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Laser radar system

A laser radar and laser signal technology, applied in the field of laser detection, can solve problems such as low sensitivity and poor signal-to-noise ratio

Active Publication Date: 2020-09-15
SUTENG INNOVATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a laser radar system for the problems of poor signal-to-noise ratio and low sensitivity of the traditional laser radar system

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Embodiment Construction

[0028] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0029] In one embodiment, as figure 1 As shown in , a laser radar system includes a transmitting device 100 , a beam splitter 200 , a scanning device 300 , an amplification conversion module 402 , a coupler 500 and a receiving device 600 .

[0030] The emitting device 100 is used for emitting laser signals. Optionally, the laser signal emitted by the transmitting device 100 is a Frequency Modulated Continuous Wave (FMCW, Frequency Modulated Continuous Wave) laser signal. The transmitting device 100 may include a laser and a modulator, the laser is a tuned laser, and the ...

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Abstract

The invention relates to a laser radar system. The laser radar system includes: a transmitting device for transmitting a laser signal; a beam splitter used for splitting the laser signal into a localoscillation laser signal and a detection laser signal; a scanning device used for projecting the detection laser signal to a detection area and receiving an echo laser signal reflected by a target ina detection area; an amplification conversion module used for receiving the echo laser signal reflected by the scanning device, amplifying the echo laser signal and outputting the amplified echo lasersignal; a coupler used for receiving the local oscillator laser signal and the amplified echo laser signal, and outputting a received laser signal after coupling; and a receiving device used for receiving the received laser signal and calculating the position and / or speed information of a target in the detection area according to the received laser signal. Compared with a traditional laser radarsystem, the laser radar system is higher in signal-to-noise ratio and sensitivity.

Description

technical field [0001] The invention relates to the technical field of laser detection, in particular to a laser radar system. Background technique [0002] The laser radar system is a system that emits laser signals to detect the position, speed and other characteristic quantities of the target. Its sensitivity is one of the important performance parameters that determine its ranging range. [0003] Traditional lidar systems often use solid-state lidar. The receiving end of the area array lidar in the solid-state lidar generally adopts a pixel-level detector array. When measuring outdoors, especially in bad weather such as rainy days, foggy days, and snowy days, it is easily affected by the background light of the external environment or The influence of stray signal light causes the signal-to-noise ratio to deteriorate and the sensitivity to decrease, so that the maximum detection distance of the system is limited. Contents of the invention [0004] Based on this, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/481G01S7/4911G01S7/4914G01S7/4915
CPCG01S7/4811G01S7/4817G01S7/4818G01S7/4911G01S7/4912Y02A90/10
Inventor 王超
Owner SUTENG INNOVATION TECH CO LTD