在完成复杂网络环境下抗干扰的过程中,各种干扰信号构成的混合信号极为复杂,当前的有关信息最大化的复杂电磁网络环境下抗干扰方法,仅能将复杂信号分离成超高斯分布或亚高斯函数分布信号,无法进一步细化,不能实现复杂网络环境下的抗干扰,提出一种关于波束赋形技术的复杂电磁网络环境下的抗干扰方法,从时域与频域两个角度分析复杂电磁网络环境信号;依据波束形成对空间传感器的采样加权进行求和操作,提高某一特定方向传播波信号,避免其它方向的干扰。对来波方向和阵列法线方向的夹角进行定义,形成波束后的输出信号,给出阵列的方向矩阵以及方向向量,利用Bulter变换矩阵完成阵元域到波束域之间的转换。仿真结果表明,所提方法具有很高的抗干扰能力。
At the completion of anti-jamming in the process of the complex network environment,all kinds of jamming signals in the composition of mixed signal are very complex,the complex electromagnetic interference under the network environment based on information maximization method,can only separate the complex signals into super gaussian distribution or sub-gaussian signal function distribution,and cannot be further refined,anti-interference cannot implement complex under the network environment. The paper put forward a technology based on the beam informs complex electromagnetic anti-interference methods,under the network environment from two angles of time domain and frequency domain analysis of complicated electromagnetic signal network environment. Based on beamforming for space sensors sampling weighted sum operation,we improved particular direction transmission wave signal,which can avoid the interference of other directions. The wave direction and the array of normal direction angle were defined,forming a beam output signal. After the array in the direction of the matrix and the direction vector were given,we used complete transformation matrix Bulter matrix conversion between yuan domain to beam domain. The simulation results show that the proposed method has high anti-jamming ability.