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自适应波束形成算法能自动地将波束的主瓣对准期望用户信号的来波方向,零陷对准干扰信号的来波方向;但是常规的自适应算法形成的干扰零限比较尖锐,副瓣容易产生畸变,在干扰、天线平台快速移动的情况下,其性能将会严重下降.基于对权值的范数约束和对零点的最小二乘线性约束优化,提出了一种降低副瓣电平并且加宽零点的自适应波束形成算法.理论分析和计算机仿真结果证明了新算法的有效性.
The adaptive beamforming algorithm can automatically align the mainlobe of the beam with the direction of arrival of the expected user signal and align it with the incoming direction of the interfering signal. However, the conventional adaptive algorithm has a sharp interference zero limit and a sidelobe Which may cause distortion easily and its performance will be seriously degraded under the condition of interference and rapid movement of the antenna platform.Based on the norm constraint of weights and the least square linear constraint optimization of zero point, And broaden the zero adaptive beamforming algorithm.The theoretical analysis and computer simulation results prove the effectiveness of the new algorithm.