Efficient Processing of Alternately Polarized Radar Signals

Abstract

Processing of simultaneous measurements of differential polarization parameters (differential reflectivity, ZDR, and differential phase shift, ϕDP) and Doppler spectral moments is discussed. It is shown how ZDR and ϕDP modulate the Doppler signal and what effects they have on the autocovariance at lag 1 if a sequence of alternately polarized fields (linear horizontal, H, and vertical, V) is transmitted. A scheme to overcome these effects is proposed and demonstrated on recorded time series data from a radar with polarization diversity.