均匀圆阵微分约束的加宽零陷动态抗干扰方法

Algorithm of null widening dynamic anti-jamming under differential constraints for uniform circular array

为了提升载体动态场景下GNSS阵列天线的抗干扰性能,提出一种均匀圆阵下基于微分约束的加宽零陷动态抗干扰方法:通过建立信号模型给出该算法;并给出其求解加权矢量所需的一种来向估计方法。实验结果表明:该算法对于干扰来向的零陷具有加宽、加深以及平滑的作用;但存在会在随机方向引入伪零陷的问题。

In order to enhance the performance of anti-jamming for GNSS array antenna under the dynamic scenario of carriers,the paper proposed a method of null widening dynamic anti-jamming under differential constraints for uniform circular array:the algorithm was given by establishing signal models;and a direction-of-arrival estimation method for solving the weighted vectors of the algorithm was introduced.Experimental result showed that:the proposed method could widen,deepen and smooth the nulls of the jamming direction;however,there would exist pseudo nulls imported in random directions.