摘要
为将全球卫星导航系统(Global Navigation Satellite Systems,GNSS)定位技术应用于轨道几何参数测量,提高高速铁路绝对坐标的测量精度,在高速铁路沿线布设GNSS定位接收机作为定位基准站,并将各个接收机经过长时间观测的数据进行统一的联合解算处理,得到各定位基准站坐标。利用加装了GNSS定位接收机的轨道检查仪分别测量轨道特定点的大地坐标和内部几何参数,并将特定点的大地坐标测量结果与各定位基准站坐标数据进行联合解算处理,得到特定点的大地坐标最终测量结果。最后,将特定点的大地坐标最终测量结果与轨道内部几何参数测量结果进行数据融合,得到相应区段各点轨道内外部几何参数的测量结果。不确定度评定及验证试验表明,加装了GNSS定位接收机的轨检仪显著提高了轨道几何参数测量的精度,并极大提高了轨道测量的效率。
In order to apply Gobal Navigation Satellite Systems(GNSS)positioning technology to the measurement of track geometry parameters and improve the measurement accuracy of absolute coordinate of high speed railway,GNSS positioning receivers are deployed as positioning reference stations along the high speed railway,and after long time measurement,the data of each receiver are subjected to unif ied joint solution to obtain the coordinate of each positioning reference station.The track measurement instruments with GNSS positioning receivers are used to measure the geodetic coordinate and internal geometrical parameters of specific points on the tracks,and the measurement results of the specific points in geodetic coordinate and the coordinate data of each positioning reference station are jointly processed to obtain the specific points final results in geodetic coordinate.Finally,the final geodetic coordinate measurement results of specfic points are fused with the measurement results of the track internal geometric parameters to obtain each point's measurement results of the inner and outer geometric parameters of corresponding track segment.Uncertainty evaluation and verification test show that the track measurement instruments with GNSS positioning receivers significantly improve the measurement accuracy of track geometric parameters,and greatly improve the efficiency of track measurement.
作者
路计哲
LU Jizhe(China Academy of Railway Sciences,Beijing 100081,China)
出处
《铁道建筑》
北大核心
2018年第7期133-136,共4页
Railway Engineering
关键词
高速铁路
GNSS定位
轨道几何参数
不确定度评定
验证试验
High speed railway
GNSS positioning
Track geometry parameter
Uncertainty evaluation
Verification test
