Breadcrumbs

GNSS measurements

  • The GNSS measurements are listed in the Measurements table under GNSS. They are grouped by base name.

GNSS measurements table

  • The table contains information on GNSS measurements, grouped by base name.

    image-20241230-163146.png

  • The information available are the following:

    • Type: indicates whether the point is a base or a point measured in rover mode.

    • Use: to set the mode in which the program uses the measurement in the calculation of the survey. The option H + V allows the program to use both the horizontal and vertical component of the measurement. The option Only H or Only V They set the use of the measure only as a horizontal measure or only as a vertical one.

    • Base name: the name of the GNSS base.

    • Base height: the height of the base.

    • Name: the name of the point.

    • Code: the survey code associated with the measured point.

    • Longitude: the point longitude.

    • Latitude: the point latitude.

    • Height: the ellipsoidal height.

    • Rover height: the height of the rover antenna.

    • Description: the point description.

    • Date/time: the date and time when the point was measured.

    • Recording: this box shows if there are voice notes related to the measurement.

    • Image/sketch: this box shows if there is an image associated with the measure.

    • Delta X/Y/Z: the delta of the baseline vector.

    • Epoch: how many epochs was used to measure the point.

    • GDOP/HDOP/PDOP/VDOP: the DOP (diluition of precision) values for the measure.

    • GPS/Glonass/Beidou/Galileo: the number of satellites used for the measure.

    • Solution: the solution type of the measure (RTK fixed, RTK float, autonomous).

    • Tilt: if an IMU receiver is used, this field shows the tilt of the pole when measurement was done.

    • HRMS: horizontal precision.

    • VRMS: vertical precision.

    • XX/XY/XZ/YY/YZ/ZZ: values of the variance/covariance matrix.

  • Can change the display layout of the table from the bottom right button, which allows you to view other data related to GPS measurements.

    image-20241231-090604.png

  • The following options are available:

    • Baseline: to enable the display of baseline data (Delta X, Delta Y, Delta Z).

    • Covariance: to enable the display of data in the variance/covariance matrix, this data cannot be modified.

    • Geodetic coordinates: to enable the display of data of longitude, latitude and ellipsoidal height.

    • DOP: to enable the display of data on the accuracy of the GNSS measure (HDOP, VDOP, GDOP, PDOP).

    • Quality: to enable the display of measurement quality data (solution, HRMS, VRMS, Epochs, Tilt).

    • Save Layouts as default: to save table layout as default. It means that the settings applied to the layout (position of columns, display of columns etc...) will be applied as default to open tables later.

    • Restore default Layouts: to allow to undo the changes applied to the table layouts and restore the standard display.

  • If there are multiple bases, you can view the measurements of each base by expanding the tree node.

  • The bottom toolbar of the table presents the following commands in addition to the basic commands:

    image-20241231-091827.png

    • Colors by base: to set a color to the baselines according to the base name.

    • Colors by code: to set a color to the baslines according to the survey code.

Edit GNSS measurements

  • Double-click on a measure or click on Edit to access a specific window that allows the measurement data changing also displaying the measurement quality data (Epochs, Solutions, DOP, covariance factors, etc.).

  • The GNSS measure page shows information on the GNSS measured coordinate and baseline

    image-20241231-091150.png

    • Base name: the name of the GNSS base.

    • Base height: the height of the base.

    • Longitude: the base longitude.

    • Latitude: the base latitude.

    • Height: the base ellipsoidal height.

    • Point name: the name of the point.

    • Pole height: the height of the rover antenna.

    • Tilt: if measure has been done with an IMU receiver, this field shows the tilt of the pole.

    • Longitude: the point longitude.

    • Latitude: the points latitude.

    • Height: the points ellipsoidal height.

    • Baseline DX/DY/DZ: the delta of the baseline vector.

    • Code: the survey code associated with the measured point.

    • Description: the point description.

    • Date/time: the date and time when the point was measured.

  • The Quality page shows information on the quality of selected GNSS measure.

    image-20241231-091446.png

    • Solution: the solution type of the measure (RTK fixed, RTK float, autonomous).

    • HRMS: horizontal precision.

    • VRMS: vertical precision.

    • Epoch: how many epochs was used to measure the point.

    • GDOP/HDOP/PDOP/VDOP: the DOP (diluition of precision) values for the measure.

    • GPS/Glonass/Beidou/Galileo/SBAS: the number of satellites used for the measure.

    • XX/XY/XZ/YY/YZ/ZZ: values of the variance/covariance matrix.

  • The Photo and messages page shows the photo and vocal message assigned to the point.

    image-20241231-091638.png