Armored phased array design

The Georgia Tech Research Institute (GTRI) has performed modeling, analysis, and testing of array face armoring as a survivability enhancement feature for a forward acquisition radar. This paper describes array face armoring technology developed by GTRI, including: (1) materials testing, (2) array element design, (3) waveguide simulator tests, and (4) armor mounting options. Results show that the array face can be protected against the simulated tactical threat while achieving acceptable electrical performance. The armoring consists of a layer of Spectra Shield (a proprietary material) approximately 2.54 cm thick covering the face of the array. It is noted that the array face armoring must be developed from the point of view of integrating the armor with the aperture/element design rather than designing the aperture then adding the armor.