The Acoustic Passive RAdar (APRA) project focuses on the measurement of acoustic sound fields. These fields consist of a combination of pressure variations around atmospheric pressure and vibrations of the air molecules (particle velocity). By measuring the complete particle velocity field, one can detect the direction of sound.
Financing organisation: EFRO 2007-2013
Groups involved: Transducers Science and Technology (TST, MESA+)
Companies involved: Microflown Technologies BV, NEDAERO BV, Inspiro BV
People involved: TST: Remco Wiegerink (Assoc. Prof.), Gijs J.M. Krijnen (Prof.), Olti Pjetri (Ph.D.)