Abstract:

With the research on ballistic missile penetration and defense growing profoundly, target feature extraction becomes more rigorous. Flexible control of warhead and decoys’features is important so as to gain better penetration, while various features extracted from multi-sensors’data are key steps for distinguishing warhead and decoys in ballistic missile defense system. The achievements and technique on electromagnetic feature extraction of ballistic missile and decoy are investigated including the ISAR of complex motion targets, the geometrical characteristics extraction of ballistic targets, and the micro-Doppler feature extraction. Finally, the difficulties of ballistic target feature extraction are pointed out and some feature extraction ideas are given.