Until now, in its negotiations with the Americans, the Commission has put forward the scenario that the United States will not be able to jam one of the planned PRS signals because it will be overlaid on one of the future military GPS signals and it is not possible to selectively jam one of two signals o
verlaid on a single frequency band with the same modulation. As explained in point3.3 hereabove, the modulation used for the overlay would enable Galileo to transmit a much more "robust" and reliable signal. As a result, the United States would not be able to selectively jam G
...[+++]alileo PRS users. A political agreement on the cooperation necessary between the two radionavigation systems is required in preparation for a crisis or in the event of a crisis.