This paper uses Gaussian interval type-2 fuzzy set theory on historical traffic volume data processing to obtain a 24hour prediction of with high precision. A K-means clustering method is used in this get 5 minutes variation as input for the sets which can reflect distribution one statistical period. Moreover, cluster largest collection obtained by calculated key parameters sets, mean and standard deviation membership function. Using range leads forecasting output ability describing possible...

Accurate and real-time positioning is an important part of train control, which crucial for safety assurance high speed railway in China. For GPS based scheme, the signal unavailability interference could not be completely solved with current configuration mode. In this paper, from requirements high-speed railways, on consideration availability fault-tolerant performance, integrated system formed by integration Compass. The structure function are given, nonlinear filter solution information...

Train integrity resolution is an important part of a train operation control system. In current systems, achieved by using information on the track circuit or wind pressure. However, both approaches have limitations; utilization circuits requires high construction and maintenance costs, pressure approach has to overcome problem low update rate false alarm caused incident pipe leakage. this paper new method based double-differenced carrier phase relative positioning proposed. To improve...

Real-time positioning is an important part of the modern train control system. An efficient method to improve accuracy and reliability multi-sensor integrated system, GNSS introduced existing based on odometer (ODO) in this paper, where error source ODO are analyzed, effective slide slip detection proposed with integration odometer. Experimental results demonstrate could realize high accuracy.

Collision avoidance support for high-speed trains is a major safety target railway operators. This paper presents new concept train collision early warning system (TCEWS) that addresses the problem of train-to-train collisions. Similar to existing systems used by networks, TCEWS approach allows drivers “see” its neighborhood leading and have up-to-date accurate knowledge traffic situation in vicinity. However, architecture operational principles certain differences. The core idea build...

Integrity of global navigation satellite system (GNSS) positioning is one major concern for the GNSS-based railway train control systems due to critical safety requirements. In this paper, we propose a map-enhanced receiver autonomous integrity monitoring (RAIM) method satellite-based trains, which could benefit from autonomy fault detection and exclusion (FDE) without relying on additional sensors in location determination (LDS). With proposed RAIM solution, spatial constraint fixed tracks...

Safe train localization is the key element to provide reliable Position, Velocity and Timing (PVT) information for Automatic Train Operation (ATO), will enable future applications such as moving block, real-time safety margin estimation adjacent trains, many more. The safety-assured under repeated tests along test railway line providing acceptable performance level allow Global Navigation Satellite Systems (GNSS) part of unit be adopted into elements ATO system perform function. But real...

Nowadays, the energy-saving optimization problem has gradually become a hot spot in subject of high-speed train control. Traditional static trajectory planning is designed offline according to preplanned timetable, but ignored are uncertainties parameters because line conditions and other factors process operation. Thus, previous operation strategy may not suit remaining section. The cooperative control for multiple trains was investigated with aim conserving energy between successive...

Real-time and precise train position determination is of great significance in operation control. In recent years, the utilization satellite navigation technology railway positioning has become a new trend. When enters or passes through station with canopy, observing condition satellites will be greatly constrained, quality cannot fulfil performance requirements positioning, i.e. accuracy, continuity availability. The ground-based Pseudolite (PL) allows us to assist Global Navigation...

The speed and localization information of the high-speed trains are essential significant for train control systems. occurrence faults in SDUs (Speed Distance Units) will affect accuracy effectiveness location reports to ensure operation safety trains. fault detection diagnosis method focused this paper. By using on-board GPS (Global Positioning System) measurements, we propose a parallel-filtering-based architecture detecting odometers that use pulse-counting estimate travelling distance...

This paper studies Multi-Resolution Modeling (MRM) method of Train Control System based on multi resolution modeling and analyses in detail about aggregation-disaggregation theory as well consistency MRM. Due to the characteristics being multi-node distributed, subsystems using different methods concerning hierarchy a HLA-based multi-train simulation platform for is built taking RTI time management strategy realize multi-resolution System. The results show that this could describe its...

Train positioning is a fundamental function which required by many location-based railway applications. The rapid development of satellite navigation technology enables better cost-effectiveness for the safety-critical train control systems. When using BDS (BeiDou Navigation Satellite System) in control, it has to be ensured module takes full consideration potential safety risk, and integrity monitoring great necessity fulfill requirement. In this paper, we expand coverage integration track...

The use of a Global Navigation Satellite System (GNSS) is significant requirement next-generation railway train control systems. As one effective approach to integrate the GNSS positioning service into system, virtual balise (VB) solution makes it compatible with current system specifications and ensures benefits in terms cost efficiency autonomy train-borne subsystem. To create VB that performs normal functions, standard suggests capture interval (CI). However, fixed CI cannot adapt...

Due to the poor environment in West of China, this research firstly analyzes application requirements low density, cost and high reliability, then focuses on integrated BeiDou Navigation Satellite System (BDS) Inertial (INS) achieve seamless positioning. The map-matching technology switch section is studied its process discussed tested, whose accuracy can rise up 98.6%. On basis above research, a train position system constructed. test indicates positioning precision less than 3 meters...

Train control system works to the train speed, ensure traffic safety and improve transport capacity where it is necessary conduct systematic research on speed-distance mode curve. The development application of ETCS curve introduced basis fundamental principles classifications. classification theory focused while algorithm simulation briefly discussed. model core technology in protection foreign countries which accounts for great significance our study CTCS model.

Abstract Most of the timing scenarios call for need precise delay measurement and compensation coaxial cables. However, experience to date has shown that cable can only be characterized by other physical quantities such as time interval or group delay, etc. In this paper, principles three existing commonly used methods were discussed various factors affect results analyzed. Measurement setups corresponding uncertainty budgets techniques then designed explained. With aim quantify numerical...

Summary Due to the characteristic of traveling wave dispersion, shape distortion is caused, and technical difficulty fault location increased. The frequency analysis research signal catenary line are presented, based on wavelet theory discrete Fourier transform. At first, information extracted by DFT, which turns that amplitude each its distribution characteristics clarified. Then, verification rely theory. simulation results show obvious, it has great significance for further understanding...

Abstract The concept of electronic track map has been introduced and researched in many satellitebased railway train positioning location-based systems. It should characterize the tracks their key objects facilities with a satisfied accuracy completeness. Based on application requirements, design building maps be accordance matching approach, moreover, considering integrity effect that is decisive to safety. This paper introduces paradigm for generation. According satellite-base scheme,...

Relative to single Global Navigation Satellite System (GNSS) measurements, i.e., the measurements from a GNSS system, code, and receiver, multi-GNSS for time transfer could improve reliability provide better short-term stability. Previous studies applied equal weighting different systems or receivers, which, some extent, revealed improvement in additional stability combination of two more kinds measurements. In this study, effects weight allocation multi-measurements were analyzed, federated...