改进的全球卫星导航系统阵列抗干扰方法

摘要

When the global navigation satellite system array receiver uses the multistage wiener filter technology to reduce the rank of covariance matrix ,it may resulted in poor performance and even the signal cancellation phenomenon on the condition that the continuous wave interference arrives from the expected direction.To re-solve the issue,an improved joint method is proposed based on the front-end adaptive notch filter was proposed. The method further adopted the householder transformation to achieve the numerical calculation based on the generalize side lobe canceller for the uniform circular array.The simulation data and experimental data indicated the proposed architecture had good rejection capabilities for the continuo continuous wave interference from the expected direction and wideband interference.%针对全球卫星导航系统(GNSS)阵列接收机采用多级维纳滤波进行降秩处理时，若在期望方向混入连续波干扰后会导致性能变差甚至是信号相消的现象，提出了基于前置自适应陷波器的组合改进方法。该方法在基于广义旁瓣相消结构的均匀圆阵上进一步采用 Householder 变换实现了算法的数值计算。仿真和试验表明整个系统构架具有很好的抗期望方向连续波干扰和抗宽带干扰的性能。