This work is entirely based on the study of the Satellite alignment measurements, with the purpose of producing and developing the specifications necessary for the implementation of the alignment campaign for PLATiNO program, starting from system and satellite requirements. The project was launched and is financed by ASI (Agenzia Spaziale Italiana), whose goal is the definition and development of national enabling technologies for a standard ”multi-purpose” platform, in order to support its potential future lines of activity. Alignment measurements are led during the Satellite AIT (Assembly, Integration and Test) Campaign and they are crucial to verify the correct position of units within the constraints established by the requirements, and to confirm it after the environmental test campaign.