Name

Control point alias.

Coordinate

Warning: for georeferenced control points, you must specify ellipsoidal height, and not the height above sea level, if your spatial reference system does not specifically include an orthometric vertical datum. For the WGS 84 reference system, for example, you must enter ellipsoidal heights; if your system is WGS 84 + NAVD 88 geoid height, then you must use heights above sea level.

For more information, please refer to Useful concepts (on page 13).

Edit the control point 3D position in the corresponding fields. Coordinate units depend on the chosen coordinate system:

• Local coordinate system: same unit for X, Y and Z (known unit or arbitrary unit).
• WGS 84: latitude and longitude in degrees, ellipsoidal height in meters.
• Other: X, Y and height in meters (according to the selected coordinate system).

Check point

Enable this option if you want to use the control point for checking only. In such case the control point will not be considered during the aerotriangulation.

Category

• Full: XYZ coordinates will be used (default).
• Horizontal: only X and Y coordinates will be used.
• Vertical: only Z coordinates will be used.

Horizontal accuracy

Enter the given accuracy for the X and Y coordinates of the control point.

Control points with a higher accuracy will have more weight in the aerotriangulation.

Vertical accuracy

Enter the given accuracy for the Z coordinates of the control point.

Control points with a higher accuracy will have more weight in the aerotriangulation.