network of measures for the geodesia, tracking and coordination, as well as the system construction, means of implementation, management, manutanzione.

摘要

A network for general application is created consisting of a single national centre of the centralised type, or alternatively of a number of peripheral stations for more interactive operation, whenever the third level vertices of the network need to become numerous and be connected to a first network level whose nodes are connected together and with whose centre are interfaced leased telephone networks or a dedicated satellite channel, or a dedicated radio link. IMAGE