Relationship between an interval of correlation of echo-signal envelope and turbulence intensity in radar reflecting volume of cloud or precipitation

Abstract

The width of the autocorrelation function (ACF) is characterized by the interval of correlation at the 0.5 level, /spl tau//sub 0.5/. The eddy dissipation rate (/spl epsi/) is a fundamental parameter that describes the intensity of turbulence. We use simulation data and build a model of the relationship between the characteristics of a radar echo-signal and parameters of reflecting objects at sample size n=30. The results of calculation with K as a level of a reference of an interval of correlation (K=0.5, /spl lambda/=3.2cm) are presented. We find rather good agreement between the interval of correlation and the intensity of turbulence. The simulation results suggest that sample size n=15 is insufficient for deriving measuring information by using classical algorithms for ACF calculation.