RTRI REPORT Aug. 2005
PAPERS

The Problems and the Countermeasures in Applying GPS in a Railroad System

Haruo YAMAMOTO,  Shigehiro IIKURA,  Shinya SHISHIDO,
Kunihiro KAWASAKI,  Kazuki NAKAMURA,  Tomohiro MASUNARI


  Global Positioning System (GPS) is practically used for the purpose of position detection and synchronization between equipments in a field of transportation. However, we cannot deny risks caused by depending only on the GPS for positioning or time synchronization because of vulnerability of the GPS. In this report, we clarify various problems about reliability of positioning by the GPS supposed in a railroad system and propose the countermeasures to improve reliability of GPS function to secure the safety of train operation.

* Full papers of RTRI Report are written in Japanese.

Copyright (c) 2005 Railway Technical Research Institute