All presentations and posters will be available from the EUREF web site www.euref.eu/euref_symposia_meetings.html
Session 1: Activities of the EUREF Technical Working Group
Chairpersons: Johannes Ihde, Carine Bruyninx
This session is dedicated to the activities of the EUREF Technical Working Group
Session 2: New developments in GNSS Networks
Chairpersons: Heinz Habrich, Alessandro Caporali
This session shows new developments in GNSS networks in the broadest sense. The presentations have a close relation to the EPN, but also other regional and global networks will be addressed. The term GNSS network considers aspects of tracking site operation, GNSS space/user segments as well as transferring and holding of GNSS observations and products. The deployment of twenty one operational GLONASS satellites in January 2011 and the announcement of the first GLONASS-K satellite launch using the GPS compatible CDMA signal modulation for 2011continues the development towards a multi-system satellite constellation. It will be augmented by the Galileo in orbit validation (IOV) phase providing the full spectrum of Galileo satellite signals and the further deployment of the Chinese COMPASS/Beidou constellation. The combination of various satellite systems evoked the development of enhanced data formats, such as RINEX version 3 for data files and the proposed “Multi-System Message” RTCM format for data streams. The extended satellite constellation asks station operators to install combined receivers that are capable to track GPS, GLONASS and Galileo signals. Furthermore new satellite signals such as L2C and L5 are now broadcasted by newly launched satellites. The potential of new satellite constellations and frequencies will be shown, as well as today’s realisation in GNSS networks. Real-time applications became a challenging tool during the last years. Technologies for streaming observation data, real-time analysis of data and providing the products, such as satellite orbits and clocks, in real-time are now operational ( e.g., the IGS Real Time Pilot Project with contributions from EUREF, or the BNC software). Experiences in operating a network of stations that make their data available in real-time and applications of real-time products will be discussed.
Session 3: Modelling the Earth with GNSS
Chairpersons: Jan Dousa, Rui Fernandes
Latest improvements in modelling the lower and upper atmosphere proved that GNSS could serve as a valuable and efficient tool for sensing the Earth atmosphere for various purposes - numerical weather prediction, climate study, space weather monitoring etc. With advanced technology, new analysis models and efficient techniques, the monitoring of the solid Earth deformations or variations in the liquid Earth provides further expectation on GNSS in future too. The session solicits contributions with new achievements in modelling/monitoring the solid and liquid Earth and its atmosphere with GNSS, contributions demonstrating new approaches and products, their validation and exploitation.
Session 4: Mitigation of GNSS error sources
Chairpersons: Elmar Brockmann, Günter Stangl
Site effects and propagation effects still control the
accuracy with which GNSS phase tracking data can be modelled. Site effects
address the displacements of the physical position of the GNSS antenna, and therefore
include monumentation, antenna calibration, tidal displacements and surface
mass loading. Propagation effects address effects due to the troposphere,
ionosphere or multipath. The influence of these effects on GNSS-derived
products (such as station coordinates, station velocities, zenith total delay
estimates for numerical weather prediction, troposphere horizontal gradients,
etc.) is an area of advanced research. Some groups in Europe started with
re-processing activities in the last years, in order to generate results which
are based on an homogeneously set of models. A new special project within EUREF
has recently be started in order to coordinate these activities.
Session 5: Height, Gravity, Geoid, and Combination of Techniques
Chairperson: Markku Poutanen, Jaakko Mäkinen
Gravity-related heights, i.e. heights based on potential
differences remain fundamental. Definition and realization of the European
Vertical Reference System (EVRS) is under way, and many countries are renewing
or updating their height systems. Simultaneously, the realization of heights
using 3-D coordinates and geoid models is continuously improving, supported by
the gravity satellite missions GRACE and GOCE. Gravity methods are increasingly
contributing to the maintenance of reference frames. Combining different
techniques and data access in a systematized way will be done under the
umbrella of the Global Geodetic Observation System GGOS and regionally, under
the European Combined Geodetic Network ECGN.
Session 6: Improvements and densification of ETRS89
Chairperson: João Torres, Martin Lidberg
The European Terrestrial Reference Frame (ETRS89) is
currently the basis for geo-referencing in most of the European continent, and
will play a key role in INSPIRE.
Session 7: National Reports
Chairperson: Jan Krynski, Wolfgang Söhne
National surveying and mapping authorities of European countries report in this session on all branches of their activities, from geodetic surveying to the establishment of geometric reference systems and positioning, to gravimetric and height related tasks, and to outstanding developments in geo-information systems. The implementation of EUREF results on national level is of particular interest. Due to the limited time, which is typically only a few minutes for each country, the reports must focus on new developments since the last report given at a EUREF symposium.
Closing Session, Resolutions, EUREF Symposium 2011
Chair: NN, Mark Greaves, João Torres