摘要
为了精确地设计激光雷达坐标测量系统仪器,在研究激光雷达坐标测量系统测量原理和结构的基础上,建立了引入两轴垂直度误差、反射镜倾斜误差和反射镜入射激光束倾斜误差这3项主要系统误差的测角误差模型。由理论分析可知,在距离10m处,这3项系统误差各自引入的单点坐标测量误差最大值分别为124.1μm,447.9μm和242.4μm。结果表明,在激光雷达坐标测量系统设计中,为保证在大空间测量中仍有很高测量精度,必须严格控制两轴垂直度误差、反射镜倾斜误差和反射镜入射激光束倾斜误差,并根据建立的误差模型进行参量标定和误差补偿。
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. 1μm, 447. 9μm and 242. 4μm. 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.
出处
《激光技术》
CAS
CSCD
北大核心
2016年第6期834-839,共6页
Laser Technology
基金
国家自然科学基金专项基金资助项目(51327006)
关键词
测试与计量
激光雷达
测角误差
误差分析
measurement and metrology
laser radar
angle measuring error
error analysis
