What types of lidar are there?

Lidar is divided into five types: mechanical, semi-solid, solid-state, flash and frequency modulated continuous wave (FMCW). The scanning method and principle of それぞれisoなる has its own advantages and disadvantages and is applicable for different application scenarios.

Types of LiDAR

Lidar (LiDAR) is an active remote sensing technology that uses laser pulses to measure Object distance and shape. According to its working principle and scanning method, lidar is mainly divided into the following types:

1. Mechanical lidar

Mechanical lidar uses rotating or swinging Mirrors or prisms are used to change the direction of the laser beam to achieve scanning at different angles. They generally have longer measurement distances and higher accuracy, but are slower and larger.

2. Semi-solid lidar

Semi-solid lidar uses multiple laser transmitters and a receiver through MEMS (Micro-Electro-Mechanical Systems) reflectors or prisms array to change the direction of the laser beam. They are faster than mechanical lidars, but typically have lower range and accuracy.

3. Solid-state lidar

Solid-state lidar uses electronic scanning to directly control laser beams through technologies such as optical phased array (OPA) or flash lidar. direction. They offer the advantages of small size, light weight, and high-speed scanning, but may also have cost and accuracy limitations.

4. Flash lidar

Flash lidar uses a high-power laser array to instantly emit a large number of laser pulses to form a two-dimensional depth image. They have high speed and range, but generally low accuracy.

5. Frequency Modulated Continuous Wave (FMCW) Lidar

FMCW Lidar measures the frequency difference between the reflected wave and the transmitted wave to obtain the target distance. They have high accuracy, but often have a small measurement range.

Summary:

The types of lidar are mainly classified according to their scanning methods and principles. Each type has its unique advantages and disadvantages and is suitable for different applications. Application scenarios.

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