Radar estimation of turbulence eddy dissipation rate in rain

This paper deals with the algorithm for estimating the turbulence intensity in rain, which is developed on the basis of the model of Doppler-polarimetric spectra of radar signals, reflected from turbulent zones in precipitation. The relationship between the Doppler spectrum width of rain and the eddy dissipation rate is established at two orthogonal polarizations. The approximation of this relationship by Weibull model provides mathematical convenience for further analysis and synthesis. An algorithm for the estimation of turbulence intensity is developed on the basis of modeled and measured Doppler-polarimetric data. This algorithm is researched by statistical simulation. It is shown that the Doppler-polarimetric approach provides an accuracy increase in comparison with the Doppler method without polarization information.