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    4.
    发明专利
    未知

    公开(公告)号：DE69105310D1

    公开(公告)日：1995-01-12

    申请号：DE69105310

    申请日：1991-02-27

    Applicant: SEXTANT AVIONIQUE

    Inventor： MORBIEU BERTRAND ,  TORREGROSA MICHEL

    IPC: G01P5/26 ,  G01S7/481 ,  G01P5/00 ,  G01S7/48

    Abstract: The system comprises at least one probe (1) comprising a laser generator (6), transmission optics (7, 8, 9, 10), optics (10, 9, 30) for receiving a radiation back-scattered by aerosols, means (3) of pumping the laser generator, a detection interferometer (4) receiving a portion of the transmitted laser beam and the back-scattered radiation and means (5) for, after beating of the transmitted and back-scattered beams, determining the Doppler shift of the back-scattered beam and from this deriving the air speed along the axis of the transmitted beam. The transmitted beam is focused on a section of air distant from the aircraft, the laser generator (6) is disposed in the vicinity of the skin of the aircraft, the pumping means (3) and the interferometer (4) are remotely installed in the aircraft and the frequency of the laser line is adapted such that the connections between the probe (1), on the one hand, and the pumping means (3) and the interferometer (4), on the other hand, are carried out by monomode optical fibres with maintained polarisation (13, 23; 17, 19, 20, 22). … …

    5.
    发明专利
    未知

    公开(公告)号：DE3673874D1

    公开(公告)日：1990-10-11

    申请号：DE3673874

    申请日：1986-05-27

    Applicant: SEXTANT AVIONIQUE

    Inventor： TORREGROSA MICHEL ,  MARGAILLAN ERIC

    IPC: G01S13/34 ,  G01S13/38 ,  G01S17/36 ,  G01S13/28 ,  G01S17/10

    Abstract: A method and device are provided for measuring the propagation time of a wave, wherein a wave is transmitted modulated in amplitude by a modulation signal. The wave reflected by an obstacle is received after a propagation time and the amplitude thereof is detected. The average value of the product of the detected signal and a reference signal is calculated and the delay with respect to the modulation signal is controlled so as to cancel out the average value. The modulation signal and the reference signal comprise a succession of elementary signals chosen so as to allow, in a single measurement, a long propagation time to be determined without ambiguity and with high accuracy.

    7.
    发明专利
    未知

    公开(公告)号：DE69105310T2

    公开(公告)日：1995-06-08

    申请号：DE69105310

    申请日：1991-02-27

    Applicant: SEXTANT AVIONIQUE

    Inventor： MORBIEU BERTRAND ,  TORREGROSA MICHEL

    IPC: G01P5/26 ,  G01S7/481 ,  G01P5/00 ,  G01S7/48

    Abstract: The system comprises at least one probe (1) comprising a laser generator (6), transmission optics (7, 8, 9, 10), optics (10, 9, 30) for receiving a radiation back-scattered by aerosols, means (3) of pumping the laser generator, a detection interferometer (4) receiving a portion of the transmitted laser beam and the back-scattered radiation and means (5) for, after beating of the transmitted and back-scattered beams, determining the Doppler shift of the back-scattered beam and from this deriving the air speed along the axis of the transmitted beam. The transmitted beam is focused on a section of air distant from the aircraft, the laser generator (6) is disposed in the vicinity of the skin of the aircraft, the pumping means (3) and the interferometer (4) are remotely installed in the aircraft and the frequency of the laser line is adapted such that the connections between the probe (1), on the one hand, and the pumping means (3) and the interferometer (4), on the other hand, are carried out by monomode optical fibres with maintained polarisation (13, 23; 17, 19, 20, 22). … …

    SYSTEME A LASER, DE MESURE DE L'ANGLE D'INCIDENCE D'UN AERONEF.
    9.
    发明专利
    SYSTEME A LASER, DE MESURE DE L'ANGLE D'INCIDENCE D'UN AERONEF. 未知

    公开(公告)号：FR2659452B1

    公开(公告)日：1992-07-03

    申请号：FR9002946

    申请日：1990-03-08

    Applicant: SEXTANT AVIONIQUE

    Inventor： BERTRAND MORBIEU ,  MORBIEU BERTRAND ,  MICHEL TORREGROSA ,  TORREGROSA MICHEL

    IPC: G01S7/481 ,  G01P5/26 ,  G01S17/58 ,  G01C21/00 ,  G01J9/00 ,  G01P13/00

    Abstract: Le système comprend au moins une sonde (1) comportant un générateur laser (6) une optique d'émission (7, 8, 9, 10), une optique (10, 9, 30) de réception d'un rayonnement de rétrodiffusion par les aérosols, des moyens (3) de pompage du générateur laser, un interferomètre de détection (4) recevant une partie du faisceau laser d'émission et le rayonnement rétrodiffusé et des moyens (5) pour, après battement des faisceaux émis et rétrodiffusé, déterminer la fréquence Doppler du faisceau rétrodiffusé et en déduire la vitesse de l'air le long de l'axe du faisceau d'émission. Le faisceau d'émission est focalisé sur une tranche d'air éloignée de l'aéronef, le générateur laser (6) est disposé au voisinage de la peau de l'aéronef, les moyens de pompage (3) et l'interferomètre (4) sont déportés dans l'aéronef et la fréquence de la raie laser est adaptée pour que les liaisons entre la sonde (1), d'une part, et les moyens de pompage (3) et l'interferomètre (4), d'autre part, soient réalisées par fibres optiques monomode à maintien de polarisation (13, 23; 17, 19, 20, 22).

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