Remote laser radar calibration system and method

Abstract

The invention discloses a remote laser radar calibration system. The calibration is carried out between a laser radar and a calibration device, and the calibration device is provided with a support, acalibration panel, and an adjustment device. The calibration panel is disposed on the support, and the adjustment device is used for adjusting the height and angle of the calibration panel. The adjustment device comprises a support which is provided with an upper part and a lower part, wherein the upper part is provided with a plurality of adjustment holes at different heights, and the lower partand a folding device are fixed through a connecting device. The adjustment device also comprises an inner rotating control device and an outer rotating control device, wherein the outer rotating control device is disposed between the inner rotating control device and the support, and the inner and outer rotating control devices have the same center. The scale position is read through the mutual rotation of the inner and outer rotating control devices, and the angle is adjusted. In addition, a fixed device can pass through the calibration panel, is disposed on the adjustment holes of the support in a bulged manner, and is fixed on the adjustment holes through a spiral 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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