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1.发明申请公开(公告)号：US20180149747A1
公开(公告)日：2018-05-31
申请号：US15821966
申请日：2017-11-24
Applicant: THALES
Inventor： Jean-Pierre SCHLOTTERBECK , Philippe RONDEAU
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).
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2.发明申请METHOD FOR ESTIMATING THE TRANSVERSE COMPONENT OF THE VELOCITY OF THE AIR IN A DOPPLER LIDAR MEASUREMENT 有权估算多普勒雷达测量中空气速度的横向分量的方法公开(公告)号：US20140247441A1
公开(公告)日：2014-09-04
申请号：US14052588
申请日：2013-10-11
Applicant: THALES
IPC: G01S17/95
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; analysing 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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公开(公告)号：US20230091324A1
公开(公告)日：2023-03-23
申请号：US17795177
申请日：2021-01-29
Applicant: THALES
Inventor： Philippe GUICHARD , Jean-Pierre SCHLOTTERBECK , Frédéric SAHLIGER , Jean-Claude BOURLAND , Philippe RONDEAU
Abstract: The present invention relates to a method for self-testing an angle-of-attack probe comprising the steps of controlling an angular excitation of a rotary element that is rotatable about its equilibrium position according to known excitation characteristics; acquiring angular measurements relating to the rotation of the rotary element, determining a parasitic torque applied to the rotary element on the basis of the angular measurements and of the excitation characteristics; comparing at least one component of the parasitic torque with at least one predetermined threshold and detecting an operating fault in the probe when said component exceeds the predetermined threshold.
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公开(公告)号：US20250004009A1
公开(公告)日：2025-01-02
申请号：US18665254
申请日：2024-05-15
Applicant: THALES
Inventor： Philippe GUICHARD , Jean-Pierre SCHLOTTERBECK , Frédéric SAHLIGER , Jean-Claude BOURLAND , Philippe RONDEAU
Abstract: The present invention relates to a method for self-testing an angle-of-attack probe comprising the steps of controlling an angular excitation of a rotary element that is rotatable about its equilibrium position according to known excitation characteristics; acquiring angular measurements relating to the rotation of the rotary element, determining a parasitic torque applied to the rotary element on the basis of the angular measurements and of the excitation characteristics; comparing at least one component of the parasitic torque with at least one predetermined threshold and detecting an operating fault in the probe when said component exceeds the predetermined threshold.
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