Acalibration method considered incidence deviation for terrestrial laser scanner

doi:10.13474/j.cnki.11-2246.2022.0185.

Abstract

Abstract: There may be incident deviation in the ranging signal of the ground laser scanner, so that the incident vector and the rotation axis of the rotating reflector are not parallel to each other, and the resulting point cloud error diverges with the distance. This error cannot be calibrated by using the traditional total station systematic error model. Therefore it is necessary to consider the incident deviation of ranging signal as the system error of scanner. In this paper, a systematic error model for the ground laser scanner considering the incident deviation was introduced, and the corresponding systematic error parameter estimation method are proposed,which together constitute the calibration method of ground laser scanner. The formula derivation shows that the traditional total station systematic error model is a special case of the method in this paper. The experimental results show that compared with the traditional total station calibration method, this method reduces the closure error from 8 cm to 1 cm.

Key words: terrestrial laser scanner, systematic error calibration, incident deviation, rotating reflector

CLC Number:

P237

ZHANG Dexian, XIAO Haowei, WANG Jianglin, YANG Liyang. Acalibration method considered incidence deviation for terrestrial laser scanner[J]. Bulletin of Surveying and Mapping, 2022, 0(6): 130-136.

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