The description of the relationship between plasma turbulence, flows and confinement is one of the milestones in the global understanding of fusion plasma physics. In order to study the turbulence dynamics with the best possible spatial and temporal resolution, we developed a FMCW (frequency-modulated continuous-wave) microwave radar diagnostic. The density fluctuation is recorded by the reflected signal. The time resolution of 1 s and the spatial resolution of a few millimetres allow to study the turbulence spectra and the fast density dynamics due to confinement transitions. The ongoing work is dedicated to the development of a synthetic diagnostic which couples the turbulence maps resulted from gyrokinetic simulations with the 2D wave propagation code to be compared with the experimental reflectometry data.