Check In Raw GNSS Data

Before using imported GNSS data in your project, you can verify the raw data and correct field errors if necessary in the Receiver Raw Data Check In dialog, which displays during import. For example, you can remove bad observations due to a field crew not setting up over the correct point.

Note: For multiple files to be concatenated into the single occupation they represent, the point ID, antenna data, and other information must be the same for each file, so be careful about what you edit during the raw data check-in.

To check in raw GNSS data:

Note: For a complete description of all of the options available in the Receiver Raw Data Check In dialog, see Raw Data Check-In Options.

On the Points tab in the Receiver Raw Data Check In dialog, uncheck any points in the Import column that you do not want to import.
When a roving segment is selected, the Point ID column changes to Continuous Segment. If you need to change a roving segment to continuous after import, use the Force Continuous command.
Optionally, click in any Point ID field and edit the point ID.
Columns can be sorted in ascending or descending order by clicking on the column heading. You may also rearrange columns by dragging and dropping the column header to the desired location.
If you want to compute the imported data using RTX-PP, an Internet service provided by Trimble Positioning Services, check the Send to RTX-PP check box.
This option is available only if you are importing long static files (1 hour or more) that were recorded using RTX-PP supported antennas and receivers after 14 May 2011 and the files are in a Trimble or Spectra Geospatial proprietary format (T01, T02, DAT, ATOM, or Quark) or a standard RINEX 2, RINEX 3, or RINEX 4 format. For more information, see Compute Positions with Trimble RTX Post-Processing Service.
On the Antenna tab, verify that the antenna data is correct to ensure the highest accuracy for your baselines. Make edits as necessary.
The baseline processor uses different antenna offset and slant corrections based on the antenna type. This information is stored in a library that contains corrections for all antenna types.
Note the following:
- To quickly edit the antenna height for multiple segments, see Editing multiple antenna heights.
- If you select Unknown for the manufacturer, be sure to select the antenna phase center method for the antenna height.
- If an entry on the Antenna tab is displayed in red, it indicates the antenna does not support the selected antenna model; no antenna calibration is available. Try selecting a different antenna model.
On the Receiver tab, verify that the receiver data is correct to ensure the highest precision for your baselines. Make edits as necessary.
The baseline processor uses a different noise model based on the receiver type. This information is stored in library containing information on all receiver types.
If the survey mode is static and you want to specify that the file be processed as a Virtual Reference Station (VRS), select VRS. Otherwise, select Single Base Station. For additional information about using VRS data, click here.
The use of Virtual Reference Stations (VRS) enables RTK corrections over a large geographic area where robust cellular data coverage is available. When specifying that a base station static file be processed as a VRS, note the following:
- You can specify that a static file be processed as a VRS file in the Receiver Raw Data Check In dialog and in the file's Properties pane.
- You can specify the length of a VRS baseline that, when exceeded, causes a warning flag to be displayed after baseline processing by selecting Baseline Processing > Processing in the Project Settings dialog.
- The Baseline Processor uses VRS-mode processing for any baseline that has one file tagged as VRS. The VRS tagged file is processed as a reference station; the other file is processed as a rover.
- VRS-mode base processing is not supported for any baseline that is from a VRS and to a VRS. In this case the baseline is not created.
- VRS-mode base processing applies to T02, RINEX, and Trimble.dat data only. If your import data is in a different format, the VRS option is not selectable.
- When processing a baseline in VRS mode, the baseline orientation may be inverted compared to what TBC would have selected by default. For example: File1 is 8 hours static data, File2 is 2 hours static data, and File2 is VRS.
If you want to reset (undo) any edits you may have made in the Receiver Raw Data Check In dialog, click Reset or Cancel.
If you click Reset, all edits are undone and the default import selections are restored. If you click Cancel, the dialog closes and the import process is canceled.
Note: After this data is checked in, your selections can no longer be changed.
To import the data into your project, click OK.
If the grid reference values used to orient your project on the display grid have not been set (they should be set up in your project template), the Projection Definition dialog displays. To set these values, see Change the Coordinate System.