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    METEOROLOGICAL OBSERVATION LIDAR
    15.
    发明公开
    METEOROLOGICAL OBSERVATION LIDAR 审中-公开

    公开(公告)号：EP3862788A1

    公开(公告)日：2021-08-11

    申请号：EP19869908.4

    申请日：2019-10-07

    申请人： Eko Instruments Co., Ltd.

    发明人： HASEGAWA, Toshikazu ,  TAKEUCHI, Eiji ,  TSUKAMOTO, Makoto ,  YABUKI,Masanori

    IPC分类号： G01S17/95 ,  G01N21/49 ,  G01S7/481 ,  G01W1/00

    摘要： A meteorological lidar capable of measuring vertical distributions of temperature, water vapor concentration, aerosol, wind direction/wind speed, ozone concentration, CO 2 concentration, etc., stably and continuously day and night is provided. A meteorological lidar that emits a laser beam of a specific wavelength into the air and measures scattered light generated by the laser beam includes an optical system that emits a laser beam into the air, and a dust-proof part that makes an enclosing space of the optical system clean.

    WIND FIELD INFORMATION MEASUREMENT METHOD AND ENGINE ROOM-TYPE LASER RADAR
    19.
    发明公开
    WIND FIELD INFORMATION MEASUREMENT METHOD AND ENGINE ROOM-TYPE LASER RADAR 审中-公开

    公开(公告)号：EP3783391A1

    公开(公告)日：2021-02-24

    申请号：EP18942353.6

    申请日：2018-12-03

    申请人： Nanjing Movelaser Technology Co., Ltd.

    发明人： ZHOU, Jun ,  XIAO, Zengli ,  ZHU, Hailong ,  TANG, Anqing

    IPC分类号： G01S17/95 ,  G01S17/32

    摘要： A wind field information measurement method and a nacelle-based lidar, relating to the field of wind power generation. The method comprises: sending, by a multi-wavelength laser (110), light signals having at least two different wavelengths; splitting, by a beam splitter (120), the light signals into at least a first light signal and a second light signal; transmitting, by a frequency modulator (130), a first light pulse signal obtained after frequency modulation on the first light signal and a second light pulse signal obtained after frequency modulation on the second light signal; acquiring, by a signal processing device (140), a return light signal formed in a manner of combining, by a beam combiner (150), a first return light signal returned after the first light pulse signal is scattered by aerosols in the atmosphere and a second return light signal returned after the second light pulse signal is scattered by aerosols in the atmosphere; and obtaining, by the signal processing device (140), wind field information on the basis of the return light signal. By measuring the wind field information by simultaneously transmitting at least two light signals having different wavelengths, the accuracy of the measurement is improved.