Transmit beamforming for phased array based on constrained wind-driven optimization method

摘要

In this paper, we present a novel improved wind-driven optimization (IWDO) for transmit beamforming of phased array radar, which is assumed as a multiple constraints optimization problem. First, the emitted signal model and objective functions of optimization with constraints are presented. Second, all air parcels are divided into feasible and infeasible parcels, and then the target function and constraint violation of air parcels are evaluated. Finally, the constrained optimization problem is converted into the nonconstraint problem, and the proposed modified wind-driven optimization (WDO) has been applied for the optimal design of beamforming with null steering. The simulation results show that the proposed method outperforms conventional optimization methods in the optimal beamforming by achieving more reduction in the null steering and obtaining accurate peak power.