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Statistical Properties of the Dual-Polarization Differential Reflectivity (ZDR) Radar Signal

1983; Institute of Electrical and Electronics Engineers; Volume: GE-21; Issue: 2 Linguagem: Inglês

10.1109/tgrs.1983.350491

1558-0644

V. N. Bringi, T. A. Seliga, Stephen M. Cherry,

Ocean Waves and Remote Sensing

The statistical characteristics of three estimators of the differential reflectivity (ZDR) radar signal are examined theoretically and compared with pulse-to-pulse measurements of reflectivity at horizontal and vertical polarizations. The square-law and log-ratio estimators provide satisfactory means for measuring ZDR while the log-ratio estimator does not. In addition, the theory is consistent with radar data, clearly showing that ZDR could be measured accurately from a sequence of alternately polarized waves.