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公开(公告)号：US10054606B2
公开(公告)日：2018-08-21
申请号：US14652770
申请日：2013-12-20
Applicant: THALES
Inventor： Philippe Rondeau , Jean-Pierre Schlotterbeck , Xavier Lacondemine
CPC classification number: G01P5/26 , B64D43/02 , G01F1/661 , G01S17/58 , G01S17/88 , G01S17/95 , Y02A90/19
Abstract: A method for determining the speed vector ({right arrow over (Vd)}), with respect to the surrounding air, of a rotary wing aircraft (HL) equipped with a beam scanning Doppler laser anemometry device for measuring (Step1) a set of projections (Vm) of said speed vector ({right arrow over (Vd)}) in at least four non-coplanar directions, comprising the following steps: detecting (Step2) any anomaly of at least one element from the set of measured projections (Vm), from a comparison with respect to a first threshold (S1), of a deviation between the measurements (Vm) and the measurements (Vp) predicted from a predetermined model depending on values of beam scanning parameters of the anemometry device; and reducing (Step3) the effect of a detected anomaly by invalidating measurements corresponding to said anomaly and computing the components of the speed vector from valid measurements.
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公开(公告)号：US20160170023A1
公开(公告)日：2016-06-16
申请号：US14734989
申请日：2015-06-09
Applicant: THALES
Inventor： Philippe Rondeau , Jean-Pierre Schlotterbeck , Xavier Lacondemine
IPC: G01S17/58 , H04B10/516 , G01S7/491 , G01P5/26 , H04B10/079 , H04B10/50
CPC classification number: G01S17/58 , G01P5/26 , G01S7/4917 , H04B10/0795 , H04B10/503 , H04B10/5161
Abstract: The general field of the invention is that of Doppler lidars intended to measure the speed of a target. The lidar according to the invention comprises:First means for modulating the optical frequency of the transmission signal, said frequency being the sum of a constant frequency and of a variable frequency of determined amplitude modulated by a periodic temporal function;Second means for computing the spectrum of the measured heterodyne signal and for creating two measurement spectra obtained by shifting the spectrum of the heterodyne signal by a positive and negative frequency value, said realignment frequency equal to the difference between the instantaneous frequency of the transmission signal and the frequency of a signal transmitted at a time shifted by the round-trip travel time between the lidar and the target;Third means for comparing the two measurement spectra, the difference in amplitude between the two spectra at the Doppler frequency determining the direction of the speed of the target.
Abstract translation: 本发明的一般领域是旨在测量目标速度的多普勒激光雷达。 根据本发明的激光雷达包括：用于调制传输信号的光频率的第一装置，所述频率是由周期性时间函数调制的确定幅度的恒定频率和可变频率之和; 第二装置，用于计算所测量的外差信号的频谱，并产生通过将外差信号的频谱偏移正和负频率值获得的两个测量频谱，所述重新调整频率等于发射信号的瞬时频率与 在激光雷达和目标之间的往返行进时间偏移的时间发送的信号的频率; 用于比较两个测量光谱的第三手段，在多普勒频率下的两个光谱之间的幅度差确定目标速度的方向。
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公开(公告)号：US20150025835A1
公开(公告)日：2015-01-22
申请号：US14329734
申请日：2014-07-11
Applicant: THALES
Inventor： Gregory Baral-Baron , Xavier Lacondemine , Elisabeth Lahalle , Gilles Fleury
CPC classification number: G01S17/88 , G01P3/36 , G01S7/4861 , G01S17/58
Abstract: The invention relates to the measurement of the speed of an aircraft by Doppler laser anemometry, the aircraft being equipped with a LiDAR using coherent detection. According to the invention, the measurement method comprises the following steps: emission by the lidar of a laser beam, reception by the lidar of a signal backscattered by particles present in the path of the beam emitted and generation of the corresponding heterodyne signal, processing of the heterodyne signal by the processor unit which comprises the following sub-steps: time-frequency analysis of the heterodyne signal, estimation of the speed of the aircraft based on the time-frequency analysis, wherein the step for processing the heterodyne signal comprises a statistical test sub-step with: estimation of a statistical function from the TFR of the heterodyne signal, estimation of a reference statistical function from the TFR of the noise associated with the heterodyne signal, calculation of a difference between the statistical function from the TFR of the heterodyne signal and the reference statistical function from the TFR of the noise.
