The aerospace industry is currently trying to improve the performance of telecommunications satellites and one of the ways to do this is to increase the size of the reflectors, which are expected to be up to 5m in diameter. This increase, however, involves the use of large structures to connect the antenna to the main body of the satellite and, since the rods undergo deformations due to temperature gradients in space, a metrological system is required to know the attitude of the reflector. In this sense, INRiM (Istituto Nazionale di Ricerca Metrologica - National Institute of Metrological Research) proposes the use of optical metrology based on the exchange of information between the spacecraft and the antenna through light beams.