公开(公告)号：US08786487B2

公开(公告)日：2014-07-22

申请号：US13247118

申请日：2011-09-28

Applicant: Stephane Kemkemian ,  Pascal Cornic ,  Patrick Garrec ,  Patrick Le Bihan ,  Myriam Nouvel-Fiani

Inventor： Stephane Kemkemian ,  Pascal Cornic ,  Patrick Garrec ,  Patrick Le Bihan ,  Myriam Nouvel-Fiani

IPC: G01S13/00 ,  G01S13/93 ,  H01Q3/26

CPC classification number: G01S13/9303 ,  G01S13/4463 ,  H01Q1/28 ,  H01Q3/2605 ,  H01Q3/267

Abstract: A radar includes a transmitting antenna and receiving antenna formed by an array of radiant elements. Antenna beams are calculated in P directions by a BFC function. Detections of a target by secondary lobes of the beams are processed by an algorithm comparing levels received in a distance-speed resolution cell, a single detection at most not being possible for each distance-speed resolution cell. Processing means use the assumption that there may probably be more than one echo with a signal-to-noise ratio that is sufficient to be detectable, for a given resolution cell of the radar, either in speed mode or in distance mode, or, alternatively, a distance-speed depending on the processing implemented; and, if there is more than one echo detectable for each resolution cell out of the plurality of beams formed by BFC, only the echo and BFC that obtain maximum power or maximum signal-to-noise ratio are/is considered valid.

Abstract translation: 雷达包括由辐射元件阵列形成的发射天线和接收天线。 通过BFC功能在P方向上计算天线波束。 通过比较在距离速度分辨率单元中接收到的等级的算法来处理由所述波束的次级波瓣检测的目标的检测，对于每个距离速度分辨率单元最多不能进行单个检测。 处理手段使用以下假设：对于雷达的给定分辨率单元，无论是在速度模式还是在距离模式下，可能存在多于一个具有足够可检测的信噪比的回波，或者，或者 ，取决于所执行的处理的距离速度; 并且如果由BFC形成的多个波束中的每个分辨率单元存在多于一个的回波，则只有获得最大功率或最大信噪比的回波和BFC被认为是有效的。

公开(公告)号：US20120081247A1

公开(公告)日：2012-04-05

申请号：US13247118

申请日：2011-09-28

Applicant: Stephane KEMKEMIAN ,  Pascal CORNIC ,  Patrick GARREC ,  Patrick LE BIHAN ,  Myriam NOUVEL-FIANI

Inventor： Stephane KEMKEMIAN ,  Pascal CORNIC ,  Patrick GARREC ,  Patrick LE BIHAN ,  Myriam NOUVEL-FIANI

IPC: G01S13/93

CPC classification number: G01S13/9303 ,  G01S13/4463 ,  H01Q1/28 ,  H01Q3/2605 ,  H01Q3/267

Abstract: A radar includes a transmitting antenna and receiving antenna formed by an array of radiant elements. Antenna beams are calculated in P directions by a BFC function. Detections of a target by secondary lobes of the beams are processed by an algorithm comparing levels received in a distance-speed resolution cell, a single detection at most not being possible for each distance-speed resolution cell. Processing means use the assumption that there may probably be more than one echo with a signal-to-noise ratio that is sufficient to be detectable, for a given resolution cell of the radar, either in speed mode or in distance mode, or, alternatively, a distance-speed depending on the processing implemented; and, if there is more than one echo detectable for each resolution cell out of the plurality of beams formed by BFC, only the echo and BFC that obtain maximum power or maximum signal-to-noise ratio are/is considered valid.

Abstract translation: 雷达包括由辐射元件阵列形成的发射天线和接收天线。 通过BFC功能在P方向上计算天线波束。 通过比较在距离速度分辨率单元中接收到的等级的算法来处理由所述波束的次级波瓣检测的目标的检测，对于每个距离速度分辨率单元最多不能进行单个检测。 处理手段使用以下假设：对于雷达的给定分辨率单元，无论是在速度模式还是在距离模式下，可能存在多于一个具有足够可检测的信噪比的回波，或者，或者 ，取决于所执行的处理的距离速度; 并且如果由BFC形成的多个波束中的每个分辨率单元存在多于一个的回波，则只有获得最大功率或最大信噪比的回波和BFC被认为是有效的。

公开(公告)号：US20100176984A1

公开(公告)日：2010-07-15

申请号：US12473880

申请日：2009-05-28

Applicant: Stephane Kemkemian ,  Stephane Guguen ,  Christian Chaure

Inventor： Stephane Kemkemian ,  Stephane Guguen ,  Christian Chaure

IPC: G01S13/00

CPC classification number: G01S7/2927 ,  G01S7/414 ,  G01S13/953 ,  Y02A90/18

Abstract: The present invention relates to a method of eliminating ground echoes for a meteorological radar. The ground echoes being received from a predetermined area by a radar, the radar illuminating, for a predetermined number R of transmission recurrences, the area over a number P of distance cells, the method includes a step for calculating a spatial statistical parameter of the cluttered echoes received by the radar in response to the recurrences over an analysis path for distance cells, and a step to compare the spatial variation level of the spatial statistical parameter along the analysis path, the echoes being considered to be ground echoes when the level of said variation is greater than a predetermined threshold.

