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Resection in Hybrid Positioning™ Mode
The Hybrid Positioning™ mode allows you to simultaneously record the point coordinates from GNSS rover receiver and Total Station to the opened job. This option can be activated only for Robotic Total Station with reflector. The GNSS receiver and Robotic Total Station are connected to the job simultaneously. Using Hybrid Positioning™ mode you can obtain an occupation point coordinates in Grid or WGS-84 coordinate systems.
Before performing resection you need to activate Hybrid Positioning™, select a desired prism with enabled and specified Hybrid Positioning™ antenna offset and open the Resection dialog.
Note: Review the detailed information on how to set the antenna height in a single equipment setup ready for both, Hybrid Positioning™ and standard GNSS surveys.
There are several scenarios to perform the resection procedure:
Scenario A:
The desired Grid projection is defined in the job. Grid to Ground transformation is not selected. The GNSS and TS measurements are performed for each unknown point. The coordinates of the Occupation Point are calculated in the current Grid coordinate system.
- Select the desired Grid projection in the Coordinate System dialog.
- In the Define instrument setup group (Resection dialog) you can:
- In the Occupy field, enter a name of the occupation point. If you determine the coordinates of an unknown occupation point, type in a new point name. If you want to recalculate the coordinates of the known occupation point choose the point either from the map
or from the list
.
- In the HI field, enter the height of the instrument.
- Select from the list (Code) a desire code for the occupation point.
- Click the Next button to continue.
- In the Specify control point group you can:
- Enter the name (Point); you can select the point either from the map
or from the list
.
Note: If you have entered a new point name, the software will prompt you to manually enter this point coordinates in the Add Point dialog.
- Enter the height of the target. Type the value manually or click the button with current target icon to select one of the previously used values from the context menu. Select Edit from the context menu to open the Targets dialog to add or modify target configurations.
- The Measure FS displays the values of horizontal angle (HA), vertical angle (VA) and slope distance (SD).
- Take the TS measurements. More...
- In the Measure GNSS Point For you see the point coordinates in the current Grid are measured by the GNSS receiver. In this group you can:
- Change the point name or select the point either from the map
or from the list
.
- Click
to perform the measurement with the precise settings and store the point either automatically, or manually or click
to perform the measurement with the quick settings and to automatically store the point.
- After measuring second control point (and subsequent points), the Results screen displays measured values of angles and slope distances with estimate of accuracy. In this screen you can:
- Click Add to measure another control point.
- Click Remove to delete any selected measurement.
- Click Re-Meas to repeat the measurement to the previous point.
- Click Accept to calculate (or recalculate, when you add a measurement to next control points) the occupation point coordinates in the current Grid coordinate system and finish the resection procedure. Clicking on the button opens the Point Check dialog, where the occupation point coordinates are saved.
Scenario B:
The desired Grid projection is defined in the job. Grid to Ground transformation is selected. The relationship between Grid and Ground coordinate systems is known. Coordinates for both coordinate sets are displayed in the current coordinate system. The coordinates of the Occupation Point are calculated in the Grid or Ground coordinate systems.
The routine of the resection procedure is similar to the Scenario A.
- Select the desired Grid projection in the Coordinate System dialog.
- Check the Use Grid / Ground box, click
and select the desired parameter (Parameters) in the Grid / Ground Parameters dialog. Click
to save the selected grid to ground parameters.
- Perform the steps 2-5 of the Scenario A.
Scenario C:
The Grid projection is not defined in the job. The user has coordinates of the control points (two points at least) in the Ground coordinate system. For each control point TS and GNSS measurements are provided. The software performs the localization between WGS-84 and Ground. The coordinates of the Occupation Point are calculated in the Ground and WGS-84 coordinate systems.
- Select <none> in the Projection of the Coordinate System dialog.
- In the Define instrument setup group (Resection dialog) you can:
- Set a name of the occupation point (Occupy). If you determine the coordinates of an unknown occupation point, type in the point name. If you want to recalculate the coordinate of the known occupation point choose the point either from the map
or from the list
.
- In the HI field, enter the height of the instrument.
- Select from the list (Code) a desire code for the occupation point.
- Click the Next button to continue.
- In the Specify control point group you can:
- Either enter the name of the new point (Point) or select the known point from the map
or from the list
.
Note: If you have entered a new point name, the software will prompt you to manually enter this point coordinates in the Add Point dialog.
- Enter the height of the target. Type the value manually or click the button with current target icon to select one of the previously used values from the context menu. Select Edit from the context menu to open the Targets dialog to add or modify target configurations.
- The Measure FS displays the values of horizontal angle (HA), vertical angle (VA) and slope distance (SD).
- Take the TS measurements. More...
- In the Measure GNSS Point For you see the point coordinates in WGS-84 are measured by the GNSS receiver for localization. In this group you can:
- Change the point name or select the point either from the map
or from the list
.
- Click
to perform the measurement with the precise settings and store the point either automatically, or manually or click
to perform the measurement with the quick settings and to automatically store the point.
-
After measuring second control point (and subsequent points), the Results screen displays measured values of angles and slope distances with estimate of accuracy. In this screen you can:
- Click Add to measure another control point.
- Click Remove to delete any selected measurement.
- Click Re-Meas to repeat the measurement to the previous point.
- Click Accept to calculate (or recalculate, when you add a measurement to next control points) the occupation point coordinates in the current Ground coordinate system and finish the resection procedure. Clicking on the button opens the Point Check dialog, where the occupation point coordinates are saved. Click
to perform the localization between Ground and WGS-84 coordinate system. If the factual residuals for the known point are less than internal threshold values, the localization will be created. After that:
- In the Projection field of the Coordinate System dialog, Localization is set automatically.
- Next measured pair of points in the resection procedure is not automatically added to localization. The localization parameters are not updated.
- Next measured pair of points in the resection procedure is used in recalculation of the occupation point coordinates.
Note: When the Localization is selected as the current projection of the job, you can use unknown point(s) for resection task in the Hybrid Positioning™ mode.
You can review the point pairs that are used for localization in the Localization details dialog and you can manually add or delete any pair there.
Scenario D:
The coordinates of the control points (two points at least) in the Ground coordinate system imported in the job. The desired Grid projection is defined in the job. For each control point TS and GNSS measurements are provided. The software automatically performs the localization between Grid and Ground. The coordinates of the Occupation Point are calculated in the Grid and Ground coordinate systems.
- Import the set of points with coordinates in Ground coordinate system to the job. Then select the desired Grid projection.
- Perform the steps 2-5 in the Scenario C.
Next measured pair of points in the resection procedure is used in recalculation of the occupation point coordinates.
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