Reducing the Effects of Doppler Radar Ambiguities

Abstract

The ambiguities associated with range and velocity aliasing of Doppler data fields can be reduced significantly with simple techniques. A variable two-PRT (pulse repetition time) system and the associated software are used to range de-alias Doppler velocity displays in real time. Velocity aliasing is reduced by subtracting the radial component of the environmental wind. These techniques have been used for several years in a real-time environment and a general evaluation of their usefulness is described in this paper.