高频地波雷达的三维极化滤波  

Three Dimension Polarization Filtering of HF Ground Wave Radar

作　　者：张国毅[1] 刘永坦[1] 

机构地区：[1]哈尔滨工业大学,哈尔滨150001

出　　处：《电子学报》2000年第9期114-116,共3页Acta Electronica Sinica

摘　　要：本文提出了采用三维正交极化接收天线对高频地波雷达天波干扰进行极化滤波的方法 ,此法能在极化域和空域综合抑制二维正交极化滤波不能滤除的干扰 .为了进一步提高抗干扰能力 ,文中给出了x,y分量最佳实数加权法 ,理论证明这种加权法可以减小极化损失、有效提高滤波器输出SINR。A method of suppressing HF sky wave interference in ground wave OTH radar is put forward,in which three dimension orthogonally polarized receiving antennas are utilized.The new technique can suppress the sky wave interference which can′t be handled in a two dimension orthogonal polarization filter.In order to further improve the interference suppression ability,an optimum weighting method is given.It is proved in theory that the weighting method can effectively decrease polarization loss,increase output SINR and enlarge interference suppression area in polarization domain and space domain.

关 键 词：高波地波雷达 极化滤波 干扰抑制 天线 

分 类 号：TN957.52[电子电信—信号与信息处理]