Multiline lidar

Abstract

The embodiment of the invention discloses a multiline lidar comprising a laser emitting array for emitting multipath emergent laser. The laser emitting array comprises a first laser emitting plate group, a second laser emitting plate group and a third laser emitting plate group. The first laser emitting plate group includes a plurality of first laser emitting plates which are staggered in a vertical direction. Each of the first laser emitting plates includes a laser emitter. The second laser emitting plate group includes a plurality of second laser emitting plates. Each of the second laser emitting plates includes a plurality of laser emitters. The third laser emitting plate group includes a plurality of third laser emitting plates which are staggered in the vertical direction. Each of thethird laser emitting plates includes a laser emitter. The inclined angle between the first laser emitting plates, the second laser emitting plates, the third laser emitting plates and the horizontalplane is an acute angle. The vertical resolution of the multiline lidar can be enhanced so as to realize key area scanning.

Description

technical field [0001] The invention relates to the detection field, in particular to a multi-line laser radar. Background technique [0002] Multi-line laser radar is a radar system that emits laser beams to detect the position, speed and other characteristic quantities of the target. Its working principle is to first transmit the detection laser beam to the target, and then compare the received signal reflected from the target with the transmitted signal After comparison, after proper processing, the relevant information of the target can be obtained, such as target distance, azimuth, height, speed, attitude, and even parameters such as shape. [0003] The important feature of multi-line lidar is resolution, which is related to the laser emitters distributed per unit distance of multi-line lidar. The more laser emitters per unit distance, the higher the resolution. In the existing multi-line laser radar, the laser emitter is arranged on the laser emitting plate. Due to th...

AI Technical Summary

Problems solved by technology

In the existing multi-line laser radar, the laser emitter is arranged on the laser emitting plate. Due to the limitation of the volume of the laser emitting plate itself, it is impossible to arrange as many laser emitters as possible in a unit distance, so it is also impossible to improve the multi-line laser radar. LiDAR Resolution

[0004] In addition, the transmitting circuit devices of the existing multi-line laser radar are relatively complex, the volume is also large, the internal optical path is complex, the required components are more, and the overall weight is heavy, which affects the service life of the radar.

[0005] It can be seen that the resolution of the existing multi-line lidar is still low, and the assembly is difficult, the internal structure is complicated, the service life is poor, and the cost is high

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