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    RADAR-BASED TARGET TRACKER
    2.
    发明公开
    RADAR-BASED TARGET TRACKER 审中-公开

    公开(公告)号：US20240027608A1

    公开(公告)日：2024-01-25

    申请号：US17869572

    申请日：2022-07-20

    Applicant: Infineon Technologies Americas Corp.

    Inventor： Saiveena Kesaraju ,  Jagjit Singh Bal ,  Yue Sun

    IPC: G01S13/90 ,  G01S13/58

    CPC classification number: G01S13/9047 ,  G01S13/583

    Abstract: In an embodiment, a method includes: receiving a range-Doppler image (RDI) based on raw data from a radar sensor; performing moving target indication (MTI) filtering on the RDI to generate a first filtered radar image; performing constant false alarm rate (CFAR) detection on the first filtered radar image to generate a second filtered radar image; performing minimum variance distortionless response (MVDR) beamforming on the second filtered radar image to generate a range-angle image (RAI); performing CFAR detection on the RAI to generate a third filtered radar image; generating a point set based on the third filtered radar image; clustering targets of the point set; and tracking at least one of the clustered targets using a Kalman filter.

    ANTICOLLISION RADAR, ESPECIALLY FOR AN AIRCRAFT WHEN TAXIING, AND ANTICOLLISION SYSTEM
    3.
    发明申请
    ANTICOLLISION RADAR, ESPECIALLY FOR AN AIRCRAFT WHEN TAXIING, AND ANTICOLLISION SYSTEM 审中-公开
    反倾销雷达，特别是在采购和安装系统时的飞机

    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。

    Method and apparatus for blurring effect mitigation in ground-based radar images
    4.
    发明授权
    Method and apparatus for blurring effect mitigation in ground-based radar images 有权

    公开(公告)号：US12130356B2

    公开(公告)日：2024-10-29

    申请号：US17378578

    申请日：2021-07-16

    Applicant: IDS GEORADAR S.R.L.

    Inventor： Alberto Michelini

    IPC: G01S13/90

    CPC classification number: G01S13/9047

    Abstract: In a method for mitigating the blurring effect in a radar image (40) obtained by a ground-based radar system, thereof, a Pulse Repetition Frequency (PRF) value is selected (110) in a radar sensor unit (30) such that radial velocity measurements of the targets of an observed scenario can be made up to a maximum unambiguous velocity vmax, a radial velocity threshold is also selected (101) to discriminate between substantially stationary targets and possible fast-moving targets having radial velocities vR, j≤v* and vR, f>v*, respectively. The scenario is conventionally scanned (120) by emitting transmission signals to the targets and receiving corresponding backscattered signals (23) from which raw data (25) are extracted (130), the latter in turn are Doppler-processed (140) so as to discriminate first and second data (31, 32) related to the substantially stationary and to the fast-moving target(s), respectively, according to whether the measured radial velocities (vR) are lower than the radial velocity threshold (v*) or not, respectively; second data are removed (150) from the Doppler-processed data (27) and radar image (40) is formed from remaining first data, i.e., based on the substantially stationary targets only. The method allows reducing the occurrence of artifacts due to fast-moving objects that are systematically present or that turn up in the scenario at the moment of taking an image thereof, such as truckloads or vehicle in general, as well as crane mobile portion in scenarios like a portion of a mine. (FIG. 11).

    Compression of data employing variable mantissa size
    6.
    发明授权
    Compression of data employing variable mantissa size 有权

    公开(公告)号：US11709225B2

    公开(公告)日：2023-07-25

    申请号：US16906655

    申请日：2020-06-19

    Applicant: NXP B.V.

    Inventor： Marco Jan Gerrit Bekooij ,  Feike Guus Jansen

    IPC: G01S7/35 ,  G01S13/90 ,  G01S7/40 ,  G01S13/72

    CPC classification number: G01S7/354 ,  G01S7/4056 ,  G01S13/723 ,  G01S13/9047 ,  G01S7/356

    Abstract: Exemplary aspects are directed to or involve a radar transceiver to transmit signal and receive reflected radar signals via a communication channel. The exemplary method includes radar receiver data processing circuitry that may be used to differentiate a subset of representations of the received signals. This differentiation may be used to select signals that are more indicative of target(s) having a given range than other ones of the received signals. The received signal's representations may then be compressed by using variable-mantissa floating-point numbers having mantissa values that vary based, at least in part, on at least one strength characteristic of the respective representations.

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