METHOD OF AND SYSTEM FOR TRACKING AN OBJECT RADIATING A CIRCULARLY OR LINEARLY POLARIZED ELECTROMAGNETIC SIGNAL

摘要

The method for tracking an object emitting a circularly or linearly-polarized electromagnetic wave utilizes only the TE21 mode signals, extracted by means of two pairs of slots (A, A min ; B, B min ) located on planes at pi /4 in the antenna feed. The signals of a slot pair are substracted one from the other and the resulting signals are made proportional to the antenna displacement from nominal object direction. This is obtained by making an angle phi , that determines the angular position of the plane passing through a pair, equal to half an angle alpha , that determines the angular position of the polarization plane. The system that carries out the method is also described.