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International Journal of Antennas and Propagation
Volume 2013, Article ID 276310, 5 pages
Research Article

Cross Beam STAP for Nonstationary Clutter Suppression in Airborne Radar

Key Research Laboratory, Wuhan Early Warning Academy, Wuhan 430019, China

Received 4 April 2013; Accepted 30 August 2013

Academic Editor: Hang Hu

Copyright © 2013 Yongliang Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A novel space-time adaptive processing (STAP) method for nonstationary clutter suppression is proposed. The developed method forms a multibeam along the cross line to participate in adaptive processing, which sufficiently utilizes the spatial information both in azimuth and elevation and guarantees the least system degrees of freedom (DOFs). The characteristics of this structure help to suppress the short-range clutter which is the primary component of nonstationary clutter. Therefore, this method provides favorable clutter suppression performance when clutter range dependence exists. Approach analysis and simulation results are given to demonstrate the effectiveness of the method.