Abstract translation: 本发明涉及通过多普勒激光测风法测量飞行器的速度，该飞机配备使用相干检测的LiDAR。 根据本发明，测量方法包括以下步骤：通过激光束的激光雷达发射，由激光雷达接收由发射的光束路径中存在的粒子反向散射的信号，并产生相应的外差信号;处理 所述处理器单元的所述外差信号包括以下子步骤：基于所述时间 - 频率分析对所述外差信号进行时间 - 频率分析，估计所述飞行器的速度，其中所述用于处理所述外差信号的步骤包括统计 测试子步骤：从外差信号的TFR估计统计函数，从与外差信号相关的噪声的TFR估计参考统计学函数，计算来自TFR的统计学函数之间的差异 外差信号和来自噪声的TFR的参考统计功能。
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4.发明申请DEVICE AND METHOD FOR DETERMINING THE PRESENCE OF DAMAGE OR DIRT IN A DOPPLER LASER ANEMOMETRY PROBE PORTHOLE 审中-公开用于确定多普勒激光雷达探测器中破损或破坏存在的装置和方法公开(公告)号：US20150146199A1
公开(公告)日：2015-05-28
申请号：US14546203
申请日：2014-11-18
Applicant: THALES
Inventor： Philippe Rondeau , Jean-Pierre Schlotterbeck , Xavier Lacondemine
CPC classification number: G01N21/88 , G01M11/02 , G01N21/255 , G01N21/94 , G01N2201/08 , G01N2201/10 , G01S7/497 , G01S2007/4975
Abstract: A device for determining the presence of damage or dirt on a Doppler laser anemometry probe (2) porthole (1) comprising means (6) for implementing a continuous angular scan of the laser beam, means (7) for determining a current spectral component of the output signal of the probe (2) corresponding to a parasitic signal due to parasitic reflections on the path common to the emitted wave and the wave backscattered by the medium during spectral analysis of the anemometric signal, and means (8) for comparing said current spectral component of the current parasitic signal with a reference spectral component of the reference parasitic signal.
Abstract translation: 一种用于确定在多普勒激光测风探针（2）舷窗（1）上存在损伤或污垢的装置，包括用于实现激光束的连续角扫描的装置（6），用于确定当前光谱分量的装置（7） 以及用于比较所述电流的装置（8），所述探针（2）的输出信号对应于由于所述发射波共同的路径上的寄生反射引起的寄生信号和由所述介质在所述风向信号的频谱分析期间反向散射的波; 具有参考寄生信号的参考频谱分量的当前寄生信号的频谱分量。
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5.发明授权Method for estimating the transverse component of the velocity of the air in a doppler LiDAR measurement 有权用于估计多普勒LiDAR测量中空气速度的横向分量的方法公开(公告)号：US08976342B2
公开(公告)日：2015-03-10
申请号：US14052588
申请日：2013-10-11
Applicant: Thales
CPC classification number: G01S17/95 , G01P5/26 , G01S7/484 , G01S7/4861 , G01S7/487 , G01S17/58 , G01S17/88 , Y02A90/19
Abstract: A method for estimating the transverse component Vtrans of the velocity of the air comprises the following steps: emitting a focused laser beam; acquiring an electrical signal resulting from the transit of a particle across the beam at a point of transit; analyzing the signal so as to obtain a spectrogram revealing an elongate mark representative of the transit; estimating the duration of traversal of the laser beam by the particle and the slope of the mark; deducing from the duration and from the slope the distance between the point of traversal of the beam and the focusing point; determining the radius of the beam at the point of transit; deducing the transverse component from the radius and from the duration.
