Resolution 4 of the 18th CGPM
Time comparisons using satellite links
The 18th Conférence Générale des Poids et Mesures
- that high-precision timing is rapidly becoming an essential part of modern telecommunications,
- that two-way satellite links allow international time comparisons at very high precision,
- that it appears possible to exchange pseudo-random-noise timing signals simultaneously but without interference with other uses of the channel,
- that such pseudo-random-noise techniques also allow high-precision ranging,
recommends that the responsible national and international bodies support experiments over telecommunications satellite links for the study of synchronization techniques by means of pseudo-random-noise modulation within the framework of the international timing programs as part of the generation of International Atomic Time.