Liu Yang, Lin Jiarui, Yang Linghui, Wang Yilin, Zhu Jigui
Opt Express. 2018 Oct 1;26(20):26618-26632. doi: 10.1364/OE.26.026618.
The traceable absolute distances network with multiple global targets for multilateration is developed with a femtosecond pulse laser. It is aiming to enhance the ability and flexibility of the coordinate measurement, especially to monitor the positions of distributed stations in real time for some critical industrial environments. Here, multi-target absolute distances are determined by the temporal coherence method simultaneously with the pulse-to-pulse interferometer. Besides, the performance of the proposed system is evaluated in detail by comparing with a conventional interferometer. The experimental results indicate that the accuracy of distances measurement could all reach the sub-micron level and could be traceable to the length standard. Furthermore, a simple scheme of multilateration is presented based on the developed network. The coordinate of the initial point of multiple beams is measured by cooperation with a laser tracker. The results of coordinate measurement show that these methods have the potential for further industrial applications.
利用飞秒脉冲激光开发了具有多个全局目标用于多边测量的可溯源绝对距离网络。其目的是提高坐标测量的能力和灵活性，特别是在一些关键工业环境中实时监测分布式站点的位置。在此，多目标绝对距离通过时间相干法与脉冲间干涉仪同时确定。此外，通过与传统干涉仪比较，对所提出系统的性能进行了详细评估。实验结果表明，距离测量精度均能达到亚微米级且可溯源至长度标准。此外，基于所开发的网络提出了一种简单的多边测量方案。通过与激光跟踪仪配合测量多光束起始点的坐标。坐标测量结果表明这些方法具有进一步工业应用的潜力。
