STEP by STEPS
FLASH MOVIES
The following movie shows how to post-process SmartStation data. With a GPS reference station running and collecting raw data, the instrument was setup on one point with an assumed set azimuth to the second point. Raw GPS data was recorded while the topo survey was being done reflectorlessly. The instrument was moved ahead to the backsight and oriented with a known backsight to the first point. Raw data was logged as the survey was completed reflectorlessly. The data was brought back to office and the movie begins. There was no known control for the SmartStation other than the GPS reference station.
Right-click on the links below and select "Save Target (or Link) As" to download zipped data files to accompany the movie:
- Project (with all data in unprocessed stage).
- Raw data (includes zipped base data)
The following movie shows how to update the TPS setups in a combined GPS-TPS project where the original GPS reference station has been updated, say from OPUS.
1) How to Change the Antenna Type of an Observation.
Below we see a series of rapid static points that show an AX1202 Tripod as the antenna.
Reasonable, but in this case the observations were done with an AX1202 Pole. The operator forgot to change the antenna type in the configuration before beginning the survey. Here's how to correct the situation:
In the Data Proc page, in the left window of the screen, right-click on the the site name for the interval which has the incorrect antenna type, and select Properties from the pop-up menu.
You will see the current antenna and antenna height shown in the Interval Properties (Track) dialog box.
Change the antenna type to the correct one, and correct the antenna height if needed.
Repeat for all stations with the incorrect antenna type.
If the antenna you want does not appear in the list, open the Antenna Management window and go to the antennas page of your open project.
Cascade or tile the windows so you see both the Antenna Management list, and your project antenna list.
Right-click on the antenna you want to copy from the antenna management list, and drag it to the project antenna list.
The antenna will now be available to select in the Interval Properties (Track) dialog box as shown above.
Using NGS antenna phase centers
By default, Leica uses the Leica (IGS) phase center offsets when importing Leica raw data, and when importing RINEX data for Leica antennas. If you are processing your data with CORS data, you generally want to use the NGS definitions. This can be done by changing the preferred phase center offsets when importing RINEX data as seen in image below.
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To change the preferred definitions, double-click on the current definition, and then double-click on the desired definition.
The data in the two projects shown below were imported from the same RINEX files. The difference was in the Preferred antenna defintions selection.
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To use the NGS phase center offsets for your Leica raw data, import the data into a project and then export the data as a RINEX file. Either delete the current observations, or create a new project, and then import the RINEX data using the user defined antenna definitions. Import any additional RINEX files using the same definitions, and then process.
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