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Knowledge | How does LIDAR work?

Currently, laser Lidar sensor is changing the world who has been widely used in self-driving cars, drones, autonomous robots, satellites, rockets and etc.

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What’s Laser?

For the invention of LASER, it could be traced back to Stimulated Radiation Effects built by Albert Einstein in 1917. A particle at a high energy level is triggered by a photon that changes into a low energy level, it releases another photon with exactly the same frequency, phase position, propagation direction and polarization state as the stimulated one. The light emitted is called LASER, which was first translated to RADIUM, while  med LASER. 

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What’s Lidar technology?

According to the American Geosciences Institute, Lidar uses pulsed lasers to calculate the variable distance of an object from the Earth surface. These light pulses are combined with information collected by on-board systems, to form accurate 3-D information about the Earth surface and the detected object.

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Lidar works with a simple principle that it emits a laser to an object on the Earth surface and calculates how much time it takes to get the light back. It measures distance accurately and fast, since laser travels at a extremely high speed(about 300,000KM/second). Additionally, it is very professional. The formula used by analysts to calculate the exact distance of an object is as follows: distance of the object = (speed of light x time of flight)/2.


How does Lidar work?

First, Lidar does not operate independently, but consists of three main modules: the laser emitter, the receiver and the signal processor.

It basically works by emitting a kind of laser, which is refracted back to be received by CMOS sensors after encountering an object to measure the distance from the body to the obstacle.


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info@akusense.com

4F-5F, Building A, Tiange Technology Park, No.2 of Luozu Industrial Avenue, Shiyan Street, Baoan District, Shenzhen

Copyright (C) 2021 AKusense All Rights Reserved. Brand Planning: CTM
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