Abstract translation: 本发明涉及一种消除气象雷达地面回波的方法。 通过雷达从预定区域接收地面回波，雷达针对传输重复的预定数量R照射距离小区数目P上的区域，该方法包括用于计算杂乱的空间统计参数的步骤 由雷达接收的响应于距离单元的分析路径的复现的回波;以及比较沿着分析路径的空间统计参数的空间变化水平的步骤，当所述的 变化大于预定阈值。

公开(公告)号：US5963163A

公开(公告)日：1999-10-05

申请号：US30012

申请日：1998-02-25

Applicant: Stephane Kemkemian ,  Philippe Lacomme

Inventor： Stephane Kemkemian ,  Philippe Lacomme

IPC: G01S13/38 ,  G01S13/34 ,  G01S13/50 ,  G01S13/58 ,  G01S13/93 ,  G01S13/42

CPC classification number: G01S13/34 ,  G01S13/584 ,  G01S13/343 ,  G01S13/345 ,  G01S2013/9321

Abstract: In a method and device for frequency-modulated continuous-wave radar detection with removal of ambiguity between the distance and the speed, the radar sends out at least alternately two parallel and discontinuous frequency modulation ramps that are slightly offset by a frequency variation (.DELTA.F), the frequency switching from one ramp to the other at the end of a given duration (Tf), the distance from a detected target being estimated as a function of the difference in phase (.DELTA..phi.) between a received signal (S.sub.1 (t)) corresponding to the first ramp and a received signal (S.sub.2 (t)) corresponding to the second ramp, the speed of the target being obtained from the estimated distance and the ambiguity straight line associated with the target. The disclosed method and device can be applied especially to radars for automobiles.

Abstract translation: 在用于频率调制的连续波雷达检测的方法和装置中，消除距离和速度之间的模糊度，雷达至少交替地发送两个被频率变化稍微偏移的平行和不连续的频率调制斜坡（DELTA F ），在给定持续时间（Tf）结束时从一个斜坡到另一个斜坡的频率切换，从被检测的目标的距离被估计为接收信号（S1（t））之间的相位差（DELTA phi）的函数 ））和对应于第二斜坡的接收信号（S2（t）），从估计的距离获得目标的速度和与目标相关联的模糊直线。 所公开的方法和装置可以特别适用于汽车的雷达。

公开(公告)号：US09513366B2

公开(公告)日：2016-12-06

申请号：US14112904

申请日：2012-04-05

Applicant: Jean-Michel Quellec ,  Stephane Kemkemian ,  Xavier Mayeux

Inventor： Jean-Michel Quellec ,  Stephane Kemkemian ,  Xavier Mayeux

IPC: G01S7/292 ,  G01S7/41 ,  G01S13/42 ,  G01S13/50 ,  G01S13/72 ,  G01S7/24

CPC classification number: G01S7/414 ,  G01S7/24 ,  G01S7/2926 ,  G01S13/426 ,  G01S13/50 ,  G01S13/726

Abstract: A method for detecting targets using a mobile radar having a rotary antenna, notably small targets buried in radar clutter, without increasing the number of false detections, includes determining pre-detections during N antenna revolutions, including determining pre-detections revolution by revolution, each pre-detection being stored in a grid of cells centered on the position that the radar occupied at the start of the current revolution, each grid cell corresponding to an azimuth range and a distance range. This step also includes, at the end of each revolution, a step of shifting all the pre-detections stored in the grid during the previous revolutions by the movement undergone by the radar during the last revolution. The method also includes determining detections, a target being detected from the moment that a set of pre-detections stored in the grid has its distances to the radar which constitute a linear progression during the N antenna revolutions.

