激光技术, 2015, 39 (5): 603, 网络出版: 2015-09-10   

非正交轴系激光经纬仪测量技术研究

Research of measurement technology of non-orthogonal shaft laser theodolites
作者单位
天津大学 精密测试技术及仪器国家重点实验室, 天津 300072
摘要
在空间大尺寸坐标测量系统中,经纬仪测量系统因其测量范围广、非接触式测量、便携性等优点应用广泛.为了降低经纬仪测量系统成本,减少经纬仪测量系统误差来源,提出了一种基于非正交轴系的激光经纬仪测量系统.首先,根据测量时非正交轴系的转换关系,推导出非正交轴系激光经纬仪的视准轴的空间数学模型.然后,根据双经纬仪前方交会测量原理,建立了基于非正交轴系激光经纬仪的测量系统,并推导出空间点坐标.最后,通过仿真与实验,验证了测量模型的正确性.结果表明,在测量半径为3m时,该测量系统对空间点在拉依达准则下的测量不确定度能达到±1mm以内,尤其适用于大空间、大尺寸测量.
Abstract
In large size space coordinate measuring system,theodolite measuring system is widely used due to wide measurement range,non-contact measurement and portability.In order to reduce the cost and the error sources of a traditional theodolite measurement system,a novel laser theodolite measurement system based on non-orthogonal shaft system was proposed.Firstly,according to the transform relationship of the non-orthogonal shaft system during the measurement,the orientation mathematical model of visual collimation axis of non-orthogonal shaft laser theodolites was derived.Based on intersection measurement principle of double theodolites,measurement system of non-orthogonal shaft system laser theodolites was built and the coordinates of spatial point were obtained.Finally,after simulation and experiments,the accuracy of measurement model was verified.The experiment results show that,measurement accuracy of spatial point measured with non-orthogonal shafting laser theodolites can achieve ±1mm at Pauta criterion within the measurement radius of 3m.The measurement system is especially suitable for the measurement of large volume or large space.

吴斌, 杨松. 非正交轴系激光经纬仪测量技术研究[J]. 激光技术, 2015, 39(5): 603. WU Bin, YANG Song. Research of measurement technology of non-orthogonal shaft laser theodolites[J]. Laser Technology, 2015, 39(5): 603.

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