UNCERTAINTY EVALUATION FOR GPS SPEED METER OF VEHICLE

摘要：

　　Increasing requirements for mass production and needs for calibration of vehicle speed-measuring devices call for the traceability of GPS(Global Positioning System)speed meter,and uncertainty evaluation is the key.The method to evaluate the uncertainty of GPS speed meter is given.Standard facility based on GPS signal simulator is designed considering the impacts on the uncertainty evaluation.The results of a laboratory experiment show that the uncertainty in the range of(20-100)km/h is less than 0.02%(k=2.00)and in the range of(100-200)km/h is less than 0.2%(k=2.11).It is proven that the uncertainty evaluation reveals the performance of GPS speed meter and gives the numerical basis for improvement.

关键词： GPS speed meter Uncertainty evaluation

作者: Z.Fan Q.Sun L.Du J.Bai

作者单位: National Institute of Metrology,Beijing,China

会议类型: 国际会议

会议名称: 国际测量技术联合会(IMEKO)2017年国际测量技术研讨会

会议地点: 杭州

会议语种:英文

页码: 35-37

在线出版日期: 2017-09-04（万方平台首次上网日期，不代表论文的发表时间）