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Satellite Selection based on WDOP Concept and Convex Geometry

Delgado, N. ; Nunes, F.

Satellite Selection based on WDOP Concept and Convex Geometry, Proc ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2010.

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Positioning accuracy is typically evaluated assuming that measurement errors are identically Gaussian distributed zero-mean and uncorrelated. For these conditions, Geometrical Dilution of Precision (GDOP) alone is typically used as a satellite selection criterion. However, this is an idealization that leads to suboptimal results. Under this assumption, a satellite selection mode based on convex geometry theory was proposed by the authors elsewhere. A modification of the mentioned satellite selection algorithm is proposed here, where the impact of different measurement errors is considered for the selection computation.