The Tracking and Data Acquisition System (TDAS) is currently being planned to support NASA missions and the Space Station and will serve as a replacement to the present Tracking and Data Relay Satellite System (TDRSS). Its operational date is currently projected for the late 1990s. Near term objectives involve the definition of a TDAS architecture, the development of functional and performance specifications and implementation of a TDRSS-to-TDAS transition plan. The present paper provides an overview of the baseline TDAS architecture and summarizes key ingredients of system and technology studies in progress. In particular, this paper addresses a summary of projected mission requirements for the TDAS era; a characterization of the space segment constellation; use of lasers, 60 GHz, and multibeam 30/20 GHz technologies; ground architecture and operational interfaces; a distributed hardware/software processing concept for more flexible and reliable interfaces, signal processing and operations. Also included is a status summary of the TDAS program plan for the 1984-1990 time frame. Finally, an overview is presented of NASA's current plans to augment the TDRSS to meet the Space Station IOC requirements in the time period 1993-2000.


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    Title :

    NASA's satellite relay tracking and data acquisition program


    Contributors:

    Publication date :

    1984-01-01


    Type of media :

    Conference paper


    Type of material :

    No indication


    Language :

    English






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