Determination of positions

A non-transitory computer readable storage medium storing a computer program for position determination, the computer program, when executed by a processor, causing the processor to perform a method, the method comprising:

• obtaining, via a receiver, electronic radio signals from stationary transmitters;
• obtaining, via an input interface, sensor data from at least one sensor;
• determining a first sequence of positions by processing the electronic radio signals from the stationary transmitters, and a second sequence of positions by dead reckoning processing of the sensor data;
• comparing the determined first sequence of positions to the determined second sequence of positions;
• based on the comparison, ascertaining position information, wherein the position information is a resulting sequence of positions that represents a deviation of the first and second sequences of positions from each other;
• and
• optimizing the first sequence of positions by:
• differentiating the determined first sequence of positions;
• and
• weighting the differentiated determined positions based on the resulting sequence of positions to correct the deviation.

A position determining device in a mobile terminal, comprising:

• a receiver for radio signals of stationary transmitters;
• a position determining element to determine a sequence of first positions of the receiver from radio signals of stationary transmitters;
• sensors at least to ascertain a direction and a distance for determination of a sequence of second positions by dead reckoning;
• a memory to store the sequences of first positions and second positions;
• and
• a processing unit to:
• compare the determined sequence of first positions to the determined sequence of second positions;
• ascertain position information from the comparison, wherein the position information is a resulting sequence of positions that represents a deviation of the sequence of first positions and the sequence of second positions from each other;
• and
• optimize the sequence of first positions by:
• differentiating the determined sequence of first positions;
• and
• weighting the differentiated determined positions based on the resulting sequence of positions to correct the deviation.