Improved Anti-Jamming Techniques for Navigation Receivers

Followed by analysis of the algorithms implementing Multistage Wiener Filter(MSWF),we find that the blocking operations,when practically implemented,with limited-precision,in its Correlation Subtraction Structure, does not results in the projection subspace,theoretically orthogonal to the cross-correlation vector.We then accordingly modify the blocking matrix making use of the multistage decomposition structure of the MSWF,based on the correlation subtractive structure,to construct the space-time interference subspace.Further,the resulted subspace projection is applied to obtain the required optimal filter.We demonstrate that,in a finite-precision navigation receivers case study,the proposed algorithm,in addition to its easy implement ability and practically validity,over-performs the conventional MSWF-CSS algorithm,for anti-jamming purposes.