Abstract translation: 一种用于使用具有旋转天线的移动雷达（特别是埋在雷达杂波中的小目标）来检测目标的方法，而不增加错误检测的数量，包括确定N个天线转数期间的预检测，包括确定通过旋转的预检测旋转，每个 预检测被存储在以当前旋转开始时雷达所占据的位置为中心的单元格格中，每个网格单元对应于方位范围和距离范围。 该步骤还包括，在每次革命结束时，通过在最后一次革命期间由雷达进行的移动，在先前的转动期间将所有在网格中存储的预检测的步骤。 该方法还包括确定检测，从在N个天线转数期间存储在网格中的一组预检测具有到雷达的距离构成线性进展的时刻被检测到的目标。

公开(公告)号：US08120523B2

公开(公告)日：2012-02-21

申请号：US12473880

申请日：2009-05-28

Applicant: Stephane Kemkemian ,  Stephane Guguen ,  Christian Chaure

Inventor： Stephane Kemkemian ,  Stephane Guguen ,  Christian Chaure

IPC: G01S13/95 ,  G01S7/292

CPC classification number: G01S7/2927 ,  G01S7/414 ,  G01S13/953 ,  Y02A90/18

Abstract: The present invention relates to a method of eliminating ground echoes for a meteorological radar. The ground echoes being received from a predetermined area by a radar, the radar illuminating, for a predetermined number R of transmission recurrences, the area over a number P of distance cells, the method includes a step for calculating a spatial statistical parameter of the cluttered echoes received by the radar in response to the recurrences over an analysis path for distance cells, and a step to compare the spatial variation level of the spatial statistical parameter along the analysis path, the echoes being considered to be ground echoes when the level of said variation is greater than a predetermined threshold.

Abstract translation: 本发明涉及一种消除气象雷达地面回波的方法。 通过雷达从预定区域接收地面回波，雷达针对传输重复的预定数量R照射距离小区数目P上的区域，该方法包括用于计算杂乱的空间统计参数的步骤 由雷达接收的响应于距离单元的分析路径的复现的回波;以及比较沿着分析路径的空间统计参数的空间变化水平的步骤，当所述的 变化大于预定阈值。

公开(公告)号：US20100188283A1

公开(公告)日：2010-07-29

申请号：US12664813

申请日：2008-06-13

Applicant: Stephane Kemkemian ,  Helene Thuilliez ,  Myriam Nouvel

Inventor： Stephane Kemkemian ,  Helene Thuilliez ,  Myriam Nouvel

IPC: G01S13/95

CPC classification number: G01S13/953 ,  Y02A90/18

Abstract: The present invention relates to a method for characterizing an atmospheric turbulence by representative parameters measured by a radar. The emission beam of the radar carried by an aircraft scanning the zone of the turbulence, a measured parameter being the total variance of the velocity of the turbulence σU, this total variance at a point x0 inside the turbulence is the sum of the spatial variance of the spectral moment of order 1 of the signals received by the radar Var[M1({right arrow over (x)})] and of the spatial mean of the spectral moment of order 2 of the signals received Mean[M2({right arrow over (x)})], the moments being distributed as a vector {right arrow over (x)} sweeping an atmospheric domain around the point x0. The invention applies notably in respect of meteorological radars fitted to aircraft such as airliners for example.

Abstract translation: 本发明涉及通过由雷达测量的代表性参数来表征大气湍流的方法。 由飞机携带的雷达的发射光束扫描湍流区域，测量参数是湍流速度的总方差; U，湍流内的点x0处的总方差是空间 由雷达Var [M1（{right arrow over（x）}）]和接收到的信号的2阶频谱矩的空间平均值的频谱矩1的方差的平均值[M2（{ （x）上的右箭头）]，作为向量{（x）上的向右箭头}）分布的时刻在x0点周围扫描大气域。 本发明特别适用于安装在例如飞机的飞机上的气象雷达。

公开(公告)号：US20090278729A1

公开(公告)日：2009-11-12

申请号：US12301086

申请日：2007-05-14

Applicant: Luc Bosser ,  Stephane Kemkemian ,  Myriam Nouvel

Inventor： Luc Bosser ,  Stephane Kemkemian ,  Myriam Nouvel

IPC: G01S13/08

CPC classification number: G01S13/288 ,  G01S13/951 ,  Y02A90/18

Abstract: Detecting reflectors of an emitted electromagnetic pulse, using a received signal, by time-sampling the received signal and the emitted pulse at a same sampling frequency, each received sample corresponding to a return-trip distance for the emitted pulse between its transmitter and a possible reflector. The sampled received signal is divided by the emitted pulse sampled and temporally translated into an interval of duration equal to the emitted pulse divided into L samples, producing L results of the division. A weighted summing of the L results of the division is calculated, the sets of L weights each having a support on which the weights are not zero, every subinterval of length between L/n and L being the support for at least one set of weights and no support having a length of less than L/n, wherein the sums of the weights of a set all being equal, and n is a nonzero integer such that L/n is greater than or equal to 2. Finally, determining the minimum of the summations, wherein a nonzero minimum characterizes the amplitude of the pulse reflected by a reflector located at the distance corresponding to the start of a time interval being considered.

