Trajectory-aided GNSS Land Navigation: Application to Train Positioning. (La navigation terrestre GNSS assistée par la trajectoire : application au positionnement du train)

A PPP-based Multi-sensor Fusion Positioning Solution for Train Localization

GNSS-based train positioning is one of the most promising solutions for next generation train control systems, e.g. the European Train Control System (ETCS), Chinese Train Control System (CTCS). The key for implementing GNSS-based positioning solution in railways application are the critical RAMS (Reliability, Availability, Maintainability, and Safety) requirements. This paper proposes a real-t...

Global Positioning System surveying to monitor land subsidence in Sacramento Valley, California, USA*

A subsidence research program began in 1985 to document the extent and magnitude of land subsidence in Sacramento Valley, California, an area of about 15 600 km, using Global Positioning System (GPS) surveying. A brief description of GPS surveying is followed by a summary of each of four surveys between 1985 and 1989. In addition to periodic conventional spirit levelling, an examination was mad...

Optimisation de l'infrastructure d'un système de positionnement indoor à base de transmetteurs GNSS. (Optimizing the infrastructure of the GNSS transmitter based indoor positioning system)

A Feasibility Analysis of Land-Based SINS/GNSS Gravimetry for Groundwater Resource Detection in Taiwan

The integration of the Strapdown Inertial Navigation System and Global Navigation Satellite System (SINS/GNSS) has been implemented for land-based gravimetry and has been proven to perform well in estimating gravity. Based on the mGal-level gravimetry results, this research aims to construct and develop a land-based SINS/GNSS gravimetry device containing a navigation-grade Inertial Measurement ...

Research on a hybrid map matching algorithm for Global Navigation Satellite System based train positioning

GNSS has been proved to have great potential for Safety-of-Life critical rail applications, particularly the train control technique and railway signalling. In the GNSS based train positioning scheme, although with the aid of inertial sensors (e.g. the odometer, gyro, accelerator and Doppler radar) some systematic and random errors could be reduced or limited by an appropriate measuring method ...