Performance Analysis of Altimeter-Aided GNSS Receiver for Indoor Scenarios
Performance Analysis of Altimeter-Aided GNSS Receiver for Indoor Scenarios, Proc Conf. on Telecommunications - ConfTele, Santa maria da Feira, Portugal, Vol. 1, pp. 1 - 4, May, 2009.
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The paper addresses the problem of positioning inside buildings using a GNSS receiver. Since signals in indoor environments are very weak, a high-sensitivity receiver aided by a barometric altimeter is shown to be a suitable option. A specially tailored least-squares algorithm is proposed for the solution of the navigation equation. Simulation results prove that a well calibrated altimeter helps reduce significantly the positioning errors both in the vertical axis and the horizontal plane.