[IGSMAIL-7356] igs08_1915.atx: Updated phase center offsets for Galileo satellites

Ralf Schmid schmid at tum.de
Fri Sep 23 02:35:42 PDT 2016


Dear IGS colleagues!

The absolute IGS antenna correction file (igs08_wwww.atx) has been 
updated. The new release is called 'igs08_1915.atx'. It contains the 
following changes:

1) The conventional MGEX phase center offset values for Galileo IOV 
(GALILEO-1) and FOC (GALILEO-2) satellites were replaced by rounded mean 
values of DLR and GFZ (all values in cm):

+-------+-------+------------+------------+-------+
| Sat.  | Comp. | igs08_1914 | igs08_1915 | Delta |
+-------+-------+------------+------------+-------+
| IOV   |   X   |     -20    |     -17    |   +3  |
|       |   Y   |       0    |      +3    |   +3  |
|       |   Z   |     +60    |     +95    |  +35  |
+-------+-------+------------+------------+-------+
| FOC   |   X   |     +15    |     +12    |   -3  |
|       |   Y   |       0    |      -1    |   -1  |
|       |   Z   |    +100    |    +110    |  +10  |
+-------+-------+------------+------------+-------+
| E201/ |   X   |     +15    |     +16    |   +1  |
| E202  |   Y   |       0    |      -1    |   -1  |
|       |   Z   |    +100    |    +105    |   +5  |
+-------+-------+------------+------------+-------+

E1, E5a, E5b, E5, and E6 were set to the results for the ionosphere-free 
linear combination of E1 and E5a. Details on the estimation of the new 
values can be found in

Steigenberger P, Fritsche M, Dach R, Schmid R, Montenbruck O, Uhlemann 
M, Prange L (2016) Estimation of satellite antenna phase center offsets 
for Galileo. J Geod 90(8): 773-785. doi:10.1007/s00190-016-0909-6
http://doi.org/10.1007/s00190-016-0909-6

2) The start date of the reactivated Block IIA satellite G032/G04 was 
corrected:

14 September 2016  -->  15 September 2016


The updated antenna correction model is available at
ftp://ftp.igs.org/pub/station/general/igs08_1915.atx
or
ftp://ftp.igs.org/pub/station/general/igs08.atx

With best regards,
Ralf Schmid
on behalf of the IGS Antenna Working Group


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