Patents by Inventor Jean-Paul Artis

Jean-Paul Artis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190285727
    Abstract: The invention relates to a method for testing the electromagnetic compatibility of a radar detector with at least one onboard pulse signal transmitter, wherein said radar detector and each onboard transmitter are part of the same platform, by means of eliminating the onboard component in the signals received by said radar detector, where the onboard component corresponds to the mix of the direct component and the reflected component onboard, said method comprising a training phase allowing the detected pulses to be divided into classes, grouping together the pulses for which at least two characteristics have a common range of values, and a phase of eliminating the pulses that belong to the selected classes.
    Type: Application
    Filed: November 8, 2017
    Publication date: September 19, 2019
    Inventors: Daniel JAHAN, Jean-Michel QUELLEC, Jean-Paul ARTIS
  • Publication number: 20190285728
    Abstract: The invention relates to a method for testing the electromagnetic compatibility of a radar detector with at least one onboard pulse signal transmitter, wherein said radar detector and each onboard transmitter are part of the same platform, by means of eliminating the onboard component in the signals received by said radar detector, where the onboard component corresponds to the mix of the direct component and the reflected component onboard, said method comprising a training phase allowing the detected pulses to be divided into classes, grouping together the pulses for which at least two characteristics have a common range of values, and a phase of eliminating, the pulses that belong to the selected classes.
    Type: Application
    Filed: November 10, 2017
    Publication date: September 19, 2019
    Inventors: Daniel JAHAN, Jean-Michel QUELLEC, Jean-Paul ARTIS, Daniel CHRISTIEN
  • Publication number: 20190277945
    Abstract: The invention relates to a method for testing the electromagnetic compatibility of a radar detector with at least one onboard pulse signal transmitter, wherein said radar detector and each onboard transmitter are part of the same platform, by means of eliminating the external echo component in the signals received by the radar detector, said method comprising a training phase allowing the detected pulses to be divided into classes, grouping together the pulses for which at least two characteristics have a common range of values, and a phase of eliminating the pulses that belong to the selected classes.
    Type: Application
    Filed: November 10, 2017
    Publication date: September 12, 2019
    Inventors: Daniel JAHAN, Jean-Michel QUELLEC, Jean-Paul ARTIS, Daniel CHRISTIEN
  • Publication number: 20190086510
    Abstract: The present invention concern a method for eliminating in a radar signal a first signal coming from an on-board radar (10), the method comprising the steps of: providing a replica of the signal emitted by the on-board radar (10), receiving a signal, the received signal being the sum of a first signal depending on the signal emitted by the on-board radar (10) and of a second signal independent of the signal emitted by the on-board radar (10), the first signal being a linear combination of elementary signals each having an amplitude coefficient and a delay relative to the signal emitted by the on-board radar (10), determining the amplitude coefficients and the delays of the elementary signals of the first signal, and eliminating, in the processed received signal, the first signal to obtain the second signal.
    Type: Application
    Filed: January 4, 2017
    Publication date: March 21, 2019
    Inventors: Jean-Michel QUELLEC, Pascal CORNIC, Jean-Paul ARTIS
  • Publication number: 20170371031
    Abstract: This method involves, for an array of at least two antennas pointing in different directions and the respective radiation patterns of which overlap one another, each antenna including at least two radiating elements so as to be able to work in a first operating mode associated with a first radiation pattern (?) and according to a second operating mode associated with a second radiation pattern (?): acquiring, for each antenna, a first signal (S?i) corresponding to the first operating mode and a second signal (S?i) corresponding to the second operating mode; determining, for each antenna, an opening half-angle (?i) of a cone of possible directions of incidence from the amplitude of the first and second signals; calculating the bearing angle (?0) and/or the elevation angle (?0) of the direction of incidence by intersection of the cones of possible directions of incidence determined for each antenna.
