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Laser radar scanning system based on AWG

A scanning system, laser radar technology, applied in radio wave measurement system, electromagnetic wave re-radiation, utilization of re-radiation and other directions, can solve the problems of high manufacturing cost, large volume and mass, complex structure and so on

Pending Publication Date: 2021-09-10
HANGZHOU XIGHT SEMICON CO LTD
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  • Abstract
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AI Technical Summary

Problems solved by technology

Existing laser scanning radars generally have high manufacturing costs, relatively complex structures, and short lifespan. Applications in the field of obstacle avoidance and navigation

Method used

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  • Laser radar scanning system based on AWG
  • Laser radar scanning system based on AWG

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Embodiment Construction

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all embodiments.

[0030] An AWG-based lidar scanning system provided by the present invention includes a horizontal rotation platform and a vertical scanning mechanism arranged on the horizontal rotation platform, and the vertical scanning mechanism includes an AWG and a collimator.

[0031] Further, the components of the longitudinal scanning mechanism are all passive devices, without other active devices, and do not need to be used in conjunction with electric slip rings, and have the characteristics of low moment of inertia, small size and long life.

[0032] Further, the horizontal rotation platform can be rotated mechanically at 360 degrees, and the rotation speed ...

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Abstract

The invention discloses a laser radar scanning system based on AWG, wherein the system comprises a transverse rotating platform and a longitudinal scanning mechanism arranged on the transverse rotating platform; the longitudinal scanning mechanism comprises an AWG and a collimator, the AWG is a passive device, and the device is small in size, easy to integrate, light in weight and convenient to rotate; the transverse rotating platform is small in rotational inertia, high-speed rotation can be achieved conveniently, and the rotating service life is long; the transverse scanning of a laser radar is determined by mechanical rotation, the transverse resolution ratio is high, the longitudinal resolution ratio is determined by the AWG, and the resolution ratio can be further improved by adding optical switch multiplexing in front of or behind the AWG; the laser radar can realize cheap and large-scale deployment through component reuse; and the laser radar can increase the number of lines by increasing the number of DFB arrays or the number of tunable laser wavelengths.

Description

technical field [0001] The invention relates to the application field of laser radar technology, in particular to an AWG-based laser radar scanning system in the fields of advanced driving assistance systems, unmanned driving systems, intelligent security systems, rail transit inspections, and UAV obstacle avoidance. Background technique [0002] Advanced Driver Assistant System (ADAS), referred to as ADAS, is to use various sensors installed on the car to collect environmental data inside and outside the car at the first time, and to identify, detect and control static and dynamic objects. Tracking and other technical processing, so that the driver can detect possible dangers in the fastest time, so as to attract attention and improve safety. Active safety technology. The sensors used in ADAS mainly include cameras, radars, lasers and ultrasonics, etc., which can detect light, heat, pressure or other variables used to monitor the state of the car. They are usually located i...

Claims

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Application Information

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IPC IPC(8): G01S7/481G01S17/931
CPCG01S7/4817G01S17/931
Inventor 黄锦熙单子豪巩少斌
Owner HANGZHOU XIGHT SEMICON CO LTD
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