Interferometric acoustic imaging, joint representation and image deconvolution

Far field acoustics deals with intensity distribution as a function of angle and frequency. Interferometric antennas and processors are able to display it. This distribution is described as a joint representation associated to the conjugated variables time and frequency. For moving sources such interferometric images are deeply related to the so called "running spectrum" of the incoming wave. Angular resolution of the interferometric processor depends both on antenna and space coherence properties of the incoming waves. Deconvolution techniques are able to improve it. Some examples about noise imaging of vehicles are given.