Blind beamforming algorithm improvement based on GPS cyclostationarity
Liu Hon · Modern Electronics Technique · 2014
In the field of adaptive array anti-jamming of satellite navigation,a blind adaptive beamforming algorithm based on orthogonal projection and cyclostationary can be used to avoid the error caused by prior information and antenna array.In this paper,CD-OCAB and DS-OCAB algorithms are analyzed for GPS signal.The estimation of the cyclic auto-correlation function of white noise is not zero due to the limited data length in CD-OCAB.Accordingly,the performance of cyclostationary method may be negatively affected.Fortunately,DS-OCAB can avoid it.Taking into account the complexity of the project,the receiving data is reduced.Simulation results demonstrate that the DS-OCAB algorithm can keep its performance and improve its robustness.