Laser radar is a kind of sensor that uses laser technology to measure distance and detect. It determines the distance of the target object by emitting laser pulse and measuring the time required for the laser pulse to be reflected back by the target, so as to achieve high-precision ranging of the target object and 3D spatial information acquisition. Lidar is widely used in the fields of autonomous vehicles, robot navigation, map drawing, industrial measurement, etc.
The causes of lidar measurement errors can be analyzed from the following aspects:
1. Optical system error: the optical system of laser radar is composed of D8741A There are refraction, reflection error, beam scattering and other problems in the composition of laser, lens and other optical elements, which affect the propagation and reception of laser beam, resulting in measurement errors.
2. Mechanical system error: The mechanical structure of the laser radar includes scanning device, support and other components. The instability, vibration or improper assembly of the mechanical system will affect the measurement accuracy.
3. Environmental factors: The working environment of the laser radar also has an important impact on the measurement results. For example, changes in temperature, humidity, atmospheric pressure and other environmental parameters may cause measurement errors, especially in complex scenes.
4. Reflected target characteristics: different surface characteristics of the target measured by the laser radar will also lead to measurement errors, such as the reflectivity, texture and other characteristics of the target object will affect the reflection effect of the laser beam, thus affecting the measurement accuracy.
5. Data processing algorithm error: The data processing algorithm of the laser radar may also have errors, such as improper design or imperfect implementation of the algorithm in the signal processing, error correction and other steps, which will lead to the final measurement error.
To sum up, the cause of lidar measurement error is a complex problem, which requires comprehensive consideration of optical system, mechanical system, environmental factors, target characteristics, data processing algorithm and other factors, and take corresponding measures to compensate and correct, so as to improve the measurement accuracy and reliability of lidar.
