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The Tracking and Data Relay Satellite System

The Tracking and Data Relay Satellite System is a communication signal relay system which provides tracking and data acquisition services between spacecraft in low-Earth orbit and spacecraft control, or data processing, facilities.

The TDRSS space segment consists of seven on-orbit Tracking and Data Relay Satellites (TDRSs) located in geosynchronous orbit. The spacecraft constellation is distributed to provide global coverage.

The TDRSS ground segment is located near Las Cruces, New Mexico and consists of two functionally identical ground terminals collectively known as the White Sands Complex. Commands and data for Swift are uplinked from the MOC to the TDRSS and then from the TDRSS to Swift. Return data are downlinked from Swift via the TDRSS to the MOC at PSU.


next up previous contents
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Eleonora Troja 2013-09-03