Low earth orbit navigation in the TDAS eraIt is pointed out that by the 1990s projected increases in scientific data volume and spacecraft engineering data will require an extension of the Tracking and Data Relay Satellite System (TDRSS). There will also be requirements with respect to improvements related to navigation. The Tracking Data Acquisition System (TDAS) is defined as the heir to TDRSS for the 1990s and beyond. A pre-Phase A TDAS concept definition study has recently been completed. The study covers a 15 year planning period extending from 1990 to 2005. The present investigation is concerned with TDAS-based alternatives, taking into account aspects of orbit and time determination. Attention is given an overview of TDRSS capabilities, pertiment TDAS architecture options, potential user navigation accuracy requirements, and some results of preliminary navