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公开(公告)号：US20210184361A1
公开(公告)日：2021-06-17
申请号：US17125757
申请日：2020-12-17
Applicant: THALES , UNIVERSITE DE BORDEAUX , INSTITUT POLYTECHNIQUE DE BORDEAUX , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Inventor： Anthony GHIOTTO , Ryan RAIMOND , Thierry MAZEAU
Abstract: Leaky wave antenna of AFSIW structure comprising a top substrate layer and a bottom substrate layer sandwiching an intermediate layer comprising a longitudinal aperture of length L defining a waveguide and whose width W1 is delimited by two conductive lateral walls. The inner faces of the conductive lateral walls are coated with a layer of dielectric material of thickness w(z). The top layer has a longitudinal radiating slot of width Wf (z) facing the longitudinal aperture of the intermediate layer. The thickness w(z) of the dielectric coating varies along the longitudinal axis z according to a given law, defined so as to obtain variations along the axis z of the amplitude Alpha(z) and of the phase Beta(z) of the leaky wave of the guide.
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公开(公告)号：US20200350674A1
公开(公告)日：2020-11-05
申请号：US16760651
申请日：2018-09-07
Applicant: THALES
Inventor： Thierry MAZEAU , Daniel JAHAN , Stéphane FORMONT , Loïc MENAGER
Abstract: A stimulation device notably for testing radio reception devices is provided. It includes a signal generator delivering an amplitude-phase law for beam-forming purposes, transmitted in the form of a composite laser beam which illuminates a matrix of photodiodes of an emission subassembly with active modules separate from the generator, each wavelength of the beam carrying one of the signals defining the amplitude-phase law, intended for an active module. The device comprises means for measuring the orientation of the composite laser beam relative to the matrix of photodiodes of the emission subassembly and the distance traveled by the beam thereto, and correcting the phase law generated by the signal generator so as to neutralize the stray phase-shifts induced by these parameters on the signals transmitted to the emission subassembly.
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公开(公告)号：US20220413128A1
公开(公告)日：2022-12-29
申请号：US17779469
申请日：2020-11-26
Applicant: THALES
Inventor： Thierry MAZEAU , Charline CASTAING , Patrick GARREC
Abstract: The invention relates to a guidance system for leading an aircraft to a reference point, characterised in that it comprises: An active beacon capable of emitting a first electromagnetic signal in a first emission cone, defined by an apex coinciding with the reference point, a first beam angle and a first axis corresponding to an emission direction; and a multi-beam radar, installed on board the aircraft, operating in reception mode and capable of performing deviation measurements on a signal received from the active beacon, the multi-beam radar comprising an antenna adapted for receiving in at least two spatially separate reception cones.
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公开(公告)号：US20200041642A1
公开(公告)日：2020-02-06
申请号：US16528219
申请日：2019-07-31
Applicant: THALES
Inventor： Thierry MAZEAU , Patrick GARREC
Abstract: The method carries out a measurement of the distance from the ground of an aircraft by undertaking the emission of waveforms making it possible to obtain, after demodulation, of the signals received in return and sampling of the demodulated signals at a frequency Féch, two signals E0*(t) and E1*(t), taking the form of two frequency ramps, of respective slopes K0 and K1, of respective passbands B0 and B1 and of respective durations TE0 and TE1, the N-point FFT spectral analysis of which is carried out. The values of the durations TE0 and TE1 as well as those of the passbands B0 and B1, are defined in such a way as to be able to determine, on the basis of the spectra of the signals E0*(t) and E1*(t), a measurement of non-ambiguous distance d1 covering the maximum distance dmax to be instrumented and an ambiguous distance d0 exhibiting the desired distance resolution. The distance d to be measured being determined by combining these two measurements.
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