtains the optimal polarization states more quickly and effectively than the TSM.