Electromagnetic complex cavity characterization of a fighter aircraft main weapons bay

Frequency-swept power insertion loss measurements have been performed on a fighter aircraft main weapons bay to assess the reverberant electromagnetic environment created by radio frequency emissions into the confined, reflective space at 915 MHz (telemetry module fundamental frequency), 1830 MHz (telemetry module second-harmonic frequency), 2250 MHz (S-band), and 5650 MHz (C-band). Cavity calibration factors are calculated from these measurements and are subsequently used to predict resultant maximum reverberant electric fields for any given total radiated power into that space. The cavity calibration factors for the aircraft main weapons bay (left side) are on the order of 10-20 V/m/radicW, making them comparable to those found in the most highly reverberant below-deck spaces in Navy ships.