基于特征值分解的多阵元空频抗干扰技术研究

Research into The Space-frequency Anti-jamming Technology of Multi-array Element Based on Eigenvalue Decomposition

空频抗干扰技术对大功率压制干扰信号具备良好的抑制效果,但随着电磁环境越来越复杂,要求抗干扰天线阵元的个数也随之增加,导致自相关矩阵直接求逆的计算量急剧增大,不便于实际工程的实现。基于特征值分解的空频抗干扰技术通过变换处理避免直接求逆,在保证抗干扰性能基本不变的情况下降低了计算量,便于工程实现。对其进行了仿真分析及试验验证,证明了其有效性。

The space-frequency anti-jamming technology has good suppressing effect on high-power suppressing jamming signals.With the electromagnetic environment becomes more and more complex,the number of antenna array elements are also required to increase,which results in the increasing of the calculation of finding the inverse auto-correlation matrix,and it is not convenient for the engineering realization.The space-frequency anti-jamming technology based on eigenvalue decomposition can avoid direct inverse,reduce the calculation and keep the anti-jamming performance unchanged basically,so it is more conducive to engineering implementation.Simulation analysis and test verification are carried out to prove its effectiveness in this paper.