Abstract: A method for processing telemetry data for estimating a wind speed. The method includes a hybridization by temporal combination, and/or by weighting, and/or by averaged projection.

Abstract: An optical device including an acousto-optic modulator (AOM), a laser, an upstream optical fibre extending between the laser and the AOM, a downstream optical fibre located downstream of the AOM and a reflector connected to the fibre downstream of the AOM. The optical device including the upstream fibre is a polarisation-maintaining optical fibre, and/or the downstream fibre is arranged so that a transit time of the optical beam through said downstream fibre from the AOM to the reflecting means is nonzero and shorter than or equal to half an open duration of the AOM, and/or the AOM includes a crystal in which the entrance/exit faces are planar and are at a nonzero angle to each other, and/or at least one of the two entrance/exit faces is at a nonzero angle to a direction of propagation of the acoustic wave in the crystal.

Abstract: A method is provided for determining the flow of a fluid in a volume of interest, including steps of remotely measuring, at a plurality of measurement points distributed along at least three axes of measurement having different spatial orientations passing through the volume of interest, the radial velocity of the fluid in the vicinity of the measurement points, and for calculating the velocity of the fluid at a plurality of calculation points distributed in a grid in the volume of interest, wherein the calculation of the velocity of the fluid includes the use of a mechanical behavior model of the fluid. A device is disclosed for implementing the method.