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.

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

IPC: G01P5/26 ,  G01F1/66 ,  G01S17/88 ,  B64D43/02 ,  G01S17/58 ,  G01S17/95

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.

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。

公开(公告)号：US20150346328A1

公开(公告)日：2015-12-03

申请号：US14721950

申请日：2015-05-26

Applicant: THALES

Inventor： Philippe Rondeau ,  Nicolas Bastien ,  Patrick Feneyrou

IPC: G01S7/481 ,  G01S17/08

CPC classification number: G01S7/4814 ,  G01P5/26 ,  G01S7/481 ,  G01S17/08 ,  G01S17/95 ,  Y02A90/19

Abstract: The general field of the invention is that of optical lidars comprising an optical porthole and operating at a first wavelength. The optical porthole of the lidar according to the invention comprises a layer or a sheet made of an optical material. The lidar comprises means for illuminating said layer or said sheet at a second wavelength different from the first wavelength, said material being transparent at the first wavelength and absorbent at the second wavelength, said second wavelength being located in the visible spectrum.

Abstract translation: 本发明的一般领域是包括光学孔并且以第一波长工作的光学激光雷达。 根据本发明的激光雷达的光学孔眼包括由光学材料制成的层或片。 激光雷达包括用于以不同于第一波长的第二波长照亮所述层或所述片材的装置，所述材料在第一波长是透明的，在第二波长处是吸收剂，所述第二波长位于可见光谱中。

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

IPC: G01P5/26 ,  G01F1/66 ,  G01S17/88 ,  B64D43/02

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。

公开(公告)号：US20140119695A1

公开(公告)日：2014-05-01

申请号：US13938982

申请日：2013-07-10

Applicant: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE ,  THALES

Inventor： Thomas Nappez ,  Philippe Rondeau ,  Jean-Pierre Schlotterbeck ,  Elise Ghibaudo ,  Jean-Emmanuel Broquin

IPC: G02B6/26

CPC classification number: G02B6/262 ,  H01S3/025 ,  H01S3/0632 ,  H01S3/094084 ,  H01S3/09415 ,  H01S3/2308 ,  H01S5/141

Abstract: Optical system has a passive optical chip on the top surface with a first wave guide and a laser diode arranged on the edge of the chip. The chip has a reflecting structure on the top surface at the wavelength of the laser diode and a thin layer portion powered by the laser diode and covering a part of the first wave guide. The first wave guide input is linked to the laser diode, passing through the reflecting structure. The chip has a second wave guide on the top surface, a first coupler formed by two first portions of the first wave guide not covered by the thin layer portion and situated on either side of the thin layer portion along the optical path, and a second coupler formed by two second portions, respectively of the first and second wave guides, not covered by the thin layer portion.

Abstract translation: 光学系统在顶表面上具有无源光学芯片，第一波导和布置在芯片边缘上的激光二极管。 该芯片在激光二极管的波长处的顶表面上具有反射结构，并且由激光二极管供电并覆盖第一波导的一部分的薄层部分。 第一波导输入与激光二极管相连，通过反射结构。 芯片在顶表面上具有第二波导，第一耦合器由第一波导的两个第一部分形成，未被薄层部分覆盖，并且沿着光路位于薄层部分的任一侧上，第二波导 耦合器分别由第二和第二波导的两个第二部分形成，未被薄层部分覆盖。

公开(公告)号：US09588220B2

公开(公告)日：2017-03-07

申请号：US14721950

申请日：2015-05-26

Applicant: THALES

Inventor： Philippe Rondeau ,  Nicolas Bastien ,  Patrick Feneyrou ,  Jean-Pierre Schlotterbeck

IPC: G01S7/481 ,  G01S17/08 ,  G01P5/26 ,  G01S17/95

CPC classification number: G01S7/4814 ,  G01P5/26 ,  G01S7/481 ,  G01S17/08 ,  G01S17/95 ,  Y02A90/19

Abstract: The general field of the invention is that of optical lidars comprising an optical porthole and operating at a first wavelength. The optical porthole of the lidar according to the invention comprises a layer or a sheet made of an optical material. The lidar comprises means for illuminating said layer or said sheet at a second wavelength different from the first wavelength, said material being transparent at the first wavelength and absorbent at the second wavelength, said second wavelength being located in the visible spectrum.

Abstract translation: 本发明的一般领域是包括光学孔并且以第一波长工作的光学激光雷达。 根据本发明的激光雷达的光学孔眼包括由光学材料制成的层或片。 激光雷达包括用于以不同于第一波长的第二波长照亮所述层或所述片材的装置，所述材料在第一波长是透明的，在第二波长处是吸收剂，所述第二波长位于可见光谱中。

公开(公告)号：US09268094B2

公开(公告)日：2016-02-23

申请号：US13938982

申请日：2013-07-10

Applicant: THALES ,  CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE

Inventor： Thomas Nappez ,  Philippe Rondeau ,  Jean-Pierre Schlotterbeck ,  Elise Ghibaudo ,  Jean-Emmanuel Broquin

IPC: G02B6/42 ,  G02B6/26 ,  H01S5/14 ,  H01S3/063 ,  H01S3/094 ,  H01S3/0941 ,  H01S3/23 ,  H01S3/02

CPC classification number: G02B6/262 ,  H01S3/025 ,  H01S3/0632 ,  H01S3/094084 ,  H01S3/09415 ,  H01S3/2308 ,  H01S5/141

Abstract: Optical system has a passive optical chip on the top surface with a first wave guide and a laser diode arranged on the edge of the chip. The chip has a reflecting structure on the top surface at the wavelength of the laser diode and a thin layer portion powered by the laser diode and covering a part of the first wave guide. The first wave guide input is linked to the laser diode, passing through the reflecting structure. The chip has a second wave guide on the top surface, a first coupler formed by two first portions of the first wave guide not covered by the thin layer portion and situated on either side of the thin layer portion along the optical path, and a second coupler formed by two second portions, respectively of the first and second wave guides, not covered by the thin layer portion.

Abstract translation: 光学系统在顶表面上具有无源光学芯片，第一波导和布置在芯片边缘上的激光二极管。 该芯片在激光二极管的波长处的顶表面上具有反射结构，并且由激光二极管供电并覆盖第一波导的一部分的薄层部分。 第一波导输入与激光二极管相连，通过反射结构。 芯片在顶表面上具有第二波导，第一耦合器由第一波导的两个第一部分形成，未被薄层部分覆盖，并且沿着光路位于薄层部分的任一侧上，第二波导 耦合器分别由第二和第二波导的两个第二部分形成，未被薄层部分覆盖。

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

IPC: G01N21/88 ,  G01M11/02 ,  G01N21/25

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。

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

Inventor： Xavier Lacondemine ,  Gregory Baral-Baron ,  Jean-Pierre Schlotterbeck ,  Philippe Rondeau

IPC: G01P3/36 ,  G01S17/95 ,  G01P5/26 ,  G01S17/58 ,  G01S17/88 ,  G01S7/484 ,  G01S7/486 ,  G01S7/487

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。