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CZEPOS a Multipurpose Positioning System for the Czech Republic

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CZEPOS - an active network of permanent GNSS stations in the Czech Republic ... to foster the implementation of GNSS techniques in the Czech Republic ... – PowerPoint PPT presentation

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Title: CZEPOS a Multipurpose Positioning System for the Czech Republic


1
CZEPOS a Multipurpose Positioning System for
the Czech Republic
Czech Office for Surveying, Mapping and Cadastre
  • Oldrich Paek Czech Office for Surveying,
    Mapping and Cadastre
  • Jan Reznícek Land Survey Office
  • Jakub Kostelecký Research Institute of Geodesy,
    Topography and Cartography

2
CZEPOS
  • CZEPOS - an active network of permanent GNSS
    stations in the Czech Republic
  • built up by the Czech Office for Surveying,
    Mapping and Cadastre and its organizations
  • Land Survey Office
  • Research Institute of Geodesy, Topography and
    Cartography

3
Objectives
  • to foster the implementation of GNSS techniques
    in the Czech Republic
  • to support a broad spectrum of GNSS based
    applications in positioning and navigation
  • to economize precise geodetic surveying and to
    bring better comfort to surveyors
  • to harmonize the national geodetic infrastructure
    with the EU countries and to facilitate the
    implementation of ETRS

4
Benefits for Users
  • Navigation community CZEPOS enables the user
    with a simple receiver to make a real time
    positioning with an accuracy of some decimeters
  • Surveying and geodetic community CZEPOS enables
    to speed-up and to economize precise geodetic
    measurements (one geodetic receiver is
    sufficient)

5
Services and Products
  • Real-time services
  • additional information from the reference station
    for DGNSS (differential GNSS)
  • RTK (Real-Time Kinematic) using VRS (Virtual
    Reference Station) - a combined solution based on
    the data from several reference stations when the
    user is provided with a software generated
    additional information from a near-by virtual
    reference station
  • RTK using FKP (Flächenkorrekturparameter - Areal
    Correction Parameters) - a software generated
    additional information from a reference station
    is extended by correction parameters that enable
    to use it even at longer distances from the
    reference station
  • Post-processing products
  • data files for further processing

6
Products for Navigation
  • Navigation community is mainly interested in a
    real-time DGPS service
  • DGPS service (like other real-time services) will
    be provided
  • through a phone link via ISDN Router supposing
    that the user has an access to a GSM operator
  • through the internet - supposing availability of
    a mobile phone GPRS option the user can connect
    via internet to the access server and get
    necessary data in the Ntrip format

7
Network Structure
  • 26 stations communicating with three mutually
    linked to 3 central servers
  • servers are located at the Land Survey Office
  • 22 stations are located at cadastral offices
  • 4 external stations are operated by academic
    institutions through the VESOG network

8
Distribution of Stations
  • red - operated by cadastral offices, green -
    operated by academic institutions

9
Hardware and Software
  • Czech Office for Surveying, Mapping and Cadastre
    put out a public tender in May 2004 ? receivers
    Leica GRX 1200 Pro, antennas Leica AT504 Choke
    Ring
  • External stations ? receivers Ashtech, Topcon
  • absolute antenna calibration
  • station control data for post-processing ?
    Leica Software Spider
  • real-time services ? software GNSMART of Geo
    Company

10
Implementation Plan I
  • 6 stations have been operational since December
    2004 (Pardubice, Svitavy, Jihlava, Dacice, Tábor,
    Príbram).

11
Implementation Plan II
  • software GNSMART currently being installed ?
    launch of real-time services and post-processing
    products from the first six stations
  • further 11 stations will be set into operation in
    2005
  • complete network will be finished in 2006

12
CZEPOS and EUPOS
  • Organizations of the Czech Office for Surveying,
    Mapping and Cadastre participate in the EUPOS
    (European Positioning System) project directed
    towards establishment GNSS permanent networks in
    the Central- and East European countries - see a
    special presentation on this topic
  • Incorporation of CZEPOS into EUPOS will be
    possible by necessary SW and HW extension and
    upgrade following from the introduction of the
    new European GNSS system GALILEO

13
Conclusions
  • CZEPOS is a part of a new geodetic infrastructure
    for referencing spatial geoinformation
  • more information
  • http//czepos.cuzk.cz/ (in Czech)

14
Thank you for your attention
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