Non-Terrestrial

Aeronautical Telecommunication Network The ICAO-defined network-layer standard providing common addressing, routing, and application-support services across heterogeneous underlying aeronautical datalink media — VHF Data Link, satellite, and HF — enabling datalink applications to function… Concept/Framework Airborne Relay Airborne Relay is a communications relay carried by an aircraft, drone, or other airborne platform to extend coverage or bridge a gap by forwarding communications over terrain, distance, or damaged… Hardware AIS A VHF-based maritime protocol under which vessels automatically and continuously broadcast identity, position, course, speed, and navigational status data, received by nearby vessels and shore stations terrestrially and, via Satellite-AIS,… Protocol Antenna An antenna is a transducer that couples electrical signals to free space electromagnetic waves and vice versa. It determines how RF energy is radiated, received, and shaped in space. Hardware Antenna Placement Antenna placement is the practice of selecting and configuring the physical position of an antenna to optimize radio performance, coverage, and reliability. It includes height, orientation, separation, and exposure to… Concept/Framework Antenna Reflector Antenna Reflector is a shaped surface that directs electromagnetic energy toward or away from a feed element to form a desired radiation pattern. Hardware Anti Jam Modulation Anti Jam Modulation is a modulation approach selected to reduce the impact of interference or jamming on a communications link by using waveform structures that are resistant to disruption, facilitating… Protocol Anti Jam Modulation Scheme Anti Jam Modulation Scheme is a modulation approach designed to improve communication resilience in the presence of interference or deliberate jamming through selection or adaptation of waveform structures that improve… Concept/Framework Array Calibration Array calibration is the process of measuring and adjusting the relative behavior of elements in an antenna or sensor array so the system produces the intended response. It is used… Concept/Framework Atmospheric Absorption Atmospheric Absorption is the loss of electromagnetic energy as radio waves pass through the atmosphere due to interaction with atmospheric gases, resulting in propagation loss that reduces received signal strength. Concept/Framework