What is a satellite beacon?

A satellite beacon is a specific type of transmission emitted by a satellite that provides status information about the satellite's operation. This transmission can include vital data such as the satellite's power levels, health, position, and other operational parameters that are important for monitoring its functionality and ensuring proper communication with ground stations or other satellites.

The transmission is typically designed to be received by ground-based receiving stations, which can then interpret the information to maintain and troubleshoot the satellite's operation. This status information is crucial for both operational satellites and those in low-Earth orbit, as it allows users and operators to verify that the satellite is functioning correctly and ready to serve its mission, whether for communication, navigation, or scientific research.

Other options, such as the primary transmit antenna, an indicator light, or a reflective surface do not encapsulate the key function of monitoring and communication associated with the beacon's role, which is primarily to relay status information.