Figure 8
From: Solution of underdetermined systems of equations with gridded a priori constraints
A 2D geodetic network and the corresponding observations of distances of Case study 3. (a) Coordinates x 1 , y 1 , y 3 are assumed fixed. Red arrows indicate possible movements of points 2, 3, 4 (degrees of freedom of the system), shaded areas 2-D areas of uncertainty of points. (b) The subsets of grid points defining the intersection S and which are used to compute the corresponding centers of weight, representing the best estimates values of the unknown coordinates (red triangles), summarized in Table 8.