Abstract translation: 用于估计空气速度的横向分量Vtrans的方法包括以下步骤：发射聚焦激光束; 获取由在过境点处的粒子穿过射束的过程而产生的电信号; 分析信号，以获得显示代表运输的细长标记的频谱图; 估计粒子穿过激光束的持续时间和标记的斜率; 从持续时间和斜率推导出光束穿透点与聚焦点之间的距离; 确定在过境点的梁的半径; 从半径和持续时间推导出横向分量。
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Patent Agency Ranking
公开(公告)号：US10101456B2
公开(公告)日：2018-10-16
申请号：US14329734
申请日：2014-07-11
Applicant: THALES
Inventor： Gregory Baral-Baron , Xavier Lacondemine , Elisabeth Lahalle , Gilles Fleury
Abstract: The invention relates to the measurement of the speed of an aircraft by Doppler laser anemometry, the aircraft being equipped with a LiDAR using coherent detection. According to the invention, the measurement method comprises the following steps: emission by the lidar of a laser beam, reception by the lidar of a signal backscattered by particles present in the path of the beam emitted and generation of the corresponding heterodyne signal, processing of the heterodyne signal by the processor unit which comprises the following sub-steps: time-frequency analysis of the heterodyne signal, estimation of the speed of the aircraft based on the time-frequency analysis, wherein the step for processing the heterodyne signal comprises a statistical test sub-step with: estimation of a statistical function from the TFR of the heterodyne signal, estimation of a reference statistical function from the TFR of the noise associated with the heterodyne signal, calculation of a difference between the statistical function from the TFR of the heterodyne signal and the reference statistical function from the TFR of the noise.
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7.发明申请METHOD FOR DETERMINING THE SPEED OF A ROTOCRAFT RELATIVE TO THE SURROUNDING AIR 审中-公开确定与周边空气相关的ROTOCRAFT速度的方法公开(公告)号：US20150323559A1
公开(公告)日：2015-11-12
申请号：US14652770
申请日：2013-12-20
Applicant: THALES
Inventor： Philippe Rondeau , Jean-Pierre Schlotterbeck , Xavier Lacondemine
CPC classification number: G01P5/26 , B64D43/02 , G01F1/661 , G01S17/58 , G01S17/88 , G01S17/95 , Y02A90/19
Abstract: A method for determining the speed vector ({right arrow over (Vd)}), with respect to the surrounding air, of a rotary wing aircraft (HL) equipped with a beam scanning Doppler laser anemometry device for measuring (Step1) a set of projections (Vm) of said speed vector ({right arrow over (Vd)}) in at least four non-coplanar directions, comprising the following steps: detecting (Step2) any anomaly of at least one element from the set of measured projections (Vm), from a comparison with respect to a first threshold (S1), of a deviation between the measurements (Vm) and the measurements (Vp) predicted from a predetermined model depending on values of beam scanning parameters of the anemometry device; and reducing (Step3) the effect of a detected anomaly by invalidating measurements corresponding to said anomaly and computing the components of the speed vector from valid measurements.
Abstract translation: 一种用于测量装备有用于测量（1）的波束扫描多普勒激光测风装置的旋翼飞机（HL）的相对于周围空气的速度矢量（{右箭头（Vd）}）的方法 包括以下步骤：检测（步骤2）从所测量的投影组中的至少一个元素的任何异常（步骤2），所述速度矢量的投影（Vm）（{右箭头（Vd）}）在至少四个非共面方向上 根据与风速测量装置的波束扫描参数的值相对于从预定模型预测的测量值（Vm）和测量值（Vp）之间的偏差相对于第一阈值（S1）的比较; 并且通过使与所述异常相对应的测量值无效并且从有效测量计算速度矢量的分量来减少（步骤3）检测到的异常的影响。
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公开(公告)号：US09778362B2
公开(公告)日：2017-10-03
申请号：US14734989
申请日：2015-06-09
Applicant: THALES
Inventor： Philippe Rondeau , Jean-Pierre Schlotterbeck , Xavier Lacondemine
IPC: G01S17/58 , G01P5/26 , G01S7/491 , H04B10/079 , H04B10/50 , H04B10/516
CPC classification number: G01S17/58 , G01P5/26 , G01S7/4917 , H04B10/0795 , H04B10/503 , H04B10/5161
Abstract: The general field of the invention is that of Doppler lidars intended to measure the speed of a target. The lidar according to the invention comprises:First means for modulating the optical frequency of the transmission signal, said frequency being the sum of a constant frequency and of a variable frequency of determined amplitude modulated by a periodic temporal function;Second means for computing the spectrum of the measured heterodyne signal and for creating two measurement spectra obtained by shifting the spectrum of the heterodyne signal by a positive and negative frequency value, said realignment frequency equal to the difference between the instantaneous frequency of the transmission signal and the frequency of a signal transmitted at a time shifted by the round-trip travel time between the lidar and the target;Third means for comparing the two measurement spectra, the difference in amplitude between the two spectra at the Doppler frequency determining the direction of the speed of the target.
