• All satellites must have a method of storing and analyzing the data collected by the satellite, and a way of controlling its various systems
• This is usually performed by some type of computer
• The satellite subsystem that fulfills this role is called Telemetry Tracking and Control (TT&C)
• TT&C is the brain of the satellite and its operating system
• It logs every activity of the satellite, receives information from the ground station, and takes care of any general upkeep, or "housekeeping", the satellite needs to do
• TT&C is made up of three components: Telemetry, Tracking, and Control.