Methods and devices for determining a distance value representing a transit time and/or a spacing between at least two transceivers, in particular by a motor vehicle and by a vehicle key

Abstract

Disclosed are a method and a device for determining, repeated in time intervals, of at least one of a distance value representing a time of flight and a distance between at least two transceivers by exchanging messages between the at least two transceivers, wherein on the part of at least one transceiver: at least one antenna is provided in each case for transferring messages by in each case at least one of transmitting and receiving the messages, wherein furthermore at least one evaluation unit is provided to determine a first distance value using messages transferred by at least one antenna and to determine at least one second distance value using of messages transferred by at least one antenna, wherein furthermore a selection unit is provided, which is configured to select in each case, from the last determined distance values, the smallest distance value.