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Fig. 6 | SpringerPlus

Fig. 6

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

Fig. 6

Varying ranges and the two-spheres approximation. Aerial view of the region covered by a hypothetical tag (grayed region) located at the figure’s center (black dot). This region’s section is denoted by s and has an average radius \(R_{0}\). The inner and the outer circles of the two-spheres approximation are denoted by i and o respectively. Their radii \(R_{min}\) and \(R_{max}\) correspond to the minimum and maximum distance from the tag’s range surface to the tag itself.

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