    Type: Application
    Filed: December 22, 2015
    Publication date: December 28, 2017
    Applicant: THALES
    Inventors: Pascal CORNIC, Jean Paul ARTIS, Christian RENARD
  • Patent number: 9664778
    Abstract: A radar and method for making a radar undetectable, comprising comprises: on a transmit antenna consisting of N individual subarrays that are non-directional in at least one plane in transmission, each being linked to a waveform generator, generating, for each of the individual subarrays, a waveform so as to make each of the individual subarrays transmit continuous or quasi-continuous signals according to a temporal and periodic pattern by using transmission patterns made up of N different subarrays and which are deduced from one another by an individual delay, on the receive antenna comprising M individual subarrays adapted to pick up the reflected signals obtained from the transmission of the N individual subarrays of the transmit antenna, performing a compression of the received signal in space and in time of the received signals.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: May 30, 2017
    Assignee: THALES
    Inventors: Pascal Cornic, Stephane Kemkemian, Jean-Paul Artis
  • Patent number: 9348011
    Abstract: A location and guidance system including a flying craft and a reception device. The flying craft includes a plurality of antennas distributed around its fuselage and emitting rearwards with rectilinear polarization, the emitted signals being specific to each antenna, the positions and the dimensions of the antennas being configured such that the body of the flying craft avoids by masking for at least one antenna the reflections of the signal emitted by this antenna off the ground or off lateral obstacles whatever the position of the flying craft. The reception device is placed substantially on a trajectory axis of the flying craft and configured to be oriented to sight the rear thereof and includes at least two single-pulse antennas operating in orthogonal planes determines a position of the flying craft by analyzing the emitted signals received by the antennas of the reception device.
    Type: Grant
    Filed: September 9, 2012
    Date of Patent: May 24, 2016
    Assignee: Thales
    Inventors: Pascal Cornic, Patrick Garrec, Jean-Paul Artis
  • Patent number: 9035824
    Abstract: A system and method of radar location comprises radar signal emission means, an emitted pulse of duration T1 and index i starting at instant T2(i); means receiving reflected radar signals; means determining correlation between reconstruction of an emitted pulse and signal received during the time interval between T2(i)+2*T1 and T2(i+1). The means determining a correlation can reconstruct a set, of at least one truncated pulse j of duration T3(j), less than T1, corresponding to the final part of said emitted pulse, said truncated pulses having increasing respective durations, determining at least one first correlated signal j by correlation of said truncated pulse j and signal received during time interval between T2(i)+T1 and T2(i)+T1+T3(j) and determining a second signal, based on first correlated signals j, by copying the time interval, of said correlated signal j, between T2(i)+T1+T3(j) and T2(i)+T1+T3(j+1), onto the time interval, of said second signal, between T2(i)+T1+T3(j) and T2(i)+T1+T3(j+1).
    Type: Grant
    Filed: February 22, 2013
    Date of Patent: May 19, 2015
    Assignee: Thales
    Inventors: Stéphane Kemkemian, Jean-Paul Artis, Jean-Michel Quellec
  • Publication number: 20150061928
    Abstract: A radar and method for making a radar undetectable, comprising comprises: on a transmit antenna consisting of N individual subarrays that are non-directional in at least one plane in transmission, each being linked to a waveform generator, generating, for each of the individual subarrays, a waveform so as to make each of the individual subarrays transmit continuous or quasi-continuous signals according to a temporal and periodic pattern by using transmission patterns made up of N different subarrays and which are deduced from one another by an individual delay, on the receive antenna comprising M individual subarrays adapted to pick up the reflected signals obtained from the transmission of the N individual subarrays of the transmit antenna, performing a compression of the received signal in space and in time of the received signals.
