Patent ID: 9103862
Filing Date: 2015-08-11
Classification: G01R,H03D

Abstract:
1. A method for generating a spatio-temporal field in a reverberant environment in order to analyse behaviour of an object under test placed in the reverberant environment, said method comprising the following steps: estimating at least one transfer function between i) a first group of transducers comprising at least one transducer placed in the reverberant environment and ii) a second group of transducers comprising at least one transducer also placed in the reverberant environment; taking account of a spatial distribution of the transducers of the first group, selecting a spatio-temporal excitation field to be applied to the object under test; modeling primary signals which, when applied to the first group of transducers, obtains said selected spatio-temporal excitation field; applying said at least one transfer function to the modeled primary signals to thereby obtain secondary signals; determining excitation signals by applying i) a time reversal in time domain technique or ii) a phase conjugation in the frequency domain technique, on the obtained secondary signals; and obtaining said selected spatio-temporal excitation field by applying the determined excitation signals to the transducers of the second group, wherein said obtained spatio-temporal excitation field is a wave front propagating through the reverberant environment towards the object under test.