An expression of uncertainty and its application to positioning: a quality-metric and optimal ranges for the identification of cells with RFID.

Here we devise an approach to model error and its propagation. Without approximations, we define the uncertainty of a measurement as its maximum possible error (maper). Thus, we propose and solve analytically two optimization problems.

On the Helmert-blocking technique: its acceleration by block Choleski decomposition and formulae to insert observations into an adjusted network.

The Helmert-blocking technique is a common approach to adjust large geodetic networks like Europeans and Brazilians. The technique is based upon a division of the network into partial networks called blocks. This way, the global network adjustment can be done by manipulating these blocks.