METHOD, SYSTEM, DEVICE AND COMPUTER PROGRAM PRODUCT FOR SIGNALLING A MALFUNCTION OR IMPENDING MALFUNCTION OF A POSITION DETECTING APPARATUS, AND FEE CHARGING SYSTEM

摘要

The invention relates to a method for signaling a malfunction or imminent malfunction of a position determining device (PV) and an associated signaling system, charging system, position determining device (PV) and computer program product (CP). The method comprises the following method steps: receiving at least two first signals of two satellites of a first GNSS satellite system and deriving a first position value from the first signals; Receiving at least two second signals of two satellites of a second GNSS satellite system and deriving a second position value from the second signals; Evaluating the first position value and / or the second position value; and deciding that signaling is triggered, depending on the result of the evaluation.