[IGSMAIL-5819]: AGU session on Geodetic-Quality GNSS Stations

[Andria Bilich]

******************************************************************************
IGS Electronic Mail      22 Aug 15:16:03 PDT 2008      Message Number 5819
******************************************************************************

Author: Andria Bilich 

Dear colleagues,

We invite you to submit an abstract to session G18: "Geodetic-Quality
GNSS Stations: Location, Equipment, and Monumentation" at the 2008 AGU
Fall Meeting (15-19 December, San Francisco, CA). Session details are
given below. The deadline for abstract submission is 10 September 2359 UT.

============================================
Session G18:
Geodetic-Quality GNSS Stations: Location, Equipment, and Monumentation

http://www.agu.org/meetings/fm08/index.php/Program/SessionSearch/?show=detail&sessid=615

Description:
When interpreting GNSS site coordinates, geodesists and geophysists
focus their efforts on minimizing GNSS signal distortions (noise,
measurement error, and modeling error) while maximizing the precision
and accuracy of calculated positions. Recent studies have advanced the
characterization and removal of sources of noise and error in GNSS a
priori models, thereby improving the physical models used when computing
position from the observed signals and allowing refined analysis such as
the IGS reprocessing effort that is currently underway. Yet we recognize
that mitigating these signal distortion effects can be much more
challenging than avoiding the problems in the first place. Thus an
additional area that has begun getting attention is the more basic one
of a sites physical location, choice of monument type, and GNSS
equipment (receiver, antenna, mount, radome, etc.). In the upcoming
years, new GNSS systems are coming online and an increasing number of
permanent geodetic GNSS sites are being installed (by both private and
public institutions). At the same time some users are moving away from
analyzing 24-hour long data sets to shorter ones, and are increasingly
at the mercy of site-dependent errors. Thus, it is time for the geodetic
community to renew discussion on choices of GNSS sites, equipment, and
monuments to properly leverage data analysis advances at a time of GNSS
network expansion and changes in analysis methods.

We solicit papers on factors which affect the quality of geodetic GNSS
sites and the data collected at these stations. Topics include but are
not limited to site-dependent effects such as multipath (environmental
and equipment), sky visibility, and radio interference; time-varying
environmental effects (e.g. vegetation, rainfall, snow); and monument
type, stability, and location. Papers which discuss the characterization
and reduction of GNSS signal propagation errors in terms of site design
and choice of equipment are especially encouraged.

Conveners:
Giovanni Sella (1), Andria Bilich (1), Emma Hill (2), Chuck Meertens (3)
1) National Geodetic Survey
2) Harvard-Smithsonian Center for Astrophysics, Space Geodesy Group
3) UNAVCO

-- 
++++++++++++++++++++++++++++++++++++++++
Andria Bilich
Geosciences Research Division
National Geodetic Survey / NOS / NOAA
(e) Andria.Bilich at noaa.gov
(w) 303-497-5095
(f) 303-497-6513
325 Broadway St. E/GC2
Boulder, CO 80305
++++++++++++++++++++++++++++++++++++++++