Defeating theater missile defense radars with active decoys

Sherman Frankel, "Defeating theater missile defense radars with active decoys," Science & Global Security, 6, no. 3, (1997): 333-355.
A study is made of how decoys of different levels of sophistication can defeat theater missile defense radars. In particular we describe an active decoy system consisting of transponders, located on both decoy and warhead, which are deceptive jammers, producing returns to the radars that are identical for both decoy and warhead. The signals override the normal signals reflected from warhead or decoy. The method depends only on knowledge of electromagnetic theory and requires no knowledge of classified material. It capitalizes on special properties of readily available frequency independent antennas. Such decoys can defeat the presently planned THAAD ABM system.

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