Advances in Monitoring of Velocities and Densities of Particulates Using Microwave Doppler Effect

Recent advances in monitoring of velocities, densities, and mass flow rates of particulates using a microwave Doppler radar are presented. It has been found that the Doppler signal scattered by the flow field of particulates contains information not only about the mean velocity of the field (mean frequency of the Doppler signal) but also about the mean density of the field (rms value of the Doppler signal). Experimental results obtained using a X-band Doppler module are presented.