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Fig. 5 | SpringerPlus

Fig. 5

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

Fig. 5

Derivation of the maper formulae for mean cell-id technique. Angles are represented by greek letters, vectors by bold latin letters and lengths by both latin and greek letters. The angles are oriented towards an axis parallel to the vector \(\mathbf {X_{n-1}X_{n}}\) in a counterclockwise direction. The maper occurs at the boundary of the region delimited by the tag’s signal, here a circle centered at \(\mathbf {P_n}\) and with radius r—note that now this region may correspond to the intersection of the regions delimited by the last two tags detected, in case at least two tags may be simultaneously detected.

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