公开(公告)号：US20220229172A1

公开(公告)日：2022-07-21

申请号：US17576657

申请日：2022-01-14

Applicant: THALES

Inventor： Pascal CORNIC ,  Yoan VEYRAC ,  Renan LE GALL

IPC: G01S13/89 ,  H01Q19/06 ,  H01Q19/10 ,  H03F3/24 ,  H01Q13/02

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.

公开(公告)号：US20200319292A1

公开(公告)日：2020-10-08

申请号：US16836048

申请日：2020-03-31

Applicant: THALES

Inventor： Nicolas POREZ ,  Pascal CORNIC ,  Patrick GARREC

IPC: G01S7/02 ,  H01Q9/04 ,  H01Q21/06 ,  G01S7/282 ,  G01S13/30 ,  G01S13/89

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.

公开(公告)号：US20200182966A1

公开(公告)日：2020-06-11

申请号：US16703810

申请日：2019-12-04

Applicant: THALES

Inventor： Pascal CORNIC ,  Patrick GARREC ,  Nicolas POREZ

IPC: G01S7/38

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.

公开(公告)号：US20190033427A1

公开(公告)日：2019-01-31

申请号：US16074688

申请日：2017-01-30

Applicant: THALES

Inventor： Pascal CORNIC ,  Jean-Michel QUELLEC ,  Patrick LEGROS

IPC: G01S7/38 ,  G01S7/02 ,  F41H11/02 ,  H04K3/00

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.

公开(公告)号：US20180038950A1

公开(公告)日：2018-02-08

申请号：US15649374

申请日：2017-07-13

Applicant: THALES

Inventor： Pascal CORNIC ,  Yves AUDIC ,  Stéphane KEMKEMIAN

IPC: G01S13/60 ,  G01S13/93

CPC classification number: G01S13/60 ,  G01S13/46 ,  G01S13/931 ,  G01S2013/462 ,  G01S2013/9375

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.

公开(公告)号：US20170371031A1

公开(公告)日：2017-12-28

申请号：US15539021

申请日：2015-12-22

Applicant: THALES

Inventor： Pascal CORNIC ,  Jean Paul ARTIS ,  Christian RENARD

IPC: G01S13/44 ,  G01S3/02 ,  G01S7/02 ,  G01S3/32 ,  H01Q9/27 ,  H01Q1/36

CPC classification number: G01S13/44 ,  G01S3/023 ,  G01S3/32 ,  G01S7/021 ,  H01Q1/36 ,  H01Q9/27

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 (Δ) and according to a second operating mode associated with a second radiation pattern (Σ): acquiring, for each antenna, a first signal (SΔi) corresponding to the first operating mode and a second signal (SΣi) corresponding to the second operating mode; determining, for each antenna, an opening half-angle (ρi) 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 (φ0) of the direction of incidence by intersection of the cones of possible directions of incidence determined for each antenna.

公开(公告)号：US20160259048A1

公开(公告)日：2016-09-08

申请号：US15034371

申请日：2014-11-07

Applicant: THALES

Inventor： Pascal CORNIC ,  Patrick LE BIHAN ,  Yves AUDIC

IPC: G01S13/93 ,  G01S13/90

CPC classification number: G01S13/931 ,  G01S13/343 ,  G01S13/90 ,  G01S13/9047 ,  G01S2013/9335

Abstract: A radar attached laterally to airplane fuselage to detect obstacles on a collision course with a portion of the airplane facing the radar, comprises an emission antennal channel and reception antennal channels in the same plane, the form of the wave and field of angular coverage of the radar depending on the velocity of the airplane, the processing means comprising the steps: Establishing in the radar coordinate system a first distance/Doppler map allowing echoes to be separated into distance and Doppler resolution cells in a reception antennal channels; Establishing a second distance/Doppler map of smaller size by selecting a subset of distance/Doppler resolution cells corresponding to the possible positions of targets liable to collide with the wing of the airplane; Establishing new distance/Doppler maps by forming beams computationally from the subsets of distance resolution cells retained for each reception antennal channel; and Temporal integration, in each beam, of successive distance/Doppler maps.

Abstract translation: 在飞机机身侧面附近的雷达，用于检测与飞机面对雷达的部分碰撞过程中的障碍物，包括在同一平面内的发射天线通道和接收天线通道，波形和角度覆盖场的形式 雷达取决于飞机的速度，处理装置包括以下步骤：在雷达坐标系中建立允许回波被分离成接收天线通道中的距离和多普勒分辨率单元的第一距离/多普勒图; 通过选择对应于可能与飞机机翼碰撞的目标的可能位置的距离/多普勒分辨率单元的子集来建立较小尺寸的第二距离/多普勒图; 通过从为每个接收天线通道保留的距离分辨率单元的子集计算地形成光束来建立新的距离/多普勒图; 和每个波束中的时间积分，连续的距离/多普勒图。