Edit Sessions

Visually analyze the quality of the raw satellite data in your sessions, and use the Session Editor to:

Cross-out small regions of GPS observations, such as areas containing large numbers of cycle slips. You can also finely adjust cross-out times.
Disable problematic data when performing trial-and-error tests to improve baseline solution quality. If you find no improvement in baseline processing results after disabling a satellite, re-enable it.
Note: Satellites, GPS observations, and selected regions of GPS observations can be disabled and enabled, but some elements are protected and cannot be disabled directly. Items, such as ephemeris and station icons can only be disabled when their parent items are disabled.
Note: Disabling a satellite also disables all GPS observations associated with the satellite. It is possible to disable individual GPS observations and selected regions of a GPS observation.

To edit sessions:

Do one of the following:
- Select a session or baseline in the Plan View or Project Explorer, right-click, and select Session Editor from the context menu.
- Select Time-Based View in Survey > GNSS. In the time-based view, select a session in the Sessions list. Right-click and select Session Editor from the context menu.
The Session Editor displays.

To cross-out sections of data:

Scan the occupations for gaps, and identify any sections of satellite data that you want to cross-out.
Window around each bad section of an occupation to cross out the data.
To adjust your cross-out, click it. Use the [Shift] or [Ctrl] keys, to multi-select cross-outs. The Selected Time Slot boxes display the begin and end cross-out times.
Edit the times in the Start time and End time boxes as needed. Click the Apply Time Edits button to apply the start and end times all at once.
To clear or reset crossed-out sections, right-click a satellite in the Satellites list and select Remove All Time Slots from the context menu. Use the [Shift] or [Ctrl] keys, to multi-select cross-outs.

To disable a satellite:

Caution: Before disabling a satellite, ensure that the geometry of the satellite constellation will not be adversely affected by removing that satellite.

Scan the occupations for gaps. Gaps in the L1 and L2 carriers could indicate satellite signal cycle slips, invalid range errors, and other signal loss problems.
Identify any satellites that you want to entirely disable.
Select a satellite in the Satellites list, right-click and select Disable Satellite in the context menu. You can also click on the satellite name on the right side. The line of data turns gray when disabled.
Reprocess the baseline and compare the processing results with the results from an earlier processing session.
After comparing the results of the two processing sessions, do one of the following:
- If the baseline has improved, save the baseline solution to your project.
- If there is no improvement in baseline quality, re-enable the satellite, and reprocess the baselines.
Click OK.