Method and device for emitting and receiving symmetrically-distributed light beams of laser radar

A beam emission and lidar technology, applied in the fields of environmental science and lidar, can solve the problems of different beam divergence angles, inability to achieve parallel optical axes, and inability to achieve coaxial laser beams, and achieve the effect of ensuring comparability

A beam emission and lidar technology, applied in the fields of environmental science and lidar, can solve the problems of different beam divergence angles, inability to achieve parallel optical axes, and inability to achieve coaxial laser beams, and achieve the effect of ensuring comparability

CN101692126BActive Publication Date: 2012-12-05ANHUI INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
0 Cites 1 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and device for emitting and receiving symmetrically-distributed light beams of laser radar
  • Method and device for emitting and receiving symmetrically-distributed light beams of laser radar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] see figure 1 , a laser radar symmetrical distributed beam transmitting and receiving device, including a laser transmitting system, a laser receiving system, and a control, acquisition, processing and display system, the laser transmitting system includes a laser 6, the laser receiving system includes a telescope 7, and the front of the laser 6 There is a reflector 1, and the laser emitted by the laser 6 is reflected by the reflector 1, reflected by the reflector 2 to the 355nm laser, and transmitted to the 1064nm and 532nm laser; after the 355nm laser is reflected, it is expanded by the second beam expander system 9 After that, it is reflected from the reflector 5 to the atmosphere; the transmitted 532nm laser is reflected by the reflector 3, and then the first beam expander system expands the beam 8 and reflects from the reflector 4 to the atmosphere; the transmitted 1064nm laser is transmitted through the reflector 3; the reflector 2, 3, 4, 5 are arranged parallel to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method and a device for emitting and receiving symmetrically-distributed light beams of laser radar. A system adopts the method for independently emitting and receiving the light beams with a plurality of wavelengths, thereby eliminating an effect on a measurement result caused by different divergent angles and refractive indexes of the laser beams with the different wavelengths, independently realizing the calculation of the overlap coefficient of the system under the different laser wavelengths, developing the real coaxiality or completely parallel optical axes of receiving and emitting optical systems, ensuring data comparability and providing the method for the further development and practical application of the laser radar. The independent emission of the light beams with the different laser wavelengths in the system can be debugged under a visible software interface, so that an ordinary operator can finish the operation and maintenance of the system without the help of a precise measuring instrument or special technical personnel.

Description

technical field [0001] The invention relates to the fields of environmental science and laser radar technology, in particular to a laser radar symmetrical distributed beam transmitting and receiving method and device. Background technique [0002] Lidar is one of the rapidly developing high-tech, and it is the product of the combination of traditional radar technology and modern laser technology. Lidar emits laser pulses into the atmosphere, and conducts measurement and research on atmospheric optical characteristics and the temporal and spatial distribution of pollutants by receiving backscattered echo information after the interaction between atmospheric molecules or aerosol particles and lasers, and analyzes atmospheric visibility, aerosol Spatial and temporal distribution and variation of particulate matter, cloud base height, boundary layer height, characteristics of aerosol particles, and spatial distribution characteristics of water vapor and ozone. [0003] At prese...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
05 Dec 2012
Publication
CN101692126B
IPC
G01S7/483; G01S7/497
Inventors
赵南京; 刘建国