[IGSMAIL-5558]: Munich/Dresden GPS Reprocessing Product Release

[Peter Steigenberger]

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IGS Electronic Mail      22 Feb 05:11:24 PST 2007      Message Number 5558
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Author: Peter Steigenberger

Dear colleagues,

as some of you may know, Technische Universitaet Muenchen (TUM) and 
Technische Universitaet Dresden (TUD) have completely and homogeneoulsy 
reprocessed a global GPS network of about 200 stations. More details and 
first results of this project are described in Steigenberger et al 
(2006), Reprocessing of a global GPS network, JGR, 111, B05402, 
http://dx.doi.org/10.1029/2005JB003747

At the moment, the time interval from 1/1994 till 365/2005 is covered by 
a more recent reprocessing run including:

- absolute antenna phase center model for receiver and satellite antennas

- application of the isobaric mapping function (IMF) based on numerical 
weather model data:  Vey et al (2006), Influence of mapping function 
parameters on global GPS network analyses: Comparisons between NMF and 
IMF, GRL, 33, L01814, http://dx.doi.org/10.1029/2005GL024361

- consideration of second- and third-order ionospheric effects according 
to Fritsche et al (2005), Impact of higher-order ionospheric terms on 
GPS estimates, GRL, 32, L23311, http://dx.doi.org/10.1029/2005GL024342.

The GPS satellite orbits and the Earth rotation parameters of this 
reprocessing are now publicly available. These products are available in 
two different format categories:

- SP3c orbit files & ERPs in IERS pole format
- Bernese standard orbit (STD) files (binary Linux 32-bit) & ERPs in 
Bernese ERP format

All products as well as a detailed product description including an 
analysis strategy summary are available at the ISDC of GFZ Potsdam

http://isdc.gfz-potsdam.de/gps-pdr

and from a ftp-server in Dresden

ftp://kpgpc7.geo.tu-dresden.de.


For both services, a personalized login is required. For GFZ ISDC please 
register at

http://isdc.gfz-potsdam.de/user.php?op=register&module=NewUser

and choose the GPS-PDR project at 
http://isdc.gfz-potsdam.de/index.php?name=MyAccount&action=personal.

For the ftp-server in Dresden, please consult the webpage at

http://www.tu-dresden.de/ipg/reprocessing.html

and request a password by email to reprorequest at ipg.geo.tu-dresden.de

If you decide to use the reprocessing products described here, please 
refer to the publication by Steigenberger et al. (2006) given above in 
any publication or presentation. The extension of the time interval 
covered by the reprocessing as well as the release of further products 
is planned for the near future. If there are any questions, comments, 
results etc., please let us know.


With best regards,
                     

        Markus Rothacher (rothacher at gfz-potsdam.de)
        Peter Steigenberger (steigenberger at gfz-potsdam.de)

        Reinhard Dietrich (dietrich at ipg.geo.tu-dresden.de)
        Mathias Fritsche (fritsche@@ipg.geo.tu-dresden.de)
        Axel Ruelke (ruelke at ipg.geo.tu-dresden.de)