Space mapping optimisation of 2D array elements arrangement to reduce the radar cross-scattering

摘要

The authors propose a novel aggressive space mapping (ASM) algorithm for the two-dimensional antenna array elements arrangement to reduce the antenna array radar cross-scattering; meanwhile, to ensure the radiation performance. The coarse model is evaluated with genetic algorithm and analytic formulations, the fine model verification is computed with the full wave method of moments (MoMs) enhanced by the equivalence principle algorithm (EPA). The high-order basis functions and matrix compression technique are employed in the EPA-MoM for further accelerations. Only small number of iterations in the ASM optimisation is required for the fine model verification, to achieve the optimisation requirements. Numerical tests of the horn antenna array optimisation with moderate time are presented to show the efficiency of the proposed algorithm.