• Release date: 2017-06-12
• Release version: 3.0
• Access policy: Available for all registered VieVS users. Please note:
• Availability: via sftp on vievs@ftp.ipf.tuwien.ac.at ( SSH keys have to be installed in order to get access!)

The old server, where the VieVS 2.3 release is maintained, will be shut down on July 10, 2017. Please be prepared and set up SSH keys in time for accessing the new repository of VieVS 3.0.

The previous VieVS release (2.3) will still be available until 2017-07-10 on our old Server (directory /VieVS/). Afterwards it will be deleted and won't be available for the users any more.

Just download the content of the /_down/vievs/ directory from our server using the provided username and password. Copy all files to a local VieVS root directory of your choice. If you want to use the same installation directory as used for a previous VieVS 2.2 installation, please delete all files in the /COMPILE/ and /WORK/ directories first.

How to access our ftp server and how to download VieVS is described here: Download VieVS via SFTP

Basically all data files are compatible.

• OPT files for VieVS 2.3 still work for 3.0
• Outlier files are also compatible

The VieVS data structures located in <vievs_root>/DATA/LEVEL<x>/ created with VieVS 2.3 may not work any more with VieVS 3.0 due to changes in the structure content.

• vgosDB files are now supported
• A new file format for observation data, named “VSO”, is now supported. It can be used to import observation data very flexible, e.g. from non-standard observations, such as observations of satellite signals
• The VIE_SCHED module was improved with some major updates
  • manual scheduling mode
  • schedule analyser
  • better fillin modes
  • new optimization parameters
  • scheduling conditions
  • multi scheduling tool with multicore support
  • better integration of scheduling and simulations
• The most recent version of the satellite scheduling tool is included.
• New possibilities for modelling troposphere delays were added:
  • Direct application of ray-traced delays
  • Consideration of a priori zenith wet delays
  • New empirical troposphere model GPT3
  • New horizontal gradient models GRAD and GPT3
• Updated superstation and supersource files
• Analysis options for satellite observations:
  • Observation data can be loaded via VSO files
  • Near field delays can be calculated in VIE_MOD (iterative solution of the light-time equation)
  • Satellite observations are supported in all three code modules (VIE_INIT, VIE_MOD, VIE_LSM) and in VIE_SIM
• etc.

Lots of further changes were applied which are not listed here.