基于阻塞矩阵预处理的抗主瓣干扰算法

Anti-mainlobe Interference Algorithm Based on Blocking Matrix Preprocessing

针对阻塞矩阵预处理的抗主瓣干扰算法会导致主瓣波束方向发生偏移且加载点平不易选取的问题,提出了改进的基于阻塞矩阵预处理的抗主瓣干扰算法。该算法从理论上进行了分析,并利用对加权矢量进行二次不等式约束来提高波束的指向性,对于约束方程的求解问题,提出了利用Lagrange乘数法进行求解。仿真验证表明提出的算法能够有效解决主瓣波束偏移,对加权值的选取提供理论指导。

The main-lobe interference suppression algorithm for blocking matrix preprocessing could cause the main lobe beam direction to shift and the loading point is hard to select.An improved main-lobe interference algorithm based on blocking matrix preprocessing was proposed to solve the problem.The algorithm was analyzed theoretically,and the quadratic inequality constraints on the weighted vectors were used to improve the beam directivity.For solving the constraint equations,a Lagrange multiplier method was used to solve the problem.Simulation results showed that the proposed algorithm could effectively solve the main lobe beam offset and provided theoretical guidance for the selection of weighted values.