A modified dimension-reduced space-time adaptive processing method

Space-time adaptive processing (STAP) is an effective method for the clutter cancellation, but the computational complexity of the full degrees of freedom (DOF) is too large to achieve in practice. A modified dimension-reduced STAP method is proposed. By selecting auxiliary channels near the clutter ridge, this modified method is a suboptimum approach and it needs much less computational complexity than the optimum one. The simulation result shows that the SCNR output of this method is better than that of other typical dimension-reduced methods. As a result, this method is an appropriate and valid approach for the clutter cancellation in practice.