Remote laser radar calibration system and method

Abstract

A long-range laser radar calibration system, which performs calibration between the laser radar and the calibration device. The calibration device has a support frame, a calibration panel and an adjustment device, wherein the calibration panel is placed on the support frame, and the adjustment device is used to adjust the height of the calibration panel And the angle, wherein the adjustment device includes the upper part and the lower part of the support frame, the upper part has a plurality of adjustment holes of different heights, the lower part and the folding device are fixed through the connecting device, and the inner rotation control device and the outer rotation control device , the outer rotation control device is arranged between the inner rotation control device and the support frame, the inner rotation control device and the outer rotation control device have a common center, and the inner rotation control device and the outer rotation control device are mutually rotated to read the scale position and give To adjust the angle, in addition, the fixing device can pass through the calibration panel, protrude from the adjustment hole of the support frame, and fix the fixing device to the adjustment hole through the screw fixing part.

Description

technical field [0001] The invention relates to a device calibration method, in particular to a remote laser radar calibration system and method. Background technique [0002] The LiDAR (light detection and ranging, LiDAR) system can quickly obtain the three-dimensional surface information of the measured object, so as to obtain the high-precision and high-density three-dimensional point cloud data of the measured object. In addition, the full-waveform lidar device can also collect the echo waveform of the measured object through a high-speed analog / digital (A / D) conversion circuit, and form the reflection intensity information of the measured object through waveform analysis. [0003] However, due to the system adjustment and delay interference in the circuit, the system deviation of the laser radar system in the acquisition of scanning angle and distance value is caused. The detector of the radar system has a nonlinear effect during the photoelectric conversion, which cau...

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Problems solved by technology

[0004] Based on the above-mentioned traditional calibration technology between the laser radar system and the measured object, there are many problems at the same time. Among them, in the kilometer-level far-field environment, the detection principle and scanning method of the laser radar system do not involve the controllability and controllability of the measured object. Design and implementation of a mobile and robust system error geometric calibration device; in addition, the existing technology does not involve radiation correction corresponding to the detection wavelength of the laser radar system in a kilometer-level far-field environment, and covering the reflectivity of ground objects and the dynamic range of laser detection design and implementation of

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