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TDRS Program Logo Location of TDRS as of March 2019 An unflown TDRS on display at the Steven F. Udvar-Hazy Center in Chantilly, Virginia.. The U.S. Tracking and Data Relay Satellite System (TDRSS, pronounced "T-driss") is a network of American communications satellites (each called a tracking and data relay satellite, TDRS) and ground stations used by NASA for space communications.
TDRS-A was the first of TDRSS multiple satellite tracking system. The system is a concept utilizing communication satellite technology that improves and economizes the satellite tracking and telemetry operations. The base three geosynchronous satellites (one a standby) track and receive data from satellites for relay to a ground station. The ...
The DSN, as the name implies, tracks probes in deep space (more than 10,000 miles (16,000 km) from Earth), while NEN and TDRSS are used to communicate with satellites in low earth orbit. TDRSS uses a network of 10 geostationary communication satellites, and a single ground station at White Sands Test Facility. [1]
The Network Control Center Data System (NCCDS) is an element of the SN ground segment. [3] Collocated with the White Sands Tracking and Data Relay Satellite System, the NCCDS is the operations control facility for the network. It schedules most Space Network elements and supporting elements and provides interfaces for planning, acquisition ...
The Long Range Proving Ground Base was renamed Patrick Air Force Base on 1 August 1950, in honor of Major General Mason M. Patrick and the following year, on 30 June 1951, the Joint Long Range Proving Ground Division became the Air Force Missile Test Center and the Joint Long Range Proving Ground became the Florida Missile Test Range (FMTR).
The process uses two TDRSS communications relay satellites receiving the same telemetry broadcast from a satellite. The Doppler shifts experienced by both TDRS satellites can be processed using ground equipment to generate trajectory estimates without the need for onboard GPS solutions.
Specifically, NASA Wallops has been leading two range technology development projects: the Autonomous Flight Safety System (AFSS) and the Low Cost TDRSS Transceiver (LCT2). AFSS is a project to develop an autonomous on-board system that could augment or replace traditional ground-commanded Range Safety flight termination systems.
Along with Marisat F2, GOES 3 and LES-9, it was one of a number of satellites that were transferred to the US National Science Foundation in 1998, [11] for communications with the Amundsen–Scott South Pole Station. [12] After Marisat was retired, TDRS-1 became the primary means of communication with the research station. [12]