PROCÉDÉ D'IDENTIFICATION D'UN ÉMETTEUR RADAR ET SYSTÈME D'IDENTIFICATION ASSOCIÉ

    公开(公告)号:EP4435465A1

    公开(公告)日:2024-09-25

    申请号:EP23305384.2

    申请日:2023-03-21

    IPC分类号: G01S7/02 G01S7/292

    CPC分类号: G01S7/021 G01S7/2923

    摘要: L'invention concerne un procédé d'identification d'un émetteur radar, à partir d'un ensemble d'impulsions reçues correspondantes, chacune associée à un instant d'arrivée respectif,
    le procédé étant mis en oeuvre par ordinateur et comprenant les étapes :
    - détermination d'une signature observée de l'émetteur radar à partir d'une distribution des écarts temporels entre les instants d'arrivée successifs ;
    - pour chaque classe d'émetteurs parmi une pluralité de classes d'émetteurs prédéterminées, chaque classe d'émetteurs étant associée à au moins une signature attendue, calcul d'un score de proximité entre la signature observée et chaque signature attendue associée à ladite classe d'émetteurs, chaque signature attendue étant fonction d'une distribution attendue des écarts temporels entre des instants d'émission successifs pour ladite classe d'émetteurs, et pour un taux de perte d'impulsions prédéterminé ; et
    - affectation de l'émetteur radar à la classe d'émetteurs associée à la signature attendue conduisant au meilleur score de proximité.

    SYSTEMS AND METHODS FOR PULSE DESCRIPTOR WORD GENERATION USING BLIND SOURCE SEPARATION
    4.
    发明公开
    SYSTEMS AND METHODS FOR PULSE DESCRIPTOR WORD GENERATION USING BLIND SOURCE SEPARATION 审中-公开
    用于使用盲源分离的脉冲描述符字生成的系统和方法

    公开(公告)号:EP3293540A1

    公开(公告)日:2018-03-14

    申请号:EP17179448.0

    申请日:2017-07-04

    IPC分类号: G01S7/02

    摘要: A method for generating pulse descriptor words (PDWs) including frequency and/or bandwidth data from time-varying signals 114/116 received by a sensor 103 includes filtering, at a plurality of blind source separation (BSS) modules 120, signals 124/126 derived from the time-varying signals 114/116, each BSS module 120 including a filtering subsystem 207 having a plurality of filter modules 207a/207b/207c. Each filter module 207a/207b/207c has a frequency filter coefficient ( α ) and is parameterized by a center frequency ( f ). The method also includes transmitting at least one blind source separated signal 129 from the BSS modules 120 to a PDW generation module 128 communicatively coupled to the filtering subsystem 207. The method further includes generating, using the PDW generation module 128 and based on the blind source separated signal 129, at least one PDW parameter vector signal 138 containing the frequency data. The method also includes updating, upon generating and based on the PDW parameter vector signal 138, values of α and/or f for each filter module 207a/207b/207c.

    摘要翻译: 用于从由传感器103接收的时变信号114/116生成包括频率和/或带宽数据的脉冲描述符字(PDW)的方法包括在多个盲源分离(BSS)模块120处对信号124/126 从时变信号114/116导出,每个BSS模块120包括具有多个滤波器模块207a / 207b / 207c的滤波子系统207。 每个滤波器模块207a / 207b / 207c具有频率滤波器系数(α)并由中心频率(f)参数化。 该方法还包括将至少一个盲源分离信号129从BSS模块120发送到通信地耦合到过滤子系统207的PDW生成模块128.该方法进一步包括使用PDW生成模块128并且基于盲源 分离的信号129,包含频率数据的至少一个PDW参数矢量信号138。 该方法还包括在生成并且基于PDW参数矢量信号138时更新每个滤波器模块207a / 207b / 207c的α和/或f的值。

    RADAR APPARATUS AND RADAR SIGNAL PROCESSING METHOD
    5.
    发明授权
    RADAR APPARATUS AND RADAR SIGNAL PROCESSING METHOD 有权
    雷达装置和雷达信号处理方法

    公开(公告)号:EP2821808B1

    公开(公告)日:2017-11-22

    申请号:EP13755485.3

    申请日:2013-02-27

    申请人: Tokyo Keiki Inc.

    摘要: A radar apparatus using a pulse compression technique, in which any automatic response signals are prevented from creating false radar images on the indicator screen of the radar apparatus. An antenna repeats a transmit/receive cycle at a second time interval while rotating, in which i) a non-modulated pulse is transmitted, ii) a modulated pulse is transmitted a first time interval after the transmission of the non-modulated pulse, and iii) an echo and/or an automatic response signal occurring after the pulse transmission is received. For each transmit/receive cycle, a first separated receive signal having a frequency band corresponding to that of the modulated pulse and a second separated receive signal having a frequency band corresponding to that of the non-modulated pulse are separated. An elimination process is applied to the first separated receive signal, in which respective first separated receive signals for two consecutive transmit/receive cycles are compared and any signal component having discontinuity between two consecutive transmit/receive cycles is eliminated from the first separated receive signal. A pulse compression process is applied to the first separated receive signal having undergone the elimination process. The first separated receive signal having undergone the pulse compression process is combined with the second separated receive signal.

