公开(公告)号：US10732279B2

公开(公告)日：2020-08-04

申请号：US15821966

申请日：2017-11-24

Applicant: THALES

Inventor： Jean-Pierre Schlotterbeck ,  Philippe Rondeau

IPC: G01C3/08 ,  G01S17/04 ,  G01S7/497 ,  G01S7/48 ,  G01S17/58 ,  G01P3/36 ,  G01S7/481

Abstract: A method for identifying an obstacle (O) in the laser beam (F) of a lidar system includes: commanding the transmission of a laser beam (F); and receiving a lidar signal (S) corresponding to the reflection of the beam (F) on a diffuser present in the beam (F). The detection method further includes: evaluating a set of first parameters of the lidar signal, the set of first parameters including at least an amplitude and a duration, a first detection moment being defined for the lidar signal (S), the duration being defined at each moment as the time elapsed since the first detection moment; identifying an obstacle (O) present in the beam (F) when the amplitude is greater than a first threshold and the duration is greater than a second threshold; and decreasing the power of the beam (F).

公开(公告)号：US09927456B2

公开(公告)日：2018-03-27

申请号：US14608962

申请日：2015-01-29

Applicant: THALES

Inventor： Gilles Genevrier ,  Bernard Ledain ,  Jacques Mandle ,  Jean-Pierre Schlotterbeck

IPC: G01P3/36 ,  G01P5/14 ,  G01P5/26 ,  G01P21/02 ,  G01S17/58 ,  G01S17/02 ,  G01S7/481 ,  G01P5/02 ,  G01S17/95

CPC classification number: G01P5/14 ,  G01P5/02 ,  G01P5/26 ,  G01P21/025 ,  G01S7/4813 ,  G01S17/023 ,  G01S17/58 ,  G01S17/95 ,  Y02A90/19

Abstract: A probe system, mixed primary reference probe for an aircraft, associated aircraft and measuring method are disclosed. In one aspect, the probe system includes a base designed to be fastened on the cockpit of an aircraft, a plurality of regularly spaced static pressure taps, arranged through the base and designed to be connected to a pressure measurement device. The system includes at least one optical window transparent to laser radiation and inserted into the base.

公开(公告)号：US20130142214A1

公开(公告)日：2013-06-06

申请号：US13686584

申请日：2012-11-27

Applicant: THALES

Inventor： Jean-Pierre Schlotterbeck ,  Xavier LaCondemine

IPC: G01N25/04

CPC classification number: G01N25/04 ,  B64D15/20 ,  G01P5/26 ,  G01S7/4912 ,  G01S17/023 ,  G01S17/58 ,  G01S17/95 ,  Y02A90/19

Abstract: The laser anemometry probe (LAP) system with continuous coherent detection, with single-particle mode, comprises means (AN) for analysing the measurement signals of the said probe (LAP) and means (MES_T) for measuring the temperature (T).The system comprises, furthermore, means (DET_CG) for determining icing conditions when means (DET_GEL) for detecting the presence of a liquid water drop detect the presence of a liquid water drop, and when the said temperature (T) is below the said third threshold (S3).

Abstract translation: 具有单粒子模式的具有连续相干检测的激光测风探针（LAP）系统包括用于分析所述探针（LAP）的测量信号的装置（AN）和用于测量温度（T）的装置（MES_T）。 此外，该系统还包括用于确定结冰条件的装置（DET_CG），当用于检测液体水滴的存在的装置（DET_GEL）检测液体水滴的存在时，以及当所述温度（T）低于所述第三 阈值（S3）。

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：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

IPC: G01P3/36 ,  G01S17/58 ,  G01F1/66 ,  G01P5/26 ,  G01S17/95

CPC classification number: G01S17/58 ,  G01F1/661 ,  G01F1/663 ,  G01P5/26 ,  G01S17/95

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。

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

CPC classification number: G01S17/58 ,  G01F1/661 ,  G01F1/663 ,  G01P5/26 ,  G01S17/95

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。

公开(公告)号：US08998485B2

公开(公告)日：2015-04-07

申请号：US13686584

申请日：2012-11-27

Applicant: Thales

Inventor： Jean-Pierre Schlotterbeck ,  Xavier LaCondemine

IPC: G01N25/02 ,  G01J5/00 ,  G01N25/04 ,  B64D15/20 ,  G01P5/26 ,  G01S17/58 ,  G01S17/95 ,  G01S17/02 ,  G01S7/491

CPC classification number: G01N25/04 ,  B64D15/20 ,  G01P5/26 ,  G01S7/4912 ,  G01S17/023 ,  G01S17/58 ,  G01S17/95 ,  Y02A90/19

Abstract: The laser anemometry probe (LAP) system with continuous coherent detection, with single-particle mode, comprises means (AN) for analyzing the measurement signals of the said probe (LAP) and means (MES_T) for measuring the temperature (T).The system comprises, furthermore, means (DET_CG) for determining icing conditions when means (DET_GEL) for detecting the presence of a liquid water drop detect the presence of a liquid water drop, and when the said temperature (T) is below the said third threshold (S3).

Abstract translation: 具有单粒子模式的具有连续相干检测的激光测风探针（LAP）系统包括用于分析所述探针（LAP）的测量信号的装置（AN）和用于测量温度（T）的装置（MES_T）。 此外，该系统还包括用于确定结冰条件的装置（DET_CG），当用于检测液体水滴的存在的装置（DET_GEL）检测液体水滴的存在时，以及当所述温度（T）低于所述第三 阈值（S3）。