AN/TPY-2 transportable radar

The AN/TPY-2 Surveillance Transportable Radar, also called the Forward Based X-Band Transportable (FBX-T) is a long-range, very high-altitude active digital antenna array[1][2] X band surveillance radar designed to add a tier to existing missile and air defence systems.

The X band frequency and narrow beam width improve differentiation, or “range resolution,” between smaller objects, such as between warheads, clutter, and decoys.

[6] The U.S. Army developed the system and remains responsible for its use by air defense artillery in theater and tactical applications.

[citation needed] An AN/TPY-2 is based in Alaska as part of United States national missile defense development.

[7] It complements the fixed AN/FPS-129 HAVE STARE X-Band "large dish" radar, located at Vandenberg Air Force Base.