Communications , Navigation and Surveillance ( CNS ) requirements must be developed in order to establish a CNS architecture supporting Unmanned Air Systems integration in the National Air Space ( UAS in the NAS ) . These requirements must address cybersecurity , future communications , satellite - based navigation and APNT , and scalable surveillance and situational awareness . CNS integration , consolidation and miniaturization requirements are also important to support the explosive growth in small UAS deployment . Air Traffic Management ( ATM ) must also be accommodated to support critical Command and Control ( C2 ) for Air Traffic Controllers ( ATC ) . This document therefore presents UAS CNS requirements that will guide the architecture .