High frequency magnetic field direction finding using MGL-SSA B-dot sensors

Airborne high frequency (HF) direction finding is difficult due to wavelengths on the order of the aircraft size resulting in inefficient apertures and limited azimuthal resolution. This research effort focuses arrays of magnetic field sensors in a simulated airborne array. The MGL-S8A is a magnetic sensor developed for frequencies above 5 GHz and does not offer adequate sensitivity, but a larger MGL-5 sensor does offer efficiencies equivalent to previous research. Eight and ten-element airborne array designs prove to have limited azimuthal resolution, but addition of sensors increases null depth and reduces sidelobes improving the direction finding potential of the array.