Abstract The national comparison of non-contact speed meters was finished in 2018. The pilot lab was National Institute of Metrology, China. As the first comparison of fixed measurement spot type in on-site speed measuring metrology, 29 participating laboratories were involved, among which 27 were provincial level metrological institutes. All participating laboratories got satisfied results. The technical background and comparison program were introduced, the comparison method and uncertainty components were studied, the metrological particularities of speed measurement were proposed, and the comparison results were analyzed.
［1］张跃, 蔡常青, 孙桥. 机动车测速仪现场测试技术的国内外现状［J］. 中国计量, 2007, 11(4): 69-70.
Zhang Y, Cai C Q, Sun Q. Current situation on field test technology of speed meters［J］. China Metrology, 2007, 11(4): 69-70.
［2］白银, 孙桥, 杜磊, 等. 移动式机动车现场标准测速仪溯源技术的研究［J］. 计量学报, 2015, 36(1): 72-76.
Bai Y, Sun Q, Du L, et al. Study on Tracing Technique for Field Test Mobile Reference Vehicle Speed Meter［J］. Acta Metrologica Sinica, 2015, 36(1): 72-76.
［3］国家质量技术监督局. JJF 1117-2010 计量比对技术规范［S］. 2010.
［4］国家质量技术监督局. JJF 1193-2008 非接触式汽车速度计校准规范［S］. 2008.
［5］杜磊, 孙桥, 林峰, 等. 基于真实交通状况的固定式机动车现场测速标准装置［J］. 计量学报, 2018, 39(2): 207-212.
Du L, Sun Q, Lin F, et al. Fixed Standard Equipment for Field Tests of Vehicle Speed Measuring Devices Based on Actual Traffic ［J］. Acta Metrologica Sinica, 2018, 39(2): 207-212.
［6］孙桥, 蔡常青, 张跃, 等. 基于多普勒频移观测值的机动车GPS测速仪校准技术的研究［J］. 计量学报, 2010, 31(5): 456-459.
Sun Q, Cai C Q, Zhang Y, et al. Study on Calibration Technique for GPS Vehicle Speed-Measuring Device Based on Doppler Frequency Shift Measurement ［J］. Acta Merologica Stnica, 2010, 31(5): 456-459.
［7］陈凌峰. 标准不确定度A类评定中极差法的深入讨论［J］. 计量学报, 2019, 40(2): 347-352.
Cen L F. The Further Discussion of the Range Method in the Type AEvaluation of Sstandard Uncertainty［J］. Acta Metrologica Sinica, 2019, 40(2): 347-352.
［8］刘园园, 杨健, 赵希勇, 等. GUM法和MCM法评定测量不确定度对比分析［J］. 计量学报, 2018, 39(1): 135-139.
Liu Y Y,Yang J, Zhao X Y, et al. Comparative Analysis of Uncertainty Measurement Evaluation with GUM and MCM［J］. Acta Metrologica Sinica, 2018, 39(1): 135-139.
2020, Vol. 41 