    Type: Application
    Filed: February 28, 2013
    Publication date: March 5, 2015
    Applicant: THALES
    Inventors: Pascal Cornic, Stephane Kemkemian, Jean-Paul Artis
  • Patent number: 8717226
    Abstract: A method for processing signals of an airborne radar includes a correction of the erroneous angle of pointing of the radar beam, comprising an evaluation of the error in the pointing angle for a constant height of the aerial transporter. For a given angle of scan, the method carries out at least two series of measurements of the power of the echoes returned following the emission of radar signals, each series being associated with a given distance-bin, the measurements being dependent on the angle of pointing of the radar antenna, formulates a vertical profile of the power of the echoes returned for each series of measurements, and then on the basis of each vertical profile, measures the pointing angle corresponding to a power of the echoes returned by the ground alone, and calculates the error in the pointing angle on the basis of the measured pointing angles.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: May 6, 2014
    Assignee: Thales
    Inventors: Nicolas Bon, Jean-Paul Artis
  • Patent number: 8659468
    Abstract: A method of correcting the reflectivity measurements performed by a radar such as a weather radar, a reflectivity measurement being associated with a resolution volume includes analyzing the current resolution volume to determine whether the plane representing the 0° C. isotherm passes through it. When the plane representing the 0° C. isotherm passes through the current resolution volume, the volume is split into two parts lying on either side of said plane, the attenuation associated with the resolution volume is determined by taking into account the contribution of each of the parts to the measured reflectivity. The reflectivity associated with the current resolution volume is corrected using the attenuation thus determined. An onboard weather radar implements the method.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: February 25, 2014
    Assignee: Thales
    Inventors: Olivier Pujol, Clémentine Costes, Jean-Paul Artis, Frédéric Mesnard, Henri Sauvageot, Alia Iassamen
  • Patent number: 8649553
    Abstract: The present invention relates to a method for predicting a trend of a meteorological phenomenon on the basis of data originating from a meteorological radar. The method includes at least the following steps: a first step of extracting gray level skeletons from images representing the data of the radar; a second step of associating characteristic data indicative of the state of the meteorological system with the gray level local extrema points; a third step of pairing each gray level skeleton of the two successive images; a fourth step of predicting future positions of the forms of the images; a fifth step of predicting trend data of the meteorological system; and a sixth step of representing the information originating from the sixth tracking step. The invention can notably be applied to the establishment of a prediction of trend of a cloud mass. The prediction of the trend of a meteorological situation may be presented to a pilot of an aircraft.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: February 11, 2014
    Assignee: Thales
    Inventors: Clémentine Costes, Jean-Paul Artis
  • Publication number: 20140028486
    Abstract: A location and guidance system including a flying craft and a reception device. The flying craft includes a plurality of antennas distributed around its fuselage and emitting rearwards with rectilinear polarization, the emitted signals being specific to each antenna, the positions and the dimensions of the antennas being configured such that the body of the flying craft avoids by masking for at least one antenna the reflections of the signal emitted by this antenna off the ground or off lateral obstacles whatever the position of the flying craft. The reception device is placed substantially on a trajectory axis of the flying craft and configured to be oriented to sight the rear thereof and includes at least two single-pulse antennas operating in orthogonal planes determines a position of the flying craft by analysing the emitted signals received by the antennas of the reception device.
    Type: Application
    Filed: September 9, 2012
    Publication date: January 30, 2014
    Applicant: THALES
    Inventors: Pascal CORNIC, Patrick GARREC, Jean-Paul ARTIS
  • Publication number: 20130234878
    Abstract: A system and method of radar location comprises radar signal emission means, an emitted pulse of duration T1 and index i starting at instant T2(i); means receiving reflected radar signals; means determining correlation between reconstruction of an emitted pulse and signal received during the time interval between T2(i)+2*T1 and T2(i+1). The means determining a correlation can reconstruct a set, of at least one truncated pulse j of duration T3(j), less than T1, corresponding to the final part of said emitted pulse, said truncated pulses having increasing respective durations, determining at least one first correlated signal j by correlation of said truncated pulse j and signal received during time interval between T2(i)+T1 and T2(i)+T1+T3(j) and determining a second signal, based on first correlated signals j, by copying the time interval, of said correlated signal j, between T2(i)+T1+T3(j) and T2(i)+T1+T3(j+1), onto the time interval, of said second signal, between T2(i)+T1+T3(j) and T2(i)+T1+T3(j+1).
    Type: Application
    Filed: February 22, 2013
    Publication date: September 12, 2013
    Applicant: THALES
    Inventors: Stéphane Kemkemian, Jean-Paul Artis, Jean-Michel Quellec
  • Patent number: 8502727
    Abstract: A method of correcting reflectivity measurements performed by a radar, such as a weather radar, includes a reflectivity measurement being associated with a resolution volume. The method includes acquiring the reflectivity measurement Zm corresponding to the current resolution volume, estimating the attenuation kc introduced by the cloud droplets, said estimating being carried out by using an average vertical profile of the cloud liquid water content, estimating the attenuation kg,O2 introduced by dioxygen, estimating the attenuation kg,H2O introduced by the water vapor, determining the total specific attenuation k of the non-detectable components taking into account the attenuation kc, the attenuation kg,O2 and the attenuation kg,H2O estimated in the preceding steps, and correcting the measured reflectivity taking into account the estimated total specific attenuation k. The method may be implemented by an onboard weather radar.