    RADAR APPARATUS
    6.
    发明公开
    RADAR APPARATUS 审中-公开
    雷达装置

    公开(公告)号:EP3144697A1

    公开(公告)日:2017-03-22

    申请号:EP16189298.9

    申请日:2016-09-16

    摘要: A radar apparatus (100) for detecting around a ship is provided. The apparatus (100) includes an unstable area detecting module (10) configured to observe a variation in a signal level corresponding to detection data over a plurality of scans, obtain unstableness of the observed detection data, and detect unstable areas (41, 42, 43, 44, 410, 420, 430, 440) based on the unstableness, a determining module (22) configured to measure a size of each of the areas and determine the area as a small target object area (41, 43) when the size of the area is below a given threshold, a processing module (6) configured to process the detection data corresponding to the small target object area (41, 43) to be emphasized when displayed, than the detection data corresponding to the other unstable area (42, 44), and a display unit (8) configured to display the processing result.

    摘要翻译: 提供了一种用于检测船舶周围的雷达装置(100)。 该装置(100)包括不稳定区域检测模块(10),该不稳定区域检测模块(10)被配置为观察与多次扫描中的检测数据对应的信号电平的变化,获得观察到的检测数据的不稳定性并检测不稳定区域(41,42, 确定模块(22),被配置为测量每个区域的大小,并且当将所述区域确定为小目标对象区域(41,43)时,将所述区域确定为小目标对象区域(41,43) 所述区域的大小小于给定阈值时,处理模块(6)被配置为处理与显示时要被强调的小目标对象区域(41,43)相对应的检测数据,而不是与另一不稳定区域相对应的检测数据 (42,44)以及被配置为显示处理结果的显示单元(8)。

    Realization of time-domain ultra wideband ground-penetrating radar using high speed accumulation and interpolated sampling
    8.
    发明公开
    Realization of time-domain ultra wideband ground-penetrating radar using high speed accumulation and interpolated sampling 审中-公开
    快速积累和插值扫描制作时间范围超宽带探地雷达

    公开(公告)号:EP2698647A1

    公开(公告)日:2014-02-19

    申请号:EP13179213.7

    申请日:2013-08-05

    IPC分类号: G01S13/88

    CPC分类号: G01S13/885 G01S7/2923

    摘要: Embodiments of the disclosed technology use high-speed interpolated (interdigitated) sampling for the specific purpose of GPR (Ground-Penetrating RADAR). This technology solves several issues associated with high-speed sampling in GPR which included 1) dynamic range limitations, 2) regulatory compliance issues, 3) sampler core offset error, and 4) timing errors. High-speed interpolated sampling GPR is implemented using a high-speed ADC in combination with trigger logic (such as an FPGA) and a programmable delay generator. The FPGA or other trigger logic generates a series of randomly dithered trigger pulses. A variable delay generator (or "Vernier") is synchronously controlled in order to produce the fractional timing. The timing of the pulses is randomly or pseudo-randomly dithered, and the phase of the interpolation is shuffled in order to avoid producing discrete spectral lines in the radiated RADAR signal.

    摘要翻译: 内插(相互交叉)采样为GPR的特定目的(地面穿透雷达)盘技术游离缺失利用高速的实施例。 该技术解决了与在GPR高速采样,其中包括1)的动态范围的限制,2)法规遵从性问题,3)取样芯偏移误差,和4)的定时误差相关联的若干问题。 高速内插采样GPR是使用与触发逻辑组合的高速ADC(FPGA上作为测试)和可编程延迟发生器实现。 的FPGA或其他逻辑触发器基因率一系列随机抖动触发脉冲。 可变延迟发生器(或“游标”)被同步控制以产生小数定时。 该脉冲的定时是随机地或伪随机地抖动,和内插的相位以避免产生在所辐射的雷达信号的离散频谱线被混洗。

    A METHOD FOR FILTERING SEA CLUTTER IN A RADAR ECHO USING A HYDROGRAPHIC MODEL
    10.
    发明授权
    A METHOD FOR FILTERING SEA CLUTTER IN A RADAR ECHO USING A HYDROGRAPHIC MODEL 有权
    一种利用水文模型滤除雷达回波中海杂波的方法

    公开(公告)号:EP2016441B1

    公开(公告)日:2009-09-02

    申请号:EP07728551.8

    申请日:2007-04-26

    IPC分类号: G01S7/292 G01S13/93

    CPC分类号: G01S7/2923 G01S7/414

    摘要: There is disclosed a method for filtering sea clutter in a radar echo using a hydrographic model. The method comprises the following steps : determination of parameter values of the hydrographic model using the radar echo; estimation of the sea clutter corresponding to the sea surface as deduced from the hydrographic model; filtering of the estimated sea clutter from the radar echo. Application : radar detection.

    摘要翻译: 公开了一种使用水文模型在雷达回波中过滤海杂波的方法。 该方法包括以下步骤:使用雷达回波确定水文模型的参数值; 根据水文模型推导的与海面相对应的海杂波的估计; 从雷达回波中估计估计的海杂波。 应用:雷达检测。