摘要
本文提出一种导航接收机最小方差抗多径方法,针对均匀线阵空时二维滤波器结构,推导出权值求解公式,能使天线接收方向图在干扰信号的到达方向上形成窄的零陷,同时对地面反射的有用信号多径方向自适应地形成零陷。仿真结果验证了本文空时滤波结构抑制多径信号的有效性。算法可以应用在车载、机载、弹载抗干扰导航接收机设备,适应实际环境中存在复杂干扰以及多径信号等情况。
In this article,we present a new minimum variance anti-multipath method for navigation receivers.A new weight calculation formula is proposed based on space-time twodimensional filter structure of the linear array,which can form nulling at the multipath signals directions,and form narrow nulling at the interference signal directions as well.The performance analysis of computer simulation verify the efficiency of the proposed algorithm.The proposed method can be applied to navigation receiver on the vehicle,aeroplane,bomb etc.,it can adapt to the environment of malicious interference and multipath interference.
出处
《全球定位系统》
CSCD
2015年第2期1-5,共5页
Gnss World of China
基金
2014年度北京市博士后经费
关键词
空时自适应
波束形成
导向矢量
最小方差
Space-time adaptive processing
beamforming
steering vector
minimum variance
