Breadcrumbs

GNSS localization

X-PAD Ultimate Survey 1.png | X-PAD Ultimate Build 1.png | X-PAD Ultimate GO 2.png

  • Define the method to use for transformation of the GPS coordinates in plane coordinates and vice versa.

  • Without an assigned GPS localisation, only the geographic coordinates of the points are recorded. A visualization of the points in the graphic window is impossible.


  • Click Job.

  • Click Coordinate system.

  • Click GNSS localization to open the page with the method to transform the GPS coordinates.

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  • The available methods are:

    • No system: no coordinate system is applied.

    • Local - Single point: a system is created based on a local projection referred to one origin point.

    • Local - Site calibration: a system is created based on several points with known geographic and local plane coordinates.

    • Cartographic system: for the transformation from geographic to plane coordinates a cartographic system is used. The system can be manually entered or selected from a list of predefined systems.

    • Reference axis: a system is created based on the measurement of a point of origin and the measurement of a second point which defines the direction of the axis.

    • 2 Reference axis: the position and orientation of the station are determined by measuring four reference points. The points define two axes which, intersecting each other, determine the position of the station.

    • Vertical elevation: after a system has been defined, the software allows to choose what system use to calculate the elevation.


  • When the GNSS localization is selected or changed, the software asks if the points already available in the job, with a valid latitude and longitude, have to be recalculated in the new system.

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    • All points: recalculates the coordinates for all points in the job with a valid latitude and longitude in the job.

    • No points: coordinate of points are not recalculated in the new system.

    • GNSS points: recalculates the coordinate only for points measured with a GNSS receiver.

    • TPS points: recalculates the coordinate only for points measured with a total station.

    • Imported points: recalculates the coordinate only for points imported in the job.

    • Other points: recalculates the coordinate for points calculated, for example in COGO, or manually entered.