[IGSMAIL-6564] igs08_1682.atx: Update including reactivated Block IIA satellite SVN32/PRN24

[Robert Khachikyan]

Dear IGS colleagues!

The absolute IGS antenna correction file (igs08_wwww.atx) has been
updated. The new release is called 'igs08_1682.atx'. It contains the
following changes:

1) According to 'NANU 2012018' the following satellite has been added:

G24 (G032)

NOTICE ADVISORY TO NAVSTAR USERS (NANU) 2012018 NANU TYPE: GENERAL
*** GENERAL MESSAGE TO ALL GPS USERS *** ON APPROXIMATELY 14 MAR 2012
SVN32 WILL RESUME TRANSMITTING L-BAND UTILIZING PRN24.  AT L-BAND
ACTIVATION, SVN32/PRN24 WILL BE UNUSABLE UNTIL FURTHER NOTICE.
ADDITIONALLY, NO BROADCAST ALMANACS WILL INCLUDE SVN32/PRN24.  FUTURE
NANUS WILL INFORM USERS OF ANY CHANGES TO THE ABOVE-STATED STATUS.
http://cgls.uscg.mil/pipermail/nanu/2012-March/001400.html

2) A decommission date for the following satellite has been added:

G24 (G049): 14 March 2012

3) A robot calibration provided by Geo++ GmbH for the following antenna
type has been added:

NOV533+CR       NOVC

This antenna type is installed at the SIRGAS station MARA in Venezuela
that might be added to the IGS network in the near future:
http://www.sirgas.org/fileadmin/docs/logs/mara_20111025.log


The updated antenna correction model is available at
ftp://igs.org/pub/station/general/igs08_1682.atx
or
ftp://igs.org/pub/station/general/igs08.atx

Many thanks to Richard Langley and Stefan Schaer for their help and
sorry for the delay!

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