一种基于简化极化敏感阵列的APES波束形成算法

为了有效降低极化敏感阵列各共点分量之间互耦的相互影响,进一步提高极化阵列的滤波性能,基于新的阵列模型提出了幅度相位估计(APES)波束形成算法。首先,给出了简化极化阵列的布阵模型和接收信号模型;然后,针对简化极化阵列给出了极化APES波束形成算法的详细理论推导,得到了最优权向量的表达式;最后,通过仿真实验验证了极化APES在波束形成方面的有效性。仿真结果表明该算法在强期望信号功率、低采样快拍数或是存在相干干扰的情况下都具有稳定的波束图。

An APES beamforming algorithm based on simplified polarization sensitive array

In order to reduce the mutual coupling effect between collocated elements of the polarization sensitive array(PSA) and further improve filter performance,a novel APES(Amplitude and Phase Estimation) beamforming algorithm using the simplified PSA is proposed in this paper.First,the array model and the received signal model of the simplified PSA are presented.Second,the principle of the proposed algorithm is derived and the expression of the optimal weight vector is achieved.Finally,the simulation results are shown to verify the effectiveness of the proposed algorithm.Simulation results indicate that the proposed algorithm can obtain a stable beam pattern under the circumstances of high desired signal power,low sampling snapshots and coherent interferences.