In order to promote the application of noise map in high-speed railway management, drawing technology based on combination prediction model and geographic information system (GIS) is studied. Firstly, according distribution characteristics sources line structure railway, multi equivalent sound calculation method barrier insertion loss are optimized; secondly, a three-dimensional built GIS softw...

Railway signalling can be defined as all systems used to control railway traffic safely, essentially to prevent trains from colliding. Over the years knoledgment and technology able to satisfy this issue have been implemented. After a long period during which each European nation used its own system (with the conseguent absence of interoperabilty among them), ERTMS/ETCS is currently the most co...

Recently, the performance of mobile data networks has been evaluated from many aspects, e.g., TCP/IP protocols, comparison with WiFi or even satellite communication, under different movements within a metropolis area. Nevertheless, the result is still unknown in high-speed mobility scenarios and in a scale that crosses different metropolis and geographic areas. To fill in this blank, we carry o...

Synthetic Aperture Radar Interferometry (InSAR), widely applied for the monitoring of land subsidence, has the advantage of high accuracy and wide coverage. High-resolution SAR data offers a chance to reveal impressive details of large-scale man-made linear features (LMLFs) with Multi-temporal InSAR (MT-InSAR) analysis. Despite these advantages, research validating high-resolution MT-InSAR resu...

Abstract This paper evaluates the handover performance of an optimized A3 event handover algorithm of LTE system, which is based on the target cell pre-bearer procedure in the high-speed railway (HSR) scenario. The paper introduces this handover algorithm and the handover signaling procedure based on the target cell pre-bearer procedure. These have been designed and implemented in a dynamic sys...

This paper presents the analysis of Ricean K-factor for wideband high-speed railway channels at 2.35 GHz, based on radio channel measurements under viaduct and U-shape cutting scenarios. We characterize the K-factor from the perspective of narrowband, wideband and delay, according to the measured channel responses. The time-frequency varying narrowband K-factors in two scenarios are analyzed an...

A large number of passengers in Austria commute on a daily basis by using High Speed Trains (HSTs). Nowadays, a large amount of passengers can be considered active mobile phone users. Due to increased numbers of mobile users, the capacity problem is considerably introduced. To deal with this issue, the railway company in Austria (ÖBB) has implemented Wi-Fi on-board the railjet high speed trains...