Options of adjusting and connecting the net

The program allows a few options for connecting the adjusted network into the reference system.

Helmert transformation

If all the points of the adjusted network have the feature Free, the adjustment will be performed under the condition for adjustments of the approximate configuration.

[(dx2 + dy2)] = min

for all the points of the net. The adjusted network is placed at all the points of the network by the Helmert transformation.

Selective Helmert transformation

In this option, at least two points have to have the feature Helmert and others Free. The network adjustment will be performed under the same condition as for the previous option. Only the points with the feature Helmert are used for placing the adjusted network into the reference system.

Permanently marked point and permanently marked bearing

In this option, during the adjustment, the coordinates of the permanently marked point and the bearing from the permanently marked point to the point with the permanently marked bearing are maintained. Exactly one point in the network has to have the feature Permanently marked point, one Permanently marked bearing, and the other points on the network must have the feature Free.

Bounded net

The bounded network contains two or more points with the feature Permanently marked. The coordinates of these points will not be changed by this adjustment. The measurements between the permanently marked points do not affect the adjustment results; they only affect the result accuracy features. Other points have the feature Free.