... MNI of the RM is chosento be the same as the MNI of the SM. In this case, when the values of all the parameters of the setP are strictly equal to their counterparts in the set p and the values ... the signal {U(p, t) ; t ∈ [td, tf]}. (x1, 0) are the cartesian coordinates of the position of the receiver on the ground and (0, 0) the position of the emitter, also on the ground, of the ... (D) from the point of its emission to the point of its reception in the liquid. The solution of Colladon’s problem isobviously C=D/T, and that of the related problem of the retrieval of the position...