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VIIth Transport Systems Telematics International Conference 17‐19 October 2007, Katowice‐Ustroń, Poland
Główny Urząd Geodezji i Kartografii ul. Wspólna 2, 00‐926 Warszawa tel. +48 22 661 80 17 fax. +48 22 629 18 67 e‐mail: gugik@gugik.gov.pl www.gugik.gov.pl
The Project is co‐financed by the European Union,
European Regional Development Fund
THE PRECISE SATELLITE POSITIONING SYSTEM
ASG‐EUPOS AND ITS POTENTIAL APPLICATIONS IN TRANSPORT MOŻLIWOŚCI WYKORZYSTANIA SYSTEMU PRECYZYJNEGO POZYCJONOWANIA SATELITARNEGO
ASG‐EUPOS W TRANSPORCIE
ARTUR ORUBA ASG‐EUPOS National Management Center
Head Office of Geodesy and Cartography
Wspólna 2, 00‐926 Warszawa, Poland
tel. 0048 22 737 54 31
e‐mail: artur.oruba@gugik.gov.pl
www.asgeupos.pl
ABSTRACT
The project of building a unified precise satellite positioning system in Poland, carried out by the Head Office of Geodesy and Cartography, is based upon the idea of European Position Determination System (EUPOS). The ASG‐EUPOS system uses a network of GNSS reference stations to enable the user determine real‐time position with high precision using differential observation methods. Such system may well be used in any applications that need differential (ie. DGNSS) position determination, such as fleet management, navigation and many more.
STRESZCZENIE
Realizowany przez Główny Urząd Geodezji i Kartografii projekt budowy systemu precyzyjnego pozycjonowania satelitarnego na obszarze Polski oparty jest na idei ogólnoeuropejskiego systemu EUPOS. Polski system ASG‐EUPOS wykorzystuje sieć naziemnych stacji referencyjnych GNSS w celu umożliwienia jego użytkownikom określenia z wysoką dokładnością pozycji w czasie rzeczywistym, z wykorzystaniem różnicowych metod pomiaru. System ten może zostać z powodzeniem wykorzystany wszędzie tam, gdzie wymagane jest zastosowanie metod różnicowych do zwiększenia dokładności (np. DGNSS), między innymi w zarządzaniu flotą pojazdów, nawigacji i in.
Artur Oruba
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THE ASG‐EUPOS SYSTEM STRUCTURE
The ASG‐EUPOS system is based on a network of ground control points on which signals from GNSS (GPS, GLONASS and in the future also GALILEO) satellites are being constantly observed. It consists of 94 reference stations in Poland and up to 30 stations in neighboring countries that take part in the EUPOS project [2] [3] [5] [6]. According to the EUPOS standards, the ASG‐EUPOS system is being built based on the following rules [4]:
• the mean distance between neighboring reference stations equals around 70 km,
• the stations are regularly distributed, creating a uniform network that covers whole Polish territory,
• the network assimilates all existing Polish EPN and IGS stations,
• reference stations’ coordinates are being estimated in the ETRS’89 (European Terrestrial Reference System ‘89) and in local coordinate systems used in Poland,
• reference stations observe GPS and GLONASS satellites, and are compatible with the GALILEO system when it is available,
• precise dual‐frequency GNSS receivers are being used on all the stations,
• the position of all ground control points will be regularly controlled.
Additionally, the system is based on the rule of open architecture, which assures the possibility to increase not only the number of reference stations included, but also the functionality of services offered [8]. The whole system is planned to be a fundamental reference to all the measurements in Polish national reference frames. The system provides a uniform and homogenous spatial reference which is also available remotely and therefore enables to use this uniform geodetic framework even outside classic geodetic applications.
The raw observational data from reference stations are being constantly transferred – via high‐speed WAN network – to National Management Centers in Katowice and Warsaw [2] [3] [5] [9]. There all the processing takes place, including the control of system stability and provision of services. The services provided (tab. 1) are divided roughly into the real‐time and postprocessing ones. Those based on the real‐time estimation of user’s position are related to calculation of DGNSS or RTK corrections. The postprocessing services provide very precise position information, but require long enough observation sets and cannot be used in real‐time applications.
