针对长跨度大尺度零部件空间坐标的精确测量过程中，常因空间阻隔、遮挡、被测点凹陷等因素导致隐藏特征区难以甚至无法直接进行光学测量的问题；将具有定心精度高、无离焦、无畸变和抗背景干扰能力强等特性的无衍射光，引入到探针法姿态测量系统中，提出了一种能与全站仪构成组合测量系统的无衍射光测量探针；建立了空间坐标测量系统的模型，研制了测量样机，分析了空间位置测量的不确定度，并进行了相关的对比测量实验；结果表明，基于无衍射光姿态测量探针具有1 mrad 的空间姿态测量精度，与全站仪构成组合测量系统在大尺度空间坐标的测量中具有毫米级的测量精度和良好的柔性。

The probe technique based on non-diffracting beam is proposed to be combined with a total station or a laser tracker to form a combined measuring system, which realizes the coordinate measurement of hidden parts in large spaces, in large-span measurement environments, space barrier, blocking.Depression of the measured point and other factors make it impossible to optically and directly measure some areas of the measured article. A attitude measurement probe prototype based on non-diffracting beam technology is developed for a system combined with a total station applied in coordinates precision measurement of hidden areas in large-scale space, the uncertainty of spatial location measurement is analyzed, and the measurement comparison experiment is completed. Experimental results and analysis indicate that the precision of probe’s attitude-measuring system and combing measurement system are 1 mrad and ± 1 mm, respectively, demonstrating more flexibility and reliable precision during combined measurement.