Translation of "frequency-modulation system " (English → French) :

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 overlaid 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 Galileo PRS users. A political agreement on the cooperation nece ...[+++]ssary between the two radionavigation systems is required in preparation for a crisis or in the event of a crisis.

However, the use of a single frequency band with the same modulation by one of the two PRS signals and one of the two GPS M code signals does not allow this jamming system to be applied directly.

However, the use of a single frequency band with the same modulation by one of the two PRS signals and one of the two GPS M code signals does not allow this jamming system to be applied directly.

WELCOMES the initialling of the Agreement between the European Community and the United States of America on the promotion, provision and use of GALILEO and GPS satellite-based navigation systems and related applications, NOTES with satisfaction the agreement reached recently on the issue of national security compatibility compliance requirements, together with a commitment from the United States, in the spirit of partnership upon which both sides have embarked, to find alternative PRS signal modulations if needed, and IS CONFIDENT that the Agreement which provides substantive benefits for both parties, can be signed in the near future, ...[+++]possibly at the EU-US summit on 26 June provided that the radio frequency compatibility document is finalised;