An example and analysis for ambiguity resolution in the indoor ZigBee positioning system

Joanna Janicka, Jacek Rapinski


This paper presents ambiguity resolution in the range-based ZigBee positioning system. The system is using the phase shift measurements to determine the distances between user and anchors. In this paper, the ambiguity is defined as the number of full reps of a certain distance added to the measurement result. The way of resolving ambiguities in the positioning system is described and an experiment results are presented. Featured algorithm is successful in finding ambiguities and correct location of the user.


ZigBee; ranging; indoor navigation; ambiguity resolution

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