Green's function retrieval and frequency-wavenumber methods for multiple source localization

In this work, Green's function retrieval and frequency-wavenumber methods are employed for multiple source localization in an outdoor environment. The Green's function retrieval methods are used to improve the signal-to-noise ratio of the beamforming maps. The frequency-wavenumber method is adapted to the plane-wave beamforming map to accurately localize real sources, while removing the appearance of ghost sources due to the data-association problem and mitigating missed detections for sources close together. Open field microphone array measurements of active and passive sources are investigated.