列车控制系统需要准确的即时位置信息来确保列车安全高效地运行。北斗卫 星系统的建设对我国列车定位方式产生重要影响，因此基于北斗卫星的列车定位 技术研究重点是提髙定位结果的可靠性和精度。本文在北斗卫星系统定位理论的 基础上，对北斗卫星列车定位算法进行了深入的研究，主要的研究如下：69960

通过高精度单点定位算法使北斗卫星对列车进行精确定位。研究各种定位算 法并建立多种有效模型,消除大量误差,从而提高卫星定位的精度。

通过研究北斗/GPS 双模卫星单点定位技术,有效改善了加权完好性监测算 法,排除故障卫星,使得定位结果更加精确。

该论文有图 13 幅，表 7 个，参考文献 52 篇。

毕业论文关键词：列车定位 北斗卫星系统 双模定位 GPS 卫星系统 误差消除

Research on Location Technology of High Speed Railway

Abstract The train control system needs accurate location information to ensure the safe and efficient operation of the train.The construction of the BeiDou system will have an important impact on methods of train positioning in China, however, BeiDou satellite train positioning should mainly focus on how to improve the precision and reliability of the positioning results. Based on the BeiDou positioning principle, this paper proposed algorithms of BeiDou train positioning.The main research is as follows:

Through high-precision single point positioning algorithm makes the Beidou satellite to pinpoint the train.Research all kinds of localization algorithm and establish more effective model, removing a large number of errors, thereby improving the accuracy of satellite positioning.

By studying the single point positioning technology of the Beidou /GPS dual mode satellite, the weighted integrity monitoring algorithm can be improved effectively, and the fault satellite can be eliminated, so that the positioning results are more accurate.

This paper has 13 figures, 7 tables, 52 references.

Key Words:Train Positioning BeiDou Satellites System Integrated Positioning GPS Satellite System Error Elimination

  A

摘要 I

Abstract II

目录 III

图清单 V

表清单 V

1 绪论 1

1.1 研究背景 1

1.2 研究的问题 2

1.3 定位技术的国内外研究现状 2

2 定位系统原理及方法 5

2.1 GPS 系统概述 5

2.2 北斗定位系统 5

2.3 本章小结 17

3 基于北斗卫星高精度单点列车定位方法研究 18

3.1 概述 18

3.2 北斗卫星载波相位平滑伪距 18

3.3 双频组合相位减伪距法周跳探测与修复 20

3.4 北斗卫星码偏差估算 21

3.5 北斗高精度单点定位流程 24

3.6 本章小结 25

4 基于北斗/GPS 双模卫星系统的列车定位方法研究