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<tt>Authors: I. Romero, R. Schmid<br>
Subject: Call for abstracts for IGS Workshop Plenary #7 <br>
</tt><br>
<p class="MsoPlainText"><b><u>Thursday February 11th, Plenary 07:
Infrastructure and Antenna Calibration<o:p></o:p></u></b></p>
For this plenary session, and the two related poster sessions we
welcome oral presentations and posters covering issues related to
IGS infrastructure, and antenna calibration in-line with the
descriptions below.
<p class="MsoPlainText"><b>Infrastructure (Nacho Romero)<o:p></o:p></b></p>
<p class="MsoPlainText">The IGS Infrastructure is the backbone of
all the IGS services, encompassing stations, data formats, data
storage, etc. In this session we will cover the current state of
the IGS infrastructure elements to provide an overview of the
state of the evolving IGS station network, data centers, data
formats, station information, etc. Of these important elements the
handling of station metadata is being addressed to ensure that the
configuration information of all the participating stations can be
shared via automated protocols between participating institutions
and the IGS Central Bureau. A second essential element in the IGS
data handling has been incorporating of all Rinex 3 files into the
standard data repositories at all the data centers. The IGS has
also incorporated most of the MGEX stations to the regular station
network, and we have been increasing worldwide station coverage in
the IGS by contacting more station operators currently outside the
IGS. </p>
The IGS Infrastructure is quickly adapting to encompass new
satellite signals, increasing data types and frequencies, and
providing better geographical coverage , all of these are very
significant areas of interest.<br>
<br>
<p class="MsoPlainText"><o:p></o:p><b>Antenna Calibration (Ralf
Schmid)</b></p>
In July 2015, the absolute IGS antenna phase center model was
complemented with conventional and/or manufacturer-specific
satellite antenna phase center offset (PCO) values for the new GNSS
(Galileo, BeiDou, QZSS, IRNSS). For lack of information on the
dependence of the phase center on the observation direction, the
corresponding phase center variations (PCVs) were set to zero for
the time being. Both PCO and PCV values will have to be replaced by
estimates from global GNSS analyses in the coming years. <br>
<br>
Further effort is also needed with respect to the estimation of GPS
satellite antenna corrections. A combined processing of terrestrial
and low Earth orbiter data would allow the IGS to provide an
independent estimate for the terrestrial scale. Azimuth-dependent
PCVs should be considered at the same time. <br>
<br>
Concerning the receiver antennas, the integration of chamber
calibration values (for the new GNSS) into the IGS model as
recommended during the last IGS Workshop is still under discussion.
Besides, new calibration institutions become operational. In order
to avoid systematic errors, there is a need for careful comparisons
of independent calibration results. Multipath mitigation or the
possible benefit from individual antenna calibrations are other open
issues.<br>
<br>
<br>
<br>
Please submit your abstract for consideration to the plenary or the
poster sessions here;<br>
<br>
<a class="moz-txt-link-freetext"
href="http://igsworkshop2016.org/index.php/abstract-submission/">http://igsworkshop2016.org/index.php/abstract-submission/</a><o:p></o:p>
<p class="MsoNormal"><br>
Abstract Deadline: November 25<sup>th </sup><o:p></o:p></p>
Early bird Registration Deadline: January 1<sup>st</sup> 2016<o:p></o:p>
<br>
<br>
<br>
<br>
<pre class="moz-signature" cols="72">--
Best regards,
Nacho
_______________________________________________________________
Ignacio (Nacho) Romero
Aerospace Engineer, PhD
SAC @ ESA/ESOC/HSO-GN
IGS Infrastructure Committee
<a class="moz-txt-link-abbreviated" href="http://www.canaryadvancedsolutions.com">www.canaryadvancedsolutions.com</a>
_______________________________________________________________
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Gracias por su colaboracion.
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