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Laser radar calibration device and method

A laser radar and calibration device technology, applied in radio wave measurement systems, instruments, etc., can solve problems such as low laser calibration accuracy, and achieve the effects of improving reliability, more measurement data, and improving calibration efficiency.

Active Publication Date: 2019-01-04
WHST CO LTD
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Problems solved by technology

[0004] The invention provides a laser radar calibration device and a calibration method using the device, aiming to solve the technical problems of laser radar calibration and low calibration accuracy in the prior art

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  • Laser radar calibration device and method
  • Laser radar calibration device and method

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[0050] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In the description of the present invention, "multiple" and "several" mean two or more.

[0051] See figure 1 with figure 2 Now the laser radar calibration device provided by the present invention will be described. The lidar calibration device is used to calibrate the lidar 2, and includes a plurality of reflection units 1, a plurality of adjustment mechanisms 3 corresponding to each reflection unit 1, and a control unit 5 for receiving measurement parameters sent by the lidar 2, each The reflection unit 1 is used to receive the laser beam emitted by the laser ra...

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Abstract

The invention provides a laser radar calibration device and method, and belongs to the technical field of a laser radar system. The laser radar calibration device comprises reflection units, adjustment mechanisms and a control unit, the distances between the reflection units and a laser radar change continuously, the adjustment mechanisms are used to adjust the included angles between the reflection units and a laser beam respectively, and the control unit is in communication connection with the laser radar. In the calibration method, the laser radar emits the laser beam according to a presentmeasurement angle direction, and the laser beam irradiates the reflection units; and the included angles between the reflection units and the laser beam are adjusted, an error of a measurement distance relative to the practical distance is obtained, and calibration data of the laser radar is determined according to the error, the intensity of a laser signal and the practical distance. According to the laser radar calibration device and method, a lot of measurement data with continuous change can be obtained needless of moving the reflection units, the real condition can be simulated, and thecalibration efficiency and precision are improved effectively.

Description

Technical field [0001] The invention belongs to the technical field of laser radar systems, and more specifically, relates to a laser radar calibration device and a calibration method. Background technique [0002] Lidar is a radar system that emits laser beams to detect the target's position and speed. The use of lidar can effectively obtain the information around the space. In order to achieve accurate positioning of the target object, the lidar needs to be accurately calibrated to improve the radar's ranging accuracy and ensure the reliability of the lidar in actual work. [0003] The laser radar needs to be calibrated before it is used or shipped from the factory. The traditional way is to place multiple standard reflectors with different distances from the laser radar in an open, interference-free space with little foreign matter. The range accuracy of the radar at different distances is used to calibrate the lidar. Among them, the movement of the standard reflector between ...

Claims

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Application Information

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IPC IPC(8): G01S7/497
CPCG01S7/497
Inventor 秦屹韩晨阳林建东李进强
Owner WHST CO LTD
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