Cross-polarized signal

From Glossary of Meteorology

cross-polarized signal

A signal received by a radar that has a polarization orthogonal to that of the transmitted signal. Two polarizations are orthogonal if 1) the ellipses defined by their electric field vectors have the same axial ratio, 2) the major axes of the ellipses are at right angles, and 3) the electric field vectors rotate in opposite directions.