The ITU Radiocommunication Assembly considering a)that continuing advances in science and technology have increased the requirements for accuracy and service range of standard-frequency and time-signal emissions;b)that the work of several Radiocommunication Study Groups describes radiocommunication systems making use of satellites that give extensive coverage and satisfactory stability of signals over the Earth's surface;c)that satellite techniques are important for standard-frequency and time-signal comparison and dissemination systems.