Centre National De La Recherche Scientifique

Université´ D'aix-Marseille

Ecole Centrale De Marseille

Serge Mensah

Anabela Da Silva

Younes Achaoui

Eric Debieu

Zoubida Hammadi

Cédric Alain François Marie Payan

Roger Claude Marcel Morin

The invention concerns a method for controlling at least one gas bubble produced in a localised manner in a medium (') allowing the movement of said at least one gas bubble, characterised in that it comprises a step consisting of generating at least one ultrasound burst towards said at least one gas bubble, said at least one burst being emitted for a burst duration at least partially covering a duration during which said gas is effectively being produced.

Method for controlling at least one gas bubble produced in a localised manner

A method for locating at least one target, in an electromagnetically absorbent environment, includes: emitting at least one electromagnetic excitation signal from a source; receiving, by an acoustic sensor, an acoustic signal from emission of the excitation signal; detecting, in the received acoustic signal, a first time of receipt of a first response to the excitation signal from an acoustic disturbance caused by electromagnetic heterogeneity of the target in the environment; estimating a first distance between the target and the acoustic sensor using the first time of receipt; detecting, in the same received acoustic signal, a second time of receipt of a second response to the excitation signal from an acoustic disturbance caused by acoustic heterogeneity of the target in the environment; estimating a second distance between the source and target using the second time of receipt; obtaining a location of the target from the first and second estimated distances.

Method and device for locating at least one target in an electromagnetically absorbent environment

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Marseilles, France

Serge Mensah