Benoit Oudompheng thesis defense took place November 4, 2015 in the laboratory of Grenoble INP Gipsa Lab. She ended the three years of work it has carried out between the company and Gipsa MicrodB Lab with the support of the DGA.
The objective of this thesis is to develop optimal methods for locating acoustic sources using antennas with little sensors. Although the methods developed must be applicable in both air marine environment as the main application concerns the identification of underwater acoustic sources of a surface building in motion.
In 2015, a campaign of surface ship model crossing noise measurement was performed at the site of acoustic tests of the DGA Naval Techniques to Lake Castillon. For this measurement campaign, a demonstrator consisting of an antenna and 9 hydrophone array processing methods was constructed. Several passages at speeds of 2 m/s to 5 m/s were carried out with artificial sources (shakers, speakers) and lit without artificial source. These measurements were used to validate the value of using the methods developed in this thesis to locate and estimate the contribution of acoustic sources of surface ship on real 5099data.