Algorithm Improving for Space-Time Anti-Jamming Based on Satelitte Navigation Receiver
Zhai Yong-gang · Hangkong bingqi · 2009
Based on the analysis of the algorithms implementing Multistage Wiener Filter(MSWF),Which is implemented by the correlation subtraction structure is proved to be the projection performed and the blocking operation and not to be orthogonal to the cross-correlation vector in finite-precision environments.Through modifying block matrix and using the multistage decomposition structure,the correlation subtractive structure space-time interference subspace is constructed.Then applying subspace projection method the optimal filter is derived out.Comparing with conventional CSS-MWFD algorithm,in a finite-precision implementation,the method proposed in this paper outperforms it in the anti-jamming task.The validity of the proposed algorithm is proved by the simulation results.