Characterisation of wind field with high resolution in time and space by the use of electromagnetic and acoustic waves

摘要

The authors present a bistatic radio-acoustic system where a Bragg grid produced by a spherical pressure wave enhances the forward scattering capability by some 40 dB when matched to the EM phase front. The system is used to measure 3-D wind, turbulence and vortex parameters as wind phenomena alter the scattering characteristics of the acoustic Bragg grid.