闡述了軌道交通列車定位技術。介紹了在軌道交通系統(tǒng)中列車定位技術的功能，國內外軌道交通中主要采用的列車定位方法，重點論述了幾種主要定位技術，并從定位精度、閉塞制式、維護投資成本、抗干擾等方面進行分析比較。提出目前軌道交通定位技術應綜合運用，取長補短，多種方法相互融合，才能滿足軌道交通中對安全可靠性的要求。

Abstract:

?Rail train positioning technology is described. The paper introduces the funetions of the train positioning technology in the rail transit system， the main methods of train positioning do mestic and international rail， and focuses on several key methods， analyzes and compares from the positioning accuracy， block system, maintenance and investment cost， interference and so on， suggested that the current rail positioning technology should be integrated use of positioning method of meriging， learn from each other， to meet the reliability requirements of rail safety.