Laser radar device and detection method

Abstract

The invention discloses a laser radar device and a detection method. The basic idea of the invention is as follows: a transmission laser transmits generated laser to an optical discrete device; the optical disperse device performs spatial discreteness to form spatial discrete laser; the spatial discrete laser is incident to a target object; an echo signal receiving optical device receives an echo signal, and controls a component to process the echo signal. The discrete laser beams are not floodlight and not continuously distributed in space, and are a plurality of narrow light beams, so that a signal attenuation problem is greatly avoided, and thus the more distant target object can be detected, and detection performance of the laser radar is provided.

Description

technical field [0001] The invention relates to laser radar technology, in particular to a laser radar device and a detection method. Background technique [0002] Lidar (LIDAR, Light Detection And Ranging) can be modulated into a laser pulse as a detection signal, and the target distance at a specific azimuth is measured by measuring the time of the reflected light signal of the object. figure 1 It is a structural schematic diagram of the laser radar in the prior art. like figure 1 As shown, the laser radar generally includes a laser emitting optical component 101 , an echo signal receiving optical component 102 , and a control component 103 . Among them, the laser emitting optical component 101 will start the laser light source to generate laser light in a specific direction; after irradiating the target object, a reflected echo signal will be generated; the echo signal receiving optical component 102 will receive the reflected echo signal; the control component 103 will...

AI Technical Summary

Problems solved by technology

It is precisely because the flash lidar is flooded and distributed continuously in a large space angle, so the signal attenuation is serious

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