Computationally-efficient two Stage Hybrid approach for STAP in nonhomogeneous environment

The nonhomogeneous nature of the clutter environment and the deficiency of sample support often result in severely degraded detection performance. This paper presents a new two stage hybrid approach to the cancellation of clutter echoes in modern AEW radar systems equipped with digital beamforming. Since the new scheme requires a limited computational load, compared to the original two stage hybrid approach, the proposed scheme can be regarded as practical solutions for robust and effective STAP of nonhomogeneous radar data.