基于自适应阵列理论的波瓣置零综合

Pattern Nulling Synthesis Based on Adaptive Array Theory

本文给出了一种基于Gram-Schmidt正交化方法的自适应波瓣置零综合的新算法,此算法采用的是单元零点向量法,它不仅保持了已有算法在波瓣置零综合中的全部优点,而且在对付宽频带干扰及设置较宽的零点凹口时,阵列副瓣电平上升不大。与通常的算法相比,在设置相同的零点凹口情况下,副瓣电平下降了3～5dB。作为应用举例,本文同时给出了新算法与现已报导的RAMONA波瓣置零综合算法的计算机仿真的数值比较结果。

In this paper, a novel algorithm for adaptive pattern nulling synthesis is presented which is based on the Gram-Schmidt orthogonalization and uses the element nulling vector method. This algorithm has all advantages of original algorithm in the pattern nulling synthesis, and can obtain lower sidelobe level in suppressing the wide band clutter and setting wide notch. In comparison with normal algorithms, this new algorithm can reduce about 3 to 5 dB of the sidelobe level when the same notch is set. As application examples, the comparable numerical results are given for the computer simulation of this algorithm and the RAMON A algorithm.