Explain the purposes of satellite Tracking, Telemetry and Commanding. How is satellite position and velocity determined, and how is this information communicated to satellite operators and users? What are the two kinds of telemetry and what are their purposes? What is the basic purpose of commanding a satellite?

Explain the purposes of satellite Tracking, Telemetry and Commanding.

Tracking: How is satellite position and velocity determined, and how is this information communicated to satellite operators and users?

Telemetry: What are the two kinds of telemetry and what are their purposes?

Commanding: What is the basic purpose of commanding a satellite?