General division
Service name
Measurements method
Data transmission
Estimated precision
Minimum hardware requirements
Real‐time services
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GSM/ FM1
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KODGIS 0.2 – 0.5 m L1 GPS receiver, communication module
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L1/L2 GPS receiver, communication module
Postprocessing services
POZGEO Static/ kinematic (postprocessing)
Internet/ hardcopy
0.01‐0.10 m L1 GPS receiver
POZGEO D
Tab. 1. Services provided by the ASG‐EUPOS system to the users [2] [3] [5] [6].
1 FM transmission is planned in further future and is correlated with the eventual increasing number of system users.
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Artur Oruba, The precise satellite positioning system ASG‐EUPOS and its potential applications in transport 5
THE ASG‐EUPOS PROJECT REALIZATION
The main goal of the ASG‐EUPOS project is to establish a nationwide network of ground reference stations and a Management Center for sharing corrections necessary for determining the position from GNSS observations with high precision in Poland.
As a part of the region‐wide EUPOS project, the ASG‐EUPOS project started on the 2nd of August 2005 when a new contract for subsiding the build of the ASG‐EUPOS system was signed. The project is being financed within the EU Sectoral Operational Programme “Improvement of the Competitiveness of Enterprises” 2004—2006 (SOP ICE), Measure 1.5 “Development of a system of entrepreneurs’ access to information and public services on‐line”. The Managing Authority is the Ministry of Regional Development, the Department of European Funds within the Ministry of Science and Higher Education implements the project. The President of the Head Office of Geodesy and Cartography, as the Final Recipient, established the project Steering Committee and two counseling bodies: the Programme Council and the Team of Experts. [3] [5] [6]
In the beginning of 2007 (January, 2nd) a final contract for establishing the ASG‐EUPOS system, including the delivery of a number of GPS mobile survey sets, was signed [3] [5] [6]. This contract additionally includes connecting the existing and foreign border reference stations to the system. The main stages of the ASG‐EUPOS project have been listed below in table 2.
July 2004 the ASG‐EUPOS system general concept
August 2005 signing of the contract for subsiding the build of the system
September 2005 the beginning of the ASG‐EUPOS project
January 2006 technical project concept
July 2006 establishment of the National Management Center
August 2006 the system establishment put out to tender
January 2007 signing of the contract on the system establishment
April‐May 2007 verification of reference stations location
June‐September 2007 reference stations installation procedure
September‐October 2007 the beginning of the system testing procedure
October‐November 2007 the calibration campaign
December 2007 finalization of the ASG‐EUPOS project
January 2008 full system operability
Tab. 2. The ASG‐EUPOS project realization schedule [2] [6].
PRESENT AND POTENTIAL APPLICATIONS IN TRANSPORTATION SYSTEMS
Most issues related to transportation, such as traffic guidance, fleet management, telematics in traffic, navigation, etc. require spatial reference to describe them [7]. Usually in those applications, local GNSS reference stations are needed to produce DGNSS corrections in real‐time. But various transportation applications need different precision and availability levels of services. The ASG‐EUPOS system enables adaptation of sufficient services in various transportation applications, as required.
The existing – similar to ours – German SAPOS positioning system [8] is being used in various systems and applications associated with transport. It is commonly known that only widespread reference systems like
Artur Oruba, The precise satellite positioning system ASG‐EUPOS and its potential applications in transport 6
SAPOS or EUPOS are profitable and economically reasonable [7]. That is why the ASG‐EUPOS system might be well used in the following transportation applications, providing cost‐effective solution for transport‐related systems:
• municipal transportation vehicles ‐ scheduling, control and guidance. In this case the GNSS relative positioning provided by ASG‐EUPOS could increase punctuality and quality of services in bus and tram networks, increase flexibility in changing the routes, enable traffic lights control and dynamic passenger‐directed information on connections. This solution could significantly reduce costs compared to very ineffective “traditional” methods of human based (manual) vehicle control systems. As an example, the SAPOS system plays an important role in the BVG (ger. Berliner Verkehrsbetriebe) Vehicle Scheduling and Control System [7].
