Robustness of matrix filter with deep troughs against interference motion

We derive a new matrix filter that is robust against fast-moving strong interference in application to array processing. Array interpolation technique is used to design this matrix filter by setting deep troughs in the directions of the moving interference while minimizing the interpolation error outside these troughs. Unlike many other design methods of matrix filter, our approach obtains directly analysis solution of the interpolation matrix, doesn´t need resort to SeDuMe or other optimization software and therefore can be applied in real time. Simulation results validate the robustness and effectiveness of the proposed approach.