Phase-only multidimensional spatio-temporal analysis for moving sources

The estimation of source motion parameters takes a considerable importance for many areas. Especially for underwater acoustic applications where a large amount of data is available. This paper deals with the estimation of source motion parameters directly from the spatio-temporal data. A general frame for a separate estimation of the spatial frequencies and spatial frequency-rate is presented, avoiding thus the dramatic interference problems. One basic idea consists in using basically the relative phase shifts without any consideration of source powers. The other consists in considering interpolation as a basic tool for spatio-temporal analysis