Collective Unambiguous Positioning With High-Order BOC Signals

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The unambiguous estimation of high-order binary offset carrier signals in harsh propagation conditions is still an open problem in the literature. This paper proposes to overcome the limitations observed in state-of-the-art unambiguous estimation techniques based on the application of existing direct positioning techniques and the exploitation of the spatial diversity introduced by arrays of antennas. In particular, the ambiguity problem is solved as a multiple-input multiple-output estimation problem in the position domain.