Polarization Diversity Pulse-Pair technique for millimeter-wave Doppler radar measurements of severe storm features

The Polarization Diversity Pulse-Pair (PDPP) technique can extend simultane ously the maximum unambiguous range and the maximum unambiguous velocity of a Doppler weather radar. This technique has been applied using a high-reso lution 95-GHz radar to study the reflectivity and velocity structure in sev ere thunderstorms. This paper documents the technique, presents an analysis of the first two moments of the estimated mean velocity, and provides a co mparison of the results with experimental data, including PDPP images of hi gh-vorticity regions in supercell storms.