Which of the following is the name for the movement of radio waves from the transmission antenna to the receiver's antenna?

The movement of radio waves from the transmission antenna to the receiver's antenna is termed propagation. This term encompasses the various ways that radio waves travel through space, whether through direct line-of-sight, reflection off surfaces, refraction as they pass through different media, or diffraction around obstacles. Understanding propagation is crucial for effective communication using Unmanned Aircraft Systems (UAS), as it impacts signal strength, coverage area, and overall reliability of the connection between the UAS and its operator or ground station.

In the context of telecommunications and UAS operations, knowledge of propagation helps in planning flight paths and ensuring that signals remain strong and clear throughout the mission. This is essential for maintaining control of the UAS and for the safety of operations.