摘要
列车完整性检查可以有效地避免因列车脱钩造成的追尾事故,保障行车安全。在列车行驶过程中,部分线路卫星视角较差,现有的列车完整性检查方法无法实现实时定位及动态检查。为解决上述问题,提出了一种附加轨道约束的动态双差列车完整性检查方法,通过描绘列车头部行进轨迹的实时拟合曲线,结合轨道特征修正卫星信号的漂移误差;同时,利用动态双差对卫星原始观测数据进行计算,消除观测误差,构建了一种适应性强、精度可控的列车完整性检查方法。进行静态和动态测试验证,实验表明,平均误差分别在0.2m和0.19m左右,证明了本文所提方法的准确性和有效性。
Train integrity inspection can effectively avoid rear-end collisions caused by train disintegration and ensure driving safety. During the running of the train, the satellite view of some lines is poor, and the existing train integrity inspection method cannot realize real-time positioning and dynamic inspection. This paper proposes a dynamic double-difference train integrity check method with additional orbital constraints. It corrects the drift error of satellite signals by drawing the real-time fitting curve of the trajectory of the train head and combining the orbital characteristics. Observation data were calculated to eliminate observation errors, and a train integrity inspection method with strong adaptability and controllable precision was constructed. This paper carried out static and dynamic test verification. The experiment shows that the average error is about 0.2 m and 0.19 m respectively, which proves the accuracy and effectiveness of the method proposed in this paper.
作者
欧阳籽勃
OUYANG Zi-bo(China Academy of Railway Sciences,Beijing 100081,China)
出处
《计算机仿真》
北大核心
2021年第6期83-87,共5页
Computer Simulation
关键词
列车完整性检查
实时定位
轨道特征
动态双差
Train integrity monitoring
Real-time positioning
Track characteristics
Dynamic double difference
