Activity: Talk or presentation › Oral presentation
The talk gave an overview of the evolution of GPS and the other GNSS since the first GPS satellite was launched in February 1978. The evolution has changed the concepts and aims of such systems from being military based to civilian focussed. Today there are four Global Navigation Satellite Systems, consisting of around 30 satellites each. Further to this, there are a number of regional satellite navigation systems, augmenting the GNSS capabilities. Various levels of precisions and update rates are available, as well as quality control.