Aviation

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 Attitude Control Attitude Control is the management of an object's orientation in space. It is used to maintain pointing, stability, or alignment in vehicles and platforms. Concept/Framework Beam Coverage Beam Coverage is the spatial area over which a radio beam provides usable service. It describes the footprint of signal availability from a directional beam, determined by antenna pattern, transmit… Concept/Framework Beyond Line Of Sight Command Link Beyond Line Of Sight Command Link is a command path that allows remote control when the operator and vehicle are not in direct visual range. It extends command reach through… Operations CNS/ATM The ICAO-defined framework integrating satellite-based communications, navigation, and surveillance technologies with automated air traffic management procedures, extending air traffic control capability into airspace beyond the reach of ground-based radar and… Concept/Framework Communications Payload Communications Payload is the payload portion of a spacecraft or platform that performs the communications mission. It handles the useful communications function of the asset. Hardware CPDLC A text-based digital messaging protocol enabling air traffic controllers and pilots to exchange clearances, instructions, and routine reports over a data link, using standardized pre-formatted message elements rather than free-form… Protocol Datalink Communications The category of digital, text-based communication systems exchanging messages, clearances, and operational data between aircraft and ground systems — air traffic control and airline operations — as an alternative or… Concept/Framework Digital Payload Digital Payload is the data-bearing part of a communications payload that handles user traffic or service information. Software Doppler Compensation Doppler Compensation is the adjustment of frequency or timing to counteract Doppler shift caused by relative motion between transmitter and receiver. Operations