Cancellation of rain-echoes from 3 cm radar performance

Abstract

This paper describes the use of circular polarization to remove rain and cloud echoes from the display of 3-cm. radar sets. Reports from U.S.A. and U.K. on the use of G.C.A. for homing extremely high speed jet fighters in conditions of heavy precipitation have suggested that the aircraft echoes are being lost in the rain returns, and that the useful range of the equipment is seriously reduced.