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Dear IGS colleagues,<br>
<br>
The absolute IGS antenna correction file (igs14_wwww.atx) has been <br>
updated. The new release is called 'igs14_1986.atx'. It contains the
<br>
following changes:<br>
<br>
1) Update of the FOC-1 to FOC-14 (E201 - E214) PCO and PV with
calibrated values published by the GSA:<br>
-
<a class="moz-txt-link-freetext" href="https://www.gsc-europa.eu/sites/default/files/sites/all/files/ANTEX_GAL_FOC_IOV.atx">https://www.gsc-europa.eu/sites/default/files/sites/all/files/ANTEX_GAL_FOC_IOV.atx</a><br>
-
<a class="moz-txt-link-freetext" href="https://www.gsc-europa.eu/support-to-developers/galileo-iov-satellite-metadata">https://www.gsc-europa.eu/support-to-developers/galileo-iov-satellite-metadata</a><br>
<br>
<br>
2) According to the NAGU 2017047 4 new Galileo FOC satellites have
been launched on 12. December 2017<br>
(FOC-15 to FOC-18, 2017-079A to 2017-079D):<span style="color:
rgb(0, 0, 0); font-size: 14px; font-style: normal;
font-variant-ligatures: normal; font-variant-caps: normal;
font-weight: 400; letter-spacing: normal; text-align: left;
text-indent: 0px; text-transform: none; white-space: normal;
word-spacing: 0px; -webkit-text-stroke-width: 0px;
background-color: rgb(240, 240, 240); text-decoration-style:
initial; text-decoration-color: initial; display: inline !
important; float: none;"></span><br>
E21 (E215)<br>
E25 (E216)<br>
E27 (E217)<br>
E31 (E218)<br>
<br>
The following PRELIMINARY phase center offset (PCO) values were
assigned:<br>
(Preliminary PCO values (no PV) for FOC-15 to FOC-18 using mean
values of FOC-3 to FOC-14 ):<br>
<br>
Frq PCO_X PCO_Y PCO_Z<br>
---- --------- -------- ---------<br>
E05 120.00 -10.00 620.00<br>
E07 120.00 -10.00 660.00<br>
E06 120.00 -10.00 680.00<br>
E01 120.00 -10.00 720.00<br>
E08 120.00 -10.00 640.00<br>
<br>
<br>
NAGU message 2017047:<br>
<pre style="color: rgb(0, 0, 0); font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; word-wrap: break-word; white-space: pre-wrap;">NOTICE ADVISORY TO GALILEO USERS (NAGU) 2017047
DATE GENERATED (UTC): 2017-12-15 15:10
NAGU TYPE: GENERAL
NAGU NUMBER: 2017047
NAGU SUBJECT: LAUNCH OF GSAT0215, GSAT0216, GSAT0217 AND GSAT0218
NAGU REFERENCED TO: N/A
START DATE EVENT (UTC): 2017-12-12 18:36
END DATE EVENT (UTC): N/A
SATELLITE AFFECTED: GSAT0215, GSAT0216, GSAT0217, GSAT0218
EVENT DESCRIPTION: GALILEO SATELLITES GSAT0215 (SVID 21), GSAT0216 (SVID 25), GSAT0217 (SVID 27) AND GSAT0218 (SVID 31) WERE LAUNCHED ON 2017-12-12 AT 18:36 UTC. GSAT0215, GSAT0216, GSAT0217 AND GSAT0218 ARE PLANNED TO BE POSITIONED IN SLOTS A03, A07, A04 AND A01 OF THE CONSTELLATION. USERS WILL BE ADVISED OF AVAILABILITY OF SIGNALS FOLLOWING COMPLETION OF COMMISSIONING ACTIVITIES.
<a class="moz-txt-link-freetext" href="https://www.gsc-europa.eu/sites/default/files/NOTICE_ADVISORY_TO_GALILEO_USERS_NAGU_2017047.txt">https://www.gsc-europa.eu/sites/default/files/NOTICE_ADVISORY_TO_GALILEO_USERS_NAGU_2017047.txt</a>
</pre>
<br>
<br>
The updated antenna correction model is available at<br>
<a class="moz-txt-link-freetext" href="ftp://ftp.igs.org/pub/station/general/igs14_1986.atx">ftp://ftp.igs.org/pub/station/general/igs14_1986.atx</a><br>
or<br>
<a class="moz-txt-link-freetext" href="ftp://ftp.igs.org/pub/station/general/igs14.atx">ftp://ftp.igs.org/pub/station/general/igs14.atx</a><br>
<br>
<br>
With best regards,<br>
Arturo Villiger<br>
on behalf of the IGS Antenna Working Group<br>
<br>
<br>
<br>
-- <br>
------------------------------------------------------------------------<br>
Arturo Villiger<br>
Astronomical Institute<br>
University of Bern<br>
Sidlerstrasse 5<br>
CH - 3012 Bern / Switzerland<br>
<br>
phone ++41 31 631 85 06<br>
fax ++41 31 631 38 69<br>
<a class="moz-txt-link-abbreviated" href="mailto:arturo.villiger@aiub.unibe.ch">arturo.villiger@aiub.unibe.ch</a><br>
------------------------------------------------------------------------<br>
<br>
<br>
<br>
<pre class="moz-signature" cols="72">--
------------------------------------------------------------------------
Arturo Villiger
Astronomical Institute
University of Bern
Sidlerstrasse 5
CH - 3012 Bern / Switzerland
phone ++41 31 631 85 06
fax ++41 31 631 38 69
<a class="moz-txt-link-abbreviated" href="mailto:arturo.villiger@aiub.unibe.ch">arturo.villiger@aiub.unibe.ch</a>
------------------------------------------------------------------------ </pre>
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