Proceedings, XXth congress: Proceedings, XXth congress

Altan, M. Orhan

Bibliographic data

Multivolume work

Persistent identifier:: 1663674213

Title:: Proceedings, XXth congress

Sub title:: Istanbul, 12 - 23 July 2004

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 1663674213

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.; Auch bezeichnet als XXth International Congress for Photogrammetry and Remote Sensing

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing, Commission Primary Data Acquisition

Document type:: Multivolume work

Volume

Persistent identifier:: 166368779X

Title:: Proceedings, XXth congress

Scope:: IV, 226 Seiten

Year of publication:: 2004

Place of publication:: Istanbul

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 166368779X

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(35,B8)

Language:: English

Additional Notes:: Erscheinungsdatum des Originals ist aus dem Copyrightjahr ermittelt.

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Altan, M. Orhan

Corporations:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Adapter:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Founder of work:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Other corporate:: International Society for Photogrammetry and Remote Sensing, Congress, 20., 2004, Istanbul; International Society for Photogrammetry and Remote Sensing

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2019

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: INTEGRATION OF GIS, GPS AND GSM FOR THE QINGHAI-TIBET RAILWAY INFORMATION MANAGEMENT PLANNING Bin Wang, Qingchao Wei, Qulin Tan, Shonglin Yang, Baigen Cai

Document type:: Multivolume work

Structure type:: Chapter

tanbul 2004 >CSAS) onitors the arms when ut on-line ther hand, ork status It supports n delivery, dition, OIS munication n System ianagement | intelligent puter-aided stem, etc. € internet, ls, services, so provides reservation G3 ' $ pairs of the upward tons freight he Qinghai- ck sections bet line, so For the low conditions, implify the > especially righ safety, on used by icle to a control messaging On the one rom the on- 1 system, or us message ication can other hand, board units International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B-YF. Istanbul 2004 can be timely sent to the control centre. The control centre design is shown in Figure 2. 3 Vehicle operatin, information daladabe PUIS server S Information application server Dispatch Arorkstztion customer Maintenance man manager Figure 2. Control centre design The control centre stores messages in the database, which consists of spatial, attribute and graphical data. The GIS-based operator interface presents a digital map of the rail line and display locations uploaded by each on-board unit onto this map. The operator can change the area displayed and zoom in on any particular section of the railroad line to predetermined resolution. The locations for which alert/alarm conditions are reported will be clearly differentiated on the map with specific icons. The operator can see data content of any particular message by clicking the message icon on the map. The operator can use different queries in order to display on the interface only the information that the operator needs, for example, the operator can specify type of message to be displayed, vehicles of interest, time interval, and so on. In addition to the geographical map based display, the users have access to various reports generated automatically from the database (Lin et al., 2002; Derekenaris et al., 2001). 4.0 On-board Unit with GPS and Wireless Communications The on-board unit consists of communication satellite antennae, satellite positioning antennae, the on-board receiver system and communication interface devices, etc (shown in Figure 3). The on-board unit can continuously measure different parameters, tag the data with time and position information, reports irregular conditions. Po Communication satellite GPS satellite GSMR/ wireless cab signal GPS antenna Sensors Figure 3. On-board unit design The on-board unit use GPS to determine its geographical position. The signals emitted by satellite in the GPS are analysed at the time intervals defined in advance or simply on 73 request (Chakrabarti, et al., 1999). This enables the position of the mobile unit to be calculated. GPS signal cannot continuously provide the positioning information when GPS signal obstruction occurs in the tunnel or under the trees, so auxiliary devices and techniques are needed to provide supplemental positioning information for vehicles in above cases. GPS, transponder and odometers will be used to position the on-line train in the Qinghai-Tibet railway. GPS receivers will be fabricated on a circuit board, and transform the data to the desktop computer, thus realize real-time positioning and display. 4.3 Communication Links between On-board Monitors and the Control Centre The track circuit train control system will not be available to transmit information from trackside to on-board units in Qinghai-Tibet line mainly due to the bad environment along the line. There are two solutions under research. One is an intermittent radio based on cab signal system (Wang, et al., 2002; Ma et al., 2002). Instead of track circuit, an intermittent radio link between the on-board units and the station is used to transmit and receive the train control information within a radius of 3km from the station. The control centre is connected with the station by the optical fibre network. The other is real- time, continuous communication between the on-board units and the control centre. Until now, the specialists of China' Ministry of Railways are inclined to choose the second solution. So the paper focuses on the latter. Communication Links between on-board monitors and the control centre of the latter are shown in figure 4. ü E [o^ s El * GPS satellite CLAN Communication satellite & me =3 ES 00000 station station I | mmm Wireless communication Xining control ccentre Wire communication Golmud maintenance centre Figure 4. Communication link architecture S. CONCLUSIONS China' Ministry of Railways has produced a series of projects and operating solutions to simplify the organisation of rail traffic in highly mountainous areas. Even though the Golmud- Lhasa section of the Qinghai-Tibet main line will not be handling very substantial quantities of freight, it has been decided that the track foundations should be built to Class I standard for state railways. In addition, China' Ministry of Railways will greatly improve operation management of Qinghai-Tibet line after completion, as well as ensure the project quality during construction. The aims of QTIMP are oriented toward the latter. It provides the guidelines for the information management of the Qinghai-Tibet railroad.

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