Accurate RSS-Based Positioning Using a Terrain-Independent Dynamic Propagation Model

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Conference Proceeding
2017 IEEE Global Communications Conference (GLOBECOM) Proceedings, 2017
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Widespread application of RSS-based positioning systems has rendered the accuracy as the most critical feature of these systems. Lack of a general propagation model that can be deployed for different terrain types as well as taking into account environmental variations and non- homogeneities in the propagation environment, can lead to significant inaccuracies in RSS-based positioning systems. In this paper a novel dynamic mathematical model for the radio wave propagation is proposed which is flexible enough to be fitted on any terrain by automatically making variations in the propagation factor, coping it with the environmental variations of the terrain. These variations in the propagation factor are done independent of the terrain type. Using the proposed model, we have also developed an algorithm that identifies non-homogeneous areas in the propagation environment and calculates the loss of these areas as well as obtaining constant- RSS curves for the non-homogeneous areas having shapes other than the expected circular shapes which are only the case for an ideal and totally homogeneous propagation environment. Simulation results have shown significant improvement in positioning accuracy.
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