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1. WO2020133384 - LASER RANGING DEVICE AND MOBILE PLATFORM

Publication Number WO/2020/133384
Publication Date 02.07.2020
International Application No. PCT/CN2018/125452
International Filing Date 29.12.2018
IPC
G01S 17/00 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
G01B 11/00 2006.01
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
G01C 3/00 2006.01
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
3Measuring distances in line of sight; Optical rangefinders
CPC
G01B 11/00
GPHYSICS
01MEASURING; TESTING
BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
11Measuring arrangements characterised by the use of optical means
G01C 3/00
GPHYSICS
01MEASURING; TESTING
CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
3Measuring distances in line of sight; Optical rangefinders
G01S 17/00
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
Applicants
  • 深圳市大疆创新科技有限公司 SZ DJI TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 王栗 WANG, Li
  • 董帅 DONG, Shuai
  • 洪小平 HONG, Xiaoping
Agents
  • 北京市磐华律师事务所 P. C. & ASSOCIATES
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) LASER RANGING DEVICE AND MOBILE PLATFORM
(FR) DISPOSITIF DE TÉLÉMÉTRIE LASER ET PLATEFORME MOBILE
(ZH) 一种激光测距装置及移动平台
Abstract
(EN)
Provided in the present invention are a laser ranging device and a mobile platform, the laser ranging device comprising an emitting module, the emitting module being used to emit a laser pulse to survey an object to be measured. The laser pulse is of linearly polarized light, the polarization direction of the linearly polarized light being parallel to a plane constituted by the emission direction of the linearly polarized light and the normal direction of an interference surface, the interference surface comprising a water surface or an ice surface. In the laser ranging device of the present invention, mis-measurement caused by a water surface or an ice surface is reduced by means of causing the polarization direction of emitted light to be parallel to a reflection plane, improving the reliability of the laser ranging device.
(FR)
La présente invention concerne un dispositif de télémétrie laser et une plateforme mobile, le dispositif de télémétrie laser comprenant un module d'émission, le module d'émission étant utilisé pour émettre une impulsion laser afin d'étudier un objet à mesurer. L'impulsion laser est de lumière polarisée linéairement, la direction de polarisation de la lumière polarisée linéairement étant parallèle à un plan constitué par la direction d'émission de la lumière polarisée linéairement et la direction normale d'une surface d'interférence, la surface d'interférence comprenant une surface d'eau ou une surface de glace. Dans le dispositif de télémétrie laser de la présente invention, une mauvaise mesure provoquée par une surface d'eau ou une surface de glace est réduite en faisant en sorte que la direction de polarisation de la lumière émise soit parallèle à un plan de réflexion, ce qui améliore la fiabilité du dispositif de télémétrie laser.
(ZH)
本发明提供一种激光测距装置及移动平台,所述激光测距装置包括发射模块,所述发射模块用于发射激光脉冲以探测待测物体,其中,所述激光脉冲为线偏振光,所述线偏振光的偏振方向平行于所述线偏振光的发射方向与干扰面的法向所构成的平面,所述干扰面包括水面或冰面。本发明的激光测距装置通过使出射光的偏振方向平行于反射平面,从而减少了水面或冰面产生的误测,提高了激光测距装置的可靠性。
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Latest bibliographic data on file with the International Bureau