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1. WO2020113356 - WIND FIELD INFORMATION MEASUREMENT METHOD AND ENGINE ROOM-TYPE LASER RADAR

Publication Number WO/2020/113356
Publication Date 11.06.2020
International Application No. PCT/CN2018/118859
International Filing Date 03.12.2018
IPC
G01S 17/95 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems, specially adapted for specific applications
95for meteorological use
G01S 17/32 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
08for measuring distance only
32using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
CPC
G01S 17/32
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
02Systems using the reflection of electromagnetic waves other than radio waves
06Systems determining position data of a target
08for measuring distance only
32using transmission of continuous unmodulated waves, amplitude-, frequency-, or phase-modulated waves
G01S 17/95
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
17Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
88Lidar systems specially adapted for specific applications
95for meteorological use
Applicants
  • 南京牧镭激光科技有限公司 NANJING MOVELASER TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 周军 ZHOU, Jun
  • 肖增利 XIAO, Zengli
  • 朱海龙 ZHU, Hailong
  • 唐安庆 TANG, Anqing
Agents
  • 北京超凡志成知识产权代理事务所(普通合伙) CHOFN INTELLECTUAL PROPERTY
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) WIND FIELD INFORMATION MEASUREMENT METHOD AND ENGINE ROOM-TYPE LASER RADAR
(FR) PROCÉDÉ DE MESURE D'INFORMATIONS DE CHAMP DE VENT ET RADAR LASER DE TYPE COMPARTIMENT MOTEUR
(ZH) 风场信息测量方法及机舱式激光雷达
Abstract
(EN)
A wind field information measurement method and an engine room-type laser radar, relating to the field of wind power generation. The method comprises: a multi-wavelength laser (110) sends light signals having at least two different wavelengths, a beam splitter (120) splits the light signals into at least a first light signal and a second light signal, a frequency modulator (130) transmits out 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, a signal processing device (140) obtains a first light return signal returned after the first light pulse signal is scattered by the aerosol in the atmosphere and a second light return signal returned after the second light pulse signal is scattered by the aerosol in the atmosphere, the first light return signal and the second light return signal are combined by a beam combiner (150) to obtain a light return signal, and the signal processing device (140) obtains wind field information on the basis of the light return signal. By measuring wind field information by simultaneously transmitting at least two light signals having different wavelengths, the accuracy of the measurement is improved.
(FR)
L'invention concerne un procédé de mesure d'informations de champ de vent et un radar laser de type compartiment moteur, se rapportant au domaine de la production d'énergie éolienne. Le procédé comprend les étapes suivantes : un laser à longueurs d'onde multiples (110) envoie des signaux lumineux ayant au moins deux longueurs d'onde différentes, un diviseur de faisceau (120) divise les signaux lumineux en au moins un premier signal lumineux et un second signal lumineux, un modulateur de fréquence (130) émet un premier signal d'impulsion lumineuse obtenu après modulation de fréquence sur le premier signal lumineux et un second signal d'impulsion lumineuse obtenu après modulation de fréquence sur le second signal lumineux, un dispositif de traitement de signal (140) obtient un premier signal de retour de lumière renvoyé après que le premier signal d'impulsion de lumière ait été diffusé par l'aérosol dans l'atmosphère et un second signal de retour de lumière renvoyé après que le second signal d'impulsion de lumière ai été diffusé par l'aérosol dans l'atmosphère, le premier signal de retour de lumière et le second signal de retour de lumière sont combinés par un combinateur de faisceau (150) pour obtenir un signal de retour de lumière, et le dispositif de traitement de signal (140) obtient des informations de champ de vent sur la base du signal de retour de lumière. En mesurant des informations de champ de vent en transmettant simultanément au moins deux signaux de lumière ayant des longueurs d'onde différentes, la précision de la mesure est améliorée.
(ZH)
一种风场信息测量方法及机舱式激光雷达,属于风电发电领域。该方法包括:多波长激光器(110)发送包含至少两种不同波长的光信号,分束器(120)将光信号分为至少包括第一光信号和第二光信号的两束光信号,频率调制器(130)将对第一光信号进行调频后获得的第一光脉冲信号以及对第二光信号进行调频后获得的第二光脉冲信号发射出去,信号处理装置(140)获取第一光脉冲信号经过大气中气溶胶散射后返回的第一回光信号以及第二光脉冲信号经过大气中气溶胶散射后返回的第二回光信号通过合束器(150)合成的回光信号,信号处理装置(140)基于回光信号获得风场信息。通过同时发射不同波长的至少两束光信号来对风场信息进行测量,提高了测量的准确性。
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