    Type: Grant
    Filed: May 28, 2011
    Date of Patent: August 6, 2013
    Assignee: THALES
    Inventors: Olivier Pujol, Clémentine Costes, Jean-Paul Artis, Frédéric Mesnard, Henri Sauvageot, Alia Iassamen
  • Publication number: 20120268312
    Abstract: A method for controlling laws of illumination of a radar antenna with adjustable gain and/or phase, suitable for sending and for receiving a radar signal, the method including obtaining a position of an obstacle located in a near field of a beam of the radar antenna according to a direction of aim of said beam, calculating the laws of illumination on sending and on receiving of said radar antenna so as to adjust the direction of the aim of the radar beam while minimizing interaction and/or effects between the beam of the radar antenna and the obstacle, and implementing the calculated laws of illumination on sending and on receiving of the radar antenna.
    Type: Application
    Filed: January 11, 2010
    Publication date: October 25, 2012
    Applicant: THALES
    Inventors: Jean-Paul Artis, Stéphane Kemkemian, Jean-Michel Quellec
  • Patent number: 8212712
    Abstract: The invention targets a method of processing a radar image obtained from a radar. It comprises an automatic evaluation of the altitude of the isotherm at zero degrees Celsius, called zero isotherm, using a processing of the reflectivity information (rf(px)) conveyed by pixels (px) forming all or part of the radar image.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: July 3, 2012
    Assignee: Thales
    Inventors: Nicolas Bon, Jean-Paul Artis, Nicolas Raguenes
  • Publication number: 20120139779
    Abstract: A method of correcting the reflectivity measurements performed by a radar such as a weather radar, a reflectivity measurement being associated with a resolution volume includes analyzing the current resolution volume to determine whether the plane representing the 0° C. isotherm passes through it. When the plane representing the 0° C. isotherm passes through the current resolution volume, the volume is split into two parts lying on either side of said plane, the attenuation associated with the resolution volume is determined by taking into account the contribution of each of the parts to the measured reflectivity. The reflectivity associated with the current resolution volume is corrected using the attenuation thus determined. An onboard weather radar implements the method.
    Type: Application
    Filed: May 31, 2011
    Publication date: June 7, 2012
    Applicant: THALES
    Inventors: Olivier PUJOL, Clémentine COSTES, Jean-Paul ARTIS, Frédéric MESNARD, Henri SAUVAGEOT, Alia IASSAMEN
  • Publication number: 20120133551
    Abstract: A method of correcting reflectivity measurements performed by a radar, such as a weather radar, includes a reflectivity measurement being associated with a resolution volume. The method includes acquiring the reflectivity measurement Zm corresponding to the current resolution volume, estimating the attenuation kc introduced by the cloud droplets, said estimating being carried out by using an average vertical profile of the cloud liquid water content, estimating the attenuation kg,O2 introduced by dioxygen, estimating the attenuation kg,H2O introduced by the water vapor, determining the total specific attenuation k of the non-detectable components taking into account the attenuation kc, the attenuation kg,O2 and the attenuation kg,H2O estimated in the preceding steps, and correcting the measured reflectivity taking into account the estimated total specific attenuation k. The method may be implemented by an onboard weather radar.
    Type: Application
    Filed: May 28, 2011
    Publication date: May 31, 2012
    Applicant: THALES
    Inventors: Olivier PUJOL, Clémentine COSTES, Jean-Paul ARTIS, Frédéric MESNARD, Henri SAUVAGEOT, Alia IASSAMEN
  • Patent number: 8138962
    Abstract: The method processes measured vertical profiles of the power of the echoes returned following a transmission of radar signals, each measured vertical profile being a function of the sweep angle of the radar beam and associated with a given pointing angle/distance box pair of the radar beam. The method generates a synthetic vertical profile of the power of the echoes returned by the ground only, and includes, for each measured vertical profile: superposition of the synthetic vertical profile on the measured vertical profile in question, for various values of the sweep angle, calculation of the error that exists between the measured vertical profile and the synthetic vertical profile, for each sweep angle value in question, and an exclusion, from the measured vertical profile, of the values for which the calculated error is less than a given threshold, in order to generate a resultant vertical profile with no ground echoes.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: March 20, 2012
    Assignee: Thales
    Inventors: Nicolas Bon, Jean-Paul Artis, Alain Becker, Maxence Marcant