Abstract translation: 使用接收到的信号，以相同的采样频率对接收到的信号和发射的脉冲进行时间采样来检测发射的电磁脉冲的反射器，每个接收的采样对应于发射机和可能的发射脉冲之间的发射脉冲的返回距离 反射器。 采样的接收信号被采样的发射脉冲除以时间转换为等于被分为L个采样的发射脉冲的持续时间间隔，产生分割的L个结果。 计算分割的L个结果的加权求和，每个具有权重不为零的支持的L个权重集合，L / n和L之间的每个子间隔长度是至少一组权重的支持 并且不具有小于L / n的长度的支持，其中一组的权重的和全部相等，并且n是非零整数，使得L / n大于或等于2.最后，确定最小值 其中非零最小值表征由位于与所考虑的时间间隔的开始相对应的距离处的反射器反射的脉冲的幅度。

公开(公告)号：US20140043185A1

公开(公告)日：2014-02-13

申请号：US14112904

申请日：2012-04-05

Applicant: Jean-Michel Quellec ,  Stephane Kemkemian ,  Xavier Mayeux

Inventor： Jean-Michel Quellec ,  Stephane Kemkemian ,  Xavier Mayeux

IPC: G01S7/41

CPC classification number: G01S7/414 ,  G01S7/24 ,  G01S7/2926 ,  G01S13/426 ,  G01S13/50 ,  G01S13/726

Abstract: A method for detecting targets using a mobile radar having a rotary antenna, notably small targets buried in radar clutter, without increasing the number of false detections, includes determining pre-detections during N antenna revolutions, including determining pre-detections revolution by revolution, each pre-detection being stored in a grid of cells centered on the position that the radar occupied at the start of the current revolution, each grid cell corresponding to an azimuth range and a distance range. This step also includes, at the end of each revolution, a step of shifting all the pre-detections stored in the grid during the previous revolutions by the movement undergone by the radar during the last revolution. The method also includes determining detections, a target being detected from the moment that a set of pre-detections stored in the grid has its distances to the radar which constitute a linear progression during the N antenna revolutions.

Abstract translation: 一种用于使用具有旋转天线的移动雷达（特别是埋在雷达杂波中的小目标）来检测目标的方法，而不增加错误检测的数量，包括确定N个天线转数期间的预检测，包括确定通过旋转的预检测旋转，每个 预检测被存储在以当前旋转开始时雷达所占据的位置为中心的单元格格中，每个网格单元对应于方位范围和距离范围。 该步骤还包括，在每次革命结束时，通过在最后一次革命期间由雷达进行的移动，在先前的转动期间将所有在网格中存储的预检测的步骤。 该方法还包括确定检测，从在N个天线转数期间存储在网格中的一组预检测具有到雷达的距离构成线性进展的时刻被检测到的目标。

公开(公告)号：US07924211B2

公开(公告)日：2011-04-12

申请号：US12301086

申请日：2007-05-14

Applicant: Luc Bosser ,  Stephane Kemkemian ,  Myriam Nouvel

Inventor： Luc Bosser ,  Stephane Kemkemian ,  Myriam Nouvel

IPC: G01S13/00

CPC classification number: G01S13/288 ,  G01S13/951 ,  Y02A90/18

Abstract: Detecting reflectors of an emitted electromagnetic pulse, using a received signal, by time-sampling the received signal and the emitted pulse at a same sampling frequency, each received sample corresponding to a return-trip distance for the emitted pulse between its transmitter and a possible reflector. The sampled received signal is divided by the emitted pulse sampled and temporally translated into an interval of duration equal to the emitted pulse divided into L samples, producing L results of the division. A weighted summing of the L results of the division is calculated, the sets of L weights each having a support on which the weights are not zero, every subinterval of length between L/n and L being the support for at least one set of weights and no support having a length of less than L/n, wherein the sums of the weights of a set all being equal, and n is a nonzero integer such that L/n is greater than or equal to 2. Finally, determining the minimum of the summations, wherein a nonzero minimum characterizes the amplitude of the pulse reflected by a reflector located at the distance corresponding to the start of a time interval being considered.

Abstract translation: 使用接收到的信号，以相同的采样频率对接收到的信号和发射的脉冲进行时间采样来检测发射的电磁脉冲的反射器，每个接收的采样对应于发射机和可能的发射脉冲之间的发射脉冲的返回距离 反射器。 采样的接收信号被采样的发射脉冲除以时间转换为等于被分为L个采样的发射脉冲的持续时间间隔，产生分割的L个结果。 计算分割的L个结果的加权求和，每个具有权重不为零的支持的L个权重集合，L / n和L之间的每个子间隔长度是至少一组权重的支持 并且不具有小于L / n的长度的支持，其中一组的权重的和全部相等，并且n是非零整数，使得L / n大于或等于2.最后，确定最小值 其中非零最小值表征由位于与所考虑的时间间隔的开始相对应的距离处的反射器反射的脉冲的幅度。