METHOD OF TRACKING RADIO FREQUENCY SIGNALS

摘要

The invention regards a method of keeping track of and staying tuned to a transmitter even when a receiver is moving at a relatively high speed. Electronic equipment (10) carried on fast moving vehicles and comprising receiving means (20) can experience a shift in the frequencies received due to Doppler shift. The invention provides a way of taking such a Doppler shift into account by means of acceleration measurements of the electronic equipment (10). The invention is particularly advantageous in electronic equipment (10) containing a GPS receiver (20) or the like, where re-tracking of satellites can be power and time consuming. The invention moreover regards an electronic equipment (10) arranged to perform the method and a computer program product arranged to make a processor (30) execute the method.