..., takeoff and traffic, always in the frequencies of the air traffic services (ATS) entities. ms=milliseconds sec=seconds bits/s=bits per seconds Hz=hertz per second MHz=million of hertz per second Symbols Communication technologies Noise Aircraft Aircraft cabins...

... system (ICAO Definition) GPS=Global positioning system of USA HALO=High altitude long operation HAPS=High altitude platform station Aircraft Airships Digital communication systems Communication technologies BMS=Broadband and multimedia systems CNS=Communication, navigation...

.... Artificial satellites Communication technologies Tracking Data communication systems The zenith pass problem exists for the antenna of elevation‐over‐azimuth type (Borretlo et al., 2002 ; Foltz et al., 1999 ; Ji et al., 2003). That is, when the elevation approaches 90...

... Risk assessment Analytic hierarchy process Communication technologies Artificial satellites Network connectivity is constantly increasing and is found everywhere with the development of communication system based on satellite constellation. Security of communications systems on satellite...