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Sinex output

The SINEX file format is a standardized output ASCII format used by the International Earth Rotation and Reference Systemsn Service (IERS). It is used for the distribution of products and estimates. VieVS is capable of writing SINEX files as output. This option is given in 'Run - Sinex output'. Only values which are estimated can be chosen. The option 'include' writes the chosen parameters to the SINEX files. Zenith wet delays are usually estimated every hour. Therefore the normal equation matrix (and also the SINEX file) would become very large. The option 'reduce from N matrix', removes the entries for the chosen parameters (e.g. zenith wet delays) from the normal equation matrix and makes the SINEX files considerably smaller. However, the parameters can be derived from the 'reduced' N matrix as well.

VieVS estimation settings

In the VieVS processing settings (Run - VieVS processing settings) the user can select the clock parametrization in the first solution (in which only one zenith wet delay per station and one linear clock function per station is estimated) and the outlier test in the main solution (in which all parameters are estimated). Furthermore the user can (de-)select to actually estimate parameters (otherwise only the normal equation matrix is set up) and start a station- and source wise parametrization for each session chosen in File - Set input files. There is a button to save a current parametrization to an ASCII file in this panel as well.

Run options

In Run - Run options the user can basically chose which modules should be run and to which subfolders the (intermediate) results should be saved to. The results are saved in the VieVS/DATA/LEVELx/ subfolder/ .

In the “Advanced options” section the user can specify if he wants to run the process_list in parallel.

Another option worth mentioning is the exception handling which can be specified in here. If you deselect the “stop process list if there is an error in a session” checkbox VieVS will not stop when an error is found in a session. The error will be printed on the screen and the next session in line will be started. When VieVS is finished all failed sessions are printed in the commandwindow. Furthermore, a process list with all the failed sessions is saved at WORK/PROCESSLIST/failed_sessions.mat. This list can then be used for investigating the errors. The exception handling also works in parallel mode. This option is particularly usefull when large process lists are used, because it can run unattended and failed sessions can be looked at alltogether after the process list is finished.

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public/vievs_manual/run.txt · Last modified: 2016/01/13 10:50 by dmayer2