国防科技大学学报Issue(3)：15-20,6.DOI:10.11887/j.cn.201503003
级联结构的阵列天线导航接收机抗干扰及多径抑制方法
A two-stage anti-jamming and multipath mitigation method in GNSS receivers using antenna array
摘要
Abstract
Array processing is widely used to achieve anti-jamming and multipath mitigation in GNSS(Global Navigation Satillite System) receivers for its ability to provide spatial resolution.According to different influences of interference and multipath signals to the signal processing in GNSS receivers,a two-stage anti-jamming and multipath mitigation structure divided by the correlation integrator was proposed.In the first stage, before despreading the space-time covariance matrix was estimated and anti-jamming was realized by using the subspace projection technique with the assumption that the interference power was bigger than the sum of GNSS signal and noise.In the second stage,spatial smoothing was used for multipath decoherence,and then a beamformer based on GSC (Generalized Sidelobe Cancellation ) method with householder transform was implemented for multipath mitigation.Theoretical analysis and simulation results show that the proposed method can effectively suppress the strong interference and can significantly reduce the multipath signal effects on code measurement of GNSS receiver.关键词
阵列天线/抗干扰/多径抑制/导航接收机Key words
antenna array/anti-jamming/multipath mitigation/global navigation satellite system receiver分类
信息技术与安全科学引用本文复制引用
关刚强,雍玲,聂俊伟,王飞雪..级联结构的阵列天线导航接收机抗干扰及多径抑制方法[J].国防科技大学学报,2015,(3):15-20,6.基金项目
教育部新世纪人才支持计划资助项目 （）
