Cross-polarized radar reflections from wet snow and ice droplets at weather radar wavelengths

The copolar radar reflection cross sections Q/sub HH/ and Q/sub VV/ from a collection of spheroid scatterers in the melting layer formed by ice precipitation prior to becoming rain have been analyzed by the authors in a recent work (IEEE Trans. Antennas and Propagation, vol.38, p.1317-25, Sept. 1990). The model is extended to calculate the cross-polarized cross section Q/sub VH/ due to reception at an electric-field polarization orthogonal to that of transmission. The authors are specifically interested in the cross-polarized differential reflectivity L/sub dr/=10 log/sub 10/(Q/sub VH//Q/sub HH/).<
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