Complex sentence: Designed from the beginning as an international centre handling only en-route traffic, it does not have its own sensors since the MUAC airspace was already sufficiently covered by the sensors of the 4 participating states (Belgium, Netherlands, Luxembourg and Germany).
Split into simpler sentences: Designed from the beginning as an international centre handling only en-route traffic, it did not have its own sensors. The MUAC airspace was already sufficiently covered by the sensors of the 4 participating states (Belgium, Netherlands, Luxembourg and Germany).