• public security fleet management. Similar to potential applications in municipal transport, the system gives the possibility to enchance public security effectiveness by helping the police with precise traffic control, changes of routes while escorting important visitors, navigation and reporting on the fleet of police cars. In Germany, Berlin this has been implemented in ZVkD (Central Police Traffic Ser‐vice) [7].
• ambulance fleet management. Relative positioning (ie. ASG‐EUPOS system), uniform in such a large area as Poland, gives the opportunity to navigate and control the position of all ambulance vehicles in the selected area. Additional sensors, integrated in one multifunctional system, ie. SWD‐KPR (Commanding Support System of Krakow Emergency Service), enable full control over ambulance vehicles and crew. This leads to cost reduction and work optimization, as well as integration with other rescue services [1].
• precise lane traffic steering. Positioning with ASG‐EUPOS gives the opportunity to use precise positioning data to navigate vehicles in traffic and collect information on traffic intensity and flow to adjust infrastructure to sufficient needs.
• marine navigation in shipyards and river transport. High precision of position calculated with the ASG‐EUPOS corrections within various available services is crucial when navigating in shallow waters or shipyards.
• railway transport management and scheduling. Real‐time position of trains enables more accurate and remote management, as well as always up‐to‐date information on timetables and possible train delays for passengers.
Because the ASG‐EUPOS system is not yet fully operational, many possible applications, including those in the area of transport, haven’t been currently revealed.
REFERENCES
[1] ANTOSIEWICZ M. (2007), Wykorzystanie systemów pozycjonowania precyzyjnego dla potrzeb ratownictwa (The use of precise positioning systems in rescue applications), presentation on the regional conference “Applications of the multifunctional precise satellite positioning system ASG‐EUPOS”, Warszawa, 21 March 2007
[2] ASG‐EUPOS (2007), Information about the ASG‐EUPOS system, October 2007, http://www.asgeupos.pl/
[3] BOSY J., GRASZKA W., LEOŃCZYK M. (2007), ASG‐EUPOS ‐ A multifunctional precise satellite positioning system in Poland, European Journal of Navigation, vol. 5 (4) September 2007, pp. 2‐6
[4] EUPOS (2007), EUPOS – General Information, October 2007, http://www.eupos.org/
Artur Oruba, The precise satellite positioning system ASG‐EUPOS and its potential applications in transport 7
[5] GRASZKA W. (2007) Wielofunkcyjny system precyzyjnego pozycjonowania satelitarnego ASG‐EUPOS (Multifunctional precise satellite positioning system ASG‐EUPOS), Geodeta, Geoinformational Magazine, vol. 2 (141), Feb. 2007, pp. 4‐8
[6] GUGiK (2006), ASG‐EUPOS ‐ A multifunctional precise satellite positioning system – information brochure, The Head Office Of Geodesy and Cartography, Warszawa 2006
[7] ROSENTHAL G. (2005), Optimization of traffic management and traffic telematics by multifunctional GNSS services, presentation at METROPOLIS’05 BERLIN “The future of the City”, VIII METROPOLIS World Congress, Berlin, 11‐15 May 2005
[8] SAPOS (2007), The SAPOS Booklet and Flyer, October 2007, http://www.sapos.de/
[9] WASKO S. A. (2007), Wykonawczy projekt techniczny wielofunkcyjnego systemu precyzyjnego pozycjonowania satelitarnego ASG‐EUPOS (Technical project of multifunctional precise satellite positioning system ASG‐EUPOS), WASKO S. A., Geotronics Sp. z o. o., Trimble BV, 2007