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公开(公告)号：US09435890B2
公开(公告)日：2016-09-06
申请号：US13852744
申请日：2013-03-28
Applicant: THALES
Inventor： Xavier Lacondemine , Nicolas Martin , Jean-Pierre Schlotterbeck , Gregory Baral-Baron
Abstract: An anemometry system comprising a laser source supplying an incident beam that is backscattered by passing through the incident beam mixing means for mixing the backscattered beam and a reference beam, creating an interferometry wave conversion means, converting the interferometry wave into an electrical signal proportional to the power of said wave first determination means, for determining a time-frequency diagram of said electrical signal. The system also comprises second determination means for determining spots of said diagram, each spot being a set of connected points of said diagram, having exceeded a detection threshold computation means for computing an average of the frequency, a duration and a slope characterizing the trend of the frequency as a function of time in the time-frequency diagram, and determination means 107 for determining the air speed from all or part of said averages of the frequency, said durations and said slopes.
Abstract translation: 一种风速测量系统，包括提供通过穿过入射光束混合装置反向散射的入射光束的激光源，用于混合后向散射光束和参考光束，产生干涉测量波转换装置，将干涉测量波转换成与 所述波第一确定装置的功率用于确定所述电信号的时间 - 频率图。 该系统还包括用于确定所述图的点的第二确定装置，每个点是所述图的一组连接点，已经超过检测阈值计算装置，用于计算频率的平均值，持续时间和斜率， 在时间频率图中作为时间的函数的频率，以及用于从频率，所述持续时间和所述斜率的所有或部分所述平均值确定空气速度的确定装置107。
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公开(公告)号：US20160231348A1
公开(公告)日：2016-08-11
申请号：US13852744
申请日：2013-03-28
Applicant: Thales
Inventor： Xavier Lacondemine , Nicolas Martin , Jean-Pierre Schlotterbeck , Gregory Baral-Baron
IPC: G01P5/26
Abstract: An anemometry system comprising a laser source supplying an incident beam that is backscattered by passing through the incident beam mixing means for mixing the backscattered beam and a reference beam, creating an interferometry wave conversion means, converting the interferometry wave into an electrical signal proportional to the power of said wave first determination means, for determining a time-frequency diagram of said electrical signal. The system also comprises second determination means for determining spots of said diagram, each spot being a set of connected points of said diagram, having exceeded a detection threshold computation means for computing an average of the frequency, a duration and a slope characterizing the trend of the frequency as a function of time in the time-frequency diagram, and determination means 107 for determining the air speed from all or part of said averages of the frequency, said durations and said slopes.
Abstract translation: 一种风速测量系统，包括提供通过穿过入射光束混合装置反向散射的入射光束的激光源，用于混合后向散射光束和参考光束，产生干涉测量波转换装置，将干涉测量波转换成与 所述波第一确定装置的功率用于确定所述电信号的时间 - 频率图。 该系统还包括用于确定所述图的点的第二确定装置，每个点是所述图的一组连接点，已经超过检测阈值计算装置，用于计算频率的平均值，持续时间和斜率， 在时间频率图中作为时间的函数的频率，以及用于从频率，所述持续时间和所述斜率的所有或部分所述平均值确定空气速度的确定装置107。
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