Analysis of the linear depolarization ratio variability in the radiolocation sensing of inhomogeneous medium filled with hydrometeors

Authors: Masalov E. V., Krivin N. N., Kokoulin K. V.

Annotation: The theoretical results for estimating the linear depolarization ratio are obtained by using the Jones vector in eigenbasis of the homogeneous propagation medium and the complex phasor of the radar signal scattered by the second medium region which follows directly after the first, homogeneous medium region. The second medium region is characterized by anisotropic polarization properties and orientation angle of its eigenbasis. Herewith changes in the polarization structure of the radar signal in the process of its propagation in this medium are analyzed. Such changes depend on initial orientation angle of the polarization basis of the radar relative to the eigenbasis of the homogeneous region, the degree of anisotropy of the second region and orientation angle of its eigenbasis. Linear depolarization ratio calculation results in the radar signal reception point for the different rain intensity are given. Obtained results are analyzed.

Keywords: polarization, ellipticity angle, polarization ellipse orientation angle, differential attenuation, differential phase shift, orientation angle of the anisotropic region's eigenbasis, polarization anisotropy degree, linear depolarization ratio, precipitation