Angle measuring error analysis of coordinate measuring system of laser radar

KANG Jiajie; ZHANG Fumin; QU Xinghua

doi:10.7510/jgjs.issn.1001-3806.2016.06.013

In order to design coordinate measuring system of laser radar precisely, based on the measuring principle and structure of laser radar coordinate measuring system, a angel measuring error model was built with three main system errors of peipendicularity error of pitch axis and azimuth axis, tilt error of reflector and tilt error of incident laser beam. After theoretical analysis, the maximum error values of single point coordinate measurement from 10m, were 124.1m, 447.9m and 242.4m. The results show that, in the design of laser radar coordinate measuring system, it is necessary to strictly control system error parameters like peipendicularity error of pitch axis and azimuth axis, tilt error of reflector and tilt error of incident laser beam in order that the measuring system has high measurement accuracy when measuring in large space. Besides, parameter calibration and error compensation are required to improve the measurement accuracy.

Angle measuring error analysis of coordinate measuring system of laser radar

Corresponding author: QU Xinghua, quxinghua@tju.edu.cn

1. State Key Laboratory of Precision Measuring Technology and Instrument, Tianjin University, Tianjin 300072, China

Received Date: 2015-10-11

Accepted Date: 2015-12-23

Available Online: 2016-11-25

Abstract: In order to design coordinate measuring system of laser radar precisely, based on the measuring principle and structure of laser radar coordinate measuring system, a angel measuring error model was built with three main system errors of peipendicularity error of pitch axis and azimuth axis, tilt error of reflector and tilt error of incident laser beam. After theoretical analysis, the maximum error values of single point coordinate measurement from 10m, were 124.1m, 447.9m and 242.4m. The results show that, in the design of laser radar coordinate measuring system, it is necessary to strictly control system error parameters like peipendicularity error of pitch axis and azimuth axis, tilt error of reflector and tilt error of incident laser beam in order that the measuring system has high measurement accuracy when measuring in large space. Besides, parameter calibration and error compensation are required to improve the measurement accuracy.

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Reference (15)

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Angle measuring error analysis of coordinate measuring system of laser radar

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