Georgia Tech coherent jammer flight test

A test program to accurately measure the interaction between a coherent jammer and a radar is described. Theoretical calculations comprised finding closed form solutions for the jammer/radar interaction, and considered slant range antenna patterns, radar cross section, frequency, polarization, and scenario geometry, in addition to the development of computer programs to study electronic countermeasures techniques. A jammer was devised to meet the specifications derived from the analytical work and mounted on a test aircraft with 14 track analog pulse-to-pulse recording equipment. The data acquisition systems and data flow are diagrammed and experimental procedures are outlined for a radar pulse ratio frequency of 2800 Hz and a pulse width of 0.5 microsec. The plane will follow head-on, zig-zag, and constant off-set flight paths toward the radar to test the jammer capabilities.