AIRCRAFT VLF RECEIVING ANTENNA

摘要

Apparatus for receiving the horizontal electric field component of incoming VLF signals to improve airborne communication systems. Vertical antenna elements and horizontal antenna elements are positioned in space quadrature with respect to each other about the fuselage of an aircraft to receive the vertical component and noise, and the horizontal component, respectively, when the aircraft is flying level. Vertically polarized signal and noise received by the two antennas when the aircraft bank angle and pitch are not zero are subtracted from the output of the horizontal antenna elements.