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The issue of the dynamic relay satellite scheduling, which focuses on assigning time resource to user tasks, has been an important concern in the TDRSS system .
that AFSCN sites are ground-based and are only in view for about 5 minutes (when in low Earth orbit, as ASTRO and NextSat were), but TDRSS is satellite-based and is pretty much always in view.
Doll, "Overview of TDRSS," in Proceedings of the PSD Meeting of the COSPAR Technical Panel on Satellite Dynamics, at the 30th COSPAR Scientific Assembly, vol.
The TDRSS communications scheme loses the communications (COM) lock if a shift in the local oscillator (LO) frequency occurs.
In June of 1989, the COBE satellite began transmitting data to Earth via the Tracking and Data Relay Satellite System (TDRSS).
NASA uses the Tracking and Data Relay Satellite System (TDRSS) for relaying messages to and from low-orbit satellites such as the space telescope.
Observational data collected by the GPM Core Observatory will be transmitted via the NASA Tracking and Data Relay Satellite System (TDRSS) to the GPM Mission Operations Center at the NASA GSFC by way of the ground station at White Sands, New Mexico.
In addition, six space shuttle missions have carried a dozen Harris-developed, unfurlable S- and Ku-band antennas into orbit as part of NASA's Tracking and Data Relay Satellite System (TDRSS).
Satellites and spacecraft in low-Earth orbit use the Tracking and Data Relay Satellite System (TDRSS) network to continuously relay data to ground stations in White Sands, New Mexico and in Guam.
For example, NASA's Tracking and Data Relay Satellite System (TDRSS) has been the premier space-based data relay system for a wide variety of users.
Columbia has title to COLUMBIA-515 as well as control and operation of the commercial C-Band capacity on board two satellites in NASA's Tracking and Data Relay Satellite System (TDRSS).
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- TDRS Operations Control Center
- TDRSS Ground Terminal
- TDRSS Interface Processor Into Telops
- TDRSS Look Angle System
- TDRSS Network
- TDRSS Onboard Navigation System
- TDRSS Scheduling Window
- TDRSS Unscheduled Time
- TDRSS User Radio Frequency Test Set