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公开(公告)号：US12204012B2
公开(公告)日：2025-01-21
申请号：US17525851
申请日：2021-11-12
Applicant: THALES
Inventor： Yoan Veyrac , Pascal Cornic , Renan Le Gall , Gonzague Bertin De La Hautiere
Abstract: The invention relates to a MIMO imaging radar system. The system comprises transmission channels (Ve1, VeM), reception channels (Vr1, VrN), and co-located radiating elements (ERe1, EReM, ERr1, ERrN) forming a two-dimensional antenna array. Each radiating element (ERe1, EReM, ERr1, ERrN) has a predefined instantaneous field of coverage. Each radiating element is formed by a plurality of p radiating sub-elements (SeElt1, SsEltp) distributed in at least one of the two dimensions of the antenna array. The radar comprises a plurality of electronic steering modules (MDe1, . . . , MDrN). Each electronic steering module is connected to one radiating element. Each steering module is configured to apply a steering command (Cmd) between all the radiating sub-elements (SeElt1, SsEltp) of a given radiating element. The steering command (Cmd) is identical from one radiating element to the next, so as to move the field of coverage of each radiating element in the same direction.
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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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公开(公告)号：US10585183B2
公开(公告)日：2020-03-10
申请号：US15649374
申请日：2017-07-13
Applicant: THALES
Inventor： Pascal Cornic , Yves Audic , Stéphane Kemkemian
IPC: G01S13/60 , G01S13/46 , G01S13/93 , G01S13/931 , G01S13/00
Abstract: Radar equipped with a transmission antenna array and with a reception antenna array is provided, the measurement of the height h2 is obtained by estimating the frequency of at least one time-dependent amplitude modulation produced on the reception antenna array, the modulation generated by the interference of the signals received directly from the target and the signals received after reflection on the ground, on the basis of the signals transmitted by the transmission antenna array.
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公开(公告)号：US11249166B2
公开(公告)日：2022-02-15
申请号：US16450645
申请日：2019-06-24
Applicant: THALES
Inventor： Pascal Cornic , Nicolas Porez , Patrick Garrec
Abstract: The invention relates to a method for determining an angle of arrival of a received radioelectric signal implemented by a receiving antenna system including either one rotating antenna having at least two receiving channels, or two rotating antennas with a same speed each having a receiving channel, and having different antenna diagrams. The method includes calculating and storing a series of ambiguous angle error measurement values obtained from receiving amplitude values of a radioelectric signal coming from an emitting source on said first and second receiving channels, calculating a convolution function on said angular range tween said series of ambiguous angle error measurement values and a series of theoretical angle error measurement values of said receiving channels previously calculated and stored, and determining an angle of arrival of said received radioelectric signal as a function of an estimate of a maximum of said calculated convolution function.
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公开(公告)号：US09784830B2
公开(公告)日：2017-10-10
申请号：US14175620
申请日：2014-02-07
Applicant: THALES
Inventor： Patrick Garrec , Pascal Cornic , Régis Levaufre
CPC classification number: G01S13/74 , G01S7/4052 , G01S13/751 , G01S13/872 , G01S13/913 , G01S2007/4082
Abstract: A transponder, able to equip a cooperative target facing a Doppler radar, includes at least one receiving antenna able to receive a signal transmitted by said radar and a transmitting antenna able to retransmit a signal. The signal received by the receiving antenna is amplitude-modulated before being retransmitted by the transmitting antenna to produce a variation of the radar cross-section of the target, the variation triggering a frequency shift between the signal transmitted and the signal received by the radar comparable to a Doppler echo. The transponder applies notably to the field of radars, more particularly for collaborative systems also operating at low velocity or nil velocity. It applies for example to assisted take-off, landing and deck-landing of drones, in particular rotary-wing drones, as well as manned helicopters.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09488720B2
公开(公告)日：2016-11-08
申请号：US14389508
申请日：2013-03-26
Applicant: THALES
Inventor： Pascal Cornic , Patrick Le Bihan , Stephane Kemkemian
Abstract: An active and passive detection device is provided with a low probability of interception having a fixed antenna structure, transmission means and reception means. The antenna structure is formed by a plurality of radiating elements grouped into identical subnetworks and comprises at least one transmission subnetwork and at least three reception subnetworks. The transmission means are capable of generating an unfocused continuous waveform having low peak power in one plane and of transmitting said waveform. The reception means are capable of detecting the targets following the formation of a plurality of directional beams on the basis of the signals received on the reception subnetworks. The reception means are likewise capable of implementing the interception of radar signals from other radar sources using cross correlation processing between the signals received on at least three reception subnetworks.
Abstract translation: 主动和被动检测装置被提供具有固定天线结构，传输装置和接收装置的低拦截概率。 天线结构由分组成相同子网的多个辐射元件形成，并且包括至少一个传输子网和至少三个接收子网。 发送装置能够产生在一个平面中具有低峰值功率并且发送所述波形的未聚焦连续波形。 接收装置能够基于在接收子网上接收的信号来检测形成多个定向波束之后的目标。 接收装置同样能够使用在至少三个接收子网上接收的信号之间的互相关处理从其他雷达源截取雷达信号。
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公开(公告)号：US12241967B2
公开(公告)日：2025-03-04
申请号：US17576657
申请日：2022-01-14
Applicant: THALES
Inventor： Pascal Cornic , Yoan Veyrac , Renan Le Gall
Abstract: An active antenna radar able to produce an image with high angular resolution over a wide angular coverage, the antenna includes a number N of transmission channels and a number M of reception channels, each transmission channel and reception channel comprising an elementary antenna: each elementary antenna comprises a lens or a reflector associated with an array of elementary sources, the sources being configured to illuminate the lens or the reflector and at least the apertures being substantially arranged in the focal plane of the lens or centred around the focal point of the reflector; each elementary transmission or reception source being able to form or receive, respectively, a beam focused in a given direction, the directions being different from one transmission or reception source to another of one and the same elementary antenna; each elementary transmission or reception source being connected to a power amplifier or to a low-noise amplifier, respectively, and to switching means allowing the source to be supplied or not to be supplied with power or the signals from the source to be received or not to be received, respectively.
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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：US10852391B2
公开(公告)日：2020-12-01
申请号：US16074688
申请日：2017-01-30
Applicant: THALES
Inventor： Pascal Cornic , Jean-Michel Quellec , Patrick Legros
Abstract: A method for jamming airborne SAR radar implemented by a jamming device includes at least two cooperating units surrounding an area on the ground to be protected, at least two units providing a radar-detection function and at least one unit providing a radar-jamming function, each unit being interlinked by a two-way data link and being synchronized by a common clock, the method comprises a step of identifying the signals received and whether the received signals correspond to SAR signals; a step of characterizing the received SAR signal over a short duration; a step of computing a filter adapted to the signal; a step of carrying out pulse compression of the signal; a step of iteratively periodically characterizing the signal over a long duration; a step of computing the jamming signals to be transmitted; a step of transmitting the jamming signals.
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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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