基于宽带恒定束宽波束输出的卫星导航干扰源方位估计方法

针对卫星导航宽带压制式干扰信号,提出了一种基于宽带恒定束宽波束输出的卫星导航干扰源方位估计方法。首先对抗干扰天线阵列接收到的宽带压制式干扰信号做恒定束宽波束形成,然后采用三波束比幅法获得信号的入射方向估计值。本文方法改善了由宽带信号通过常规宽带波束形成系统所产生的信号失真而引入的测向误差。计算机仿真结果验证了本文方法的有效性和实用性。

Bearing Estimation Method of Satellite Navigation Interfering Source Based on Broadband Constant Beamwidth Beams

A bearing estimation method of navigation interfering source based on broadband constant beamwidth beams is proposed in this paper. In the case of receiving broadband barrage jamming signals by anti-jamming antenna array, the estimated bearing value can be obtained by constant beamwidth beam-forming, then a group of linear equations with three elements for the outputs of constant beamwidth beams is solved. The new method which is introduced in this paper has good performance for the bearing estimation error than that of the broadband beam amplitude comparison method based on the outputs of conventional broadband beams. The simulation results verify the effectiveness and practicability of the method in this paper.