摘要:
An apparatus for allocating a current measurement value for a geographical position to a map object of a geographical map, wherein the current measurement value originates from a series of adjacent measurement values for adjacent geographical positions, having a processor for determining a first probability measure indicating whether the current measurement value can be allocated to a first map object to which at least one adjacent measurement value of the series has already been allocated previously, and for determining a second probability measure indicating whether the current measurement value can be allocated to a second map object having an intersection with the first map object, if the first probability measure indicates that an allocation of the current measurement value to the first map object is unlikely.
摘要:
At a current position, a measurement packet is determined by a mobile terminal device at a measurement time. The measurement packet includes transmitter identifications of radio transmitters receivable at the current position of the mobile terminal device at the measurement time. By means of reference measurement packets provided to the mobile terminal device, the mobile terminal device itself can determine its current position. Additionally, a deviation of the determined transmitter identifications of the measurement packet from reference transmitter identifications of the reference measurement packets is determined. If a deviation of the reference transmitter identifications from the transmitter identifications determined at the current position is detected, experience messages can be generated that can again result in an update measure as, for example, updating the reference database by adding new transmitter identifications to the reference database and/or removing obsolete reference transmitter identifications from the reference database.
摘要:
An apparatus for determining a correspondence of a position with a reference position, wherein radio signals of stationary radio transmitters are receivable at the position, having a determiner for determining an identification of a certain radio transmitter and for determining a signal characteristic of a radio signal of the certain radio transmitter at a first time t1, wherein the identification and the signal characteristic of the radio signal of the certain radio transmitter represent at least part of a measurement packet for the position, a processor for post-processing the measurement packet to obtain a post-processed measurement packet for the position wherein the processor for post-processing is implemented to synthesize the signal characteristic of the certain radio transmitter.