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公开(公告)号：US11644532B2
公开(公告)日：2023-05-09
申请号：US16836048
申请日：2020-03-31
Applicant: THALES
Inventor： Nicolas Porez , Pascal Cornic , Patrick Garrec
CPC classification number: G01S7/025 , G01S7/282 , G01S13/30 , G01S13/89 , H01Q9/0407 , H01Q21/065
Abstract: Method and device for radar transmission and reception by dynamic change of polarization notably for the implementation of interleaved radar modes are provided. A radar transmission-reception method and a device for implementing this method, the method alternatively implementing two modes of operation, a short range mode exploiting short pulses and a long range mode exploiting modulated long pulses, the method consisting, for each mode, in: producing two synchronous radiofrequency (RF) transmission signals having between them a phase-shift θ of controllable given value; radiating two radiofrequency waves, each corresponding to one of the transmission RF signals produced, by means of two colocated radiating sources each having a given polarization axis; handling the reception of the backscattered radiofrequency signals picked up by each of the radiating sources, and delivering two radiofrequency (RF) reception signals each corresponding to a radiofrequency signal picked up by one of the radiating sources, a phase-shift θ′ being applied between the two signals delivered, θ′ being able to be determined as being equal to θ.
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公开(公告)号：US11568330B2
公开(公告)日：2023-01-31
申请号：US16717666
申请日：2019-12-17
Applicant: THALES
Inventor： Thierry Mazeau , Alain Larroque , Patrick Garrec
Abstract: The invention relates to a method and a device for recording digital data representative of an operating variable of an observed system, the digital data representative of said variable being obtained in the form of samples, the method comprising a data recording over time. The method receiving successive samples representative of said observed variable, and for a current sample, for at least two observation windows of different sizes, each observation window including a number, equal to the size of said window, of successive samples received before the moment in time corresponding to the current sample, calculating an average value per observation window, calculating a difference between the current sample and each of said average values, comparing each difference, in absolute value, to a predetermined threshold value associated with said observation window, and in case of excess, triggering a recording of the current sample in a non-volatile memory.
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公开(公告)号：US10992061B2
公开(公告)日：2021-04-27
申请号：US16478406
申请日：2018-02-01
Applicant: THALES , UNIVERSITE DE BORDEAUX , INSTITUT POLYTECHNIQUE DE BORDEAUX , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Inventor： Patrick Garrec , Anthony Ghiotto , Gwenaël Morvan
Abstract: An elementary antenna includes a planar radiating device comprising a substantially plane radiating element and a transmit and/or receive circuit comprising at least one amplification chain of a first type and at least one amplification chain of a second type, each amplification chain of the first type being coupled to at least one excitation point of a first set of at least one excitation point of the radiating element and each amplification chain of the second type being coupled to at least one point of a second set of points, the excitation points of the first and second set being distinct and the amplification chain of the first type being different from the amplification chain of the second type so that they exhibit different amplification properties.
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公开(公告)号：US10775496B2
公开(公告)日：2020-09-15
申请号：US15933252
申请日：2018-03-22
Applicant: THALES
Inventor： Pascal Cornic , Patrick Garrec , Patrick Le Bihan
Abstract: A method comprises at least: a first radar processing for locating and estimating the trajectory of a target on the basis of measurements of radial distances, of Doppler frequency and of angle of azimuth and of elevation of the target arising from a radar signal emitted towards the target; a second radar processing of location and of trajectory of the target along a vertical axis, by applying the principle of the inverse synthetic antenna; the disparity between the given trajectory and the trajectory estimated by the first processing, projected on a horizontal plane, and the disparity between the given trajectory and the trajectory estimated by the second processing according to the vertical axis being used to control the direction of displacement of the target.
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公开(公告)号：US10571549B2
公开(公告)日：2020-02-25
申请号：US15799446
申请日：2017-10-31
Applicant: THALES
Inventor： Pascal Cornic , Patrick Garrec , Richard Montigny
Abstract: A receiving device comprises an analogue reception filter designed for a given frequency band included in the entire operating band of radar, the device further comprising a digital filter able to separate the received signals depending on their frequency, one portion of the frequency band of the given frequency band allocated to the radar reception function and another portion allocated to an RESM reception function.
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Patent Agency Ranking
公开(公告)号：US11320531B2
公开(公告)日：2022-05-03
申请号：US16716184
申请日：2019-12-16
Applicant: THALES
Inventor： Patrick Garrec , Rodolphe Cottron , Yoan Veyrac
Abstract: A method for active neutralization of the effect of the vibrations of a rotary-wing aircraft for a monostatic Doppler radar includes a first step of measuring and temporally extrapolating the vibration modes at the transmitting-receiving radar antenna, using a 3-axis vibration sensor, fixed to the antenna and near the phase centre of the antenna; then a second step of estimating the expected movements of the transmitting-receiving antenna or of the first transmitting antenna and the second receiving antenna; then a third step of compensating the expected movements of the transmission radar antenna in the transmission chain or in the reception chain of the radar transmitter, wherein the projection of the movement vector of the phase centre O on an aiming direction is calculated to determine the value of the compensation phase shift to be applied.
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公开(公告)号：US11137492B2
公开(公告)日：2021-10-05
申请号：US16691005
申请日：2019-11-21
Applicant: THALES
Inventor： Yoan Veyrac , Patrick Garrec , Pascal Cornic
Abstract: The method includes a step of forming, with a radar, a number N of beams of equal angular width that irradiate a runway and a portion of the surroundings of the runway; a step of dividing the zone irradiated by the beams into distance-angle boxes, the beams delineating the boxes anglewise; a step of taking measurements of backscattered power received from distance-angle boxes, the measurements being carried out for a set of pairs of boxes, a pair being composed of two boxes of same distance one of which, called the right box, crosses the right edge (3D) of the runway, and the other of which, called the left box, crosses the left edge (3G); a step of computing, for each pair, the difference in backscattered power between the right box and the left box, the aircraft being aligned with the axis when the difference is zero for at least two pairs of distance-angle boxes.
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公开(公告)号：US09667197B2
公开(公告)日：2017-05-30
申请号：US14764148
申请日：2014-02-27
Applicant: THALES , INSTITUT POLYTECHNIQUE DE BORDEAUX , UNIVERSITE DE BORDEAUX , CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
Inventor： Patrick Garrec , Eric Kerherve , Pascal Cornic , Stéphane Kemkemian , Nejdat Demirel , Yves Mancuso
CPC classification number: H03F1/0288 , H03F3/19 , H03F3/211 , H03F3/45089 , H03F3/72 , H03F2200/301 , H03F2200/537 , H03F2200/541 , H03F2203/21109 , H03F2203/45731
Abstract: An input signal amplification system comprises at least two different means of amplifying input signals in order to obtain amplified signals. It also comprises at least one means of summing amplified signals, and dynamic means of activating or deactivating one or more of the amplifying means based on input signals.
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公开(公告)号：US11686812B2
公开(公告)日：2023-06-27
申请号：US16703810
申请日：2019-12-04
Applicant: THALES
Inventor： Pascal Cornic , Patrick Garrec , Nicolas Porez
Abstract: A method for confusing the electronic signature of a signal transmitted by a radar, includes the generation by the radar of at least one pulse, wherein the method comprises a step of modulation, in the pulse, of the polarization of the transmitted signal, according to two orthogonal or opposite polarizations, the modulation of the polarization being performed according to a predetermined modulation code.
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10.发明授权公开(公告)号：US11604270B2
公开(公告)日：2023-03-14
申请号：US16712864
申请日：2019-12-12
Applicant: THALES
Inventor： Thierry Mazeau , Patrick Garrec
Abstract: A radar system configured to determine radar-ground distance measurements. The radar system includes transmission and reception means configured to transmit two radiofrequency signals towards the ground and to receive the signals obtained by the reflection of the two transmitted signals by the ground and computation means configured to determine the frequential representations of the transmitted signals and of the received signals and determine a frequential quantity as a function of the frequential representations. The radar system is wherein the computation means are configured to sample the frequential quantity over a determined number of samples, which provides a sampled signal; determine a number of frequency measurements as a function of a constant distance measurement accuracy value; determine frequency measurements by applying to the sampled signal a spectral decomposition by fast Fourier transform using a decimation of the sampled signal in a ratio dependent on the distance measurement accuracy value, and determine a distance measurement corresponding to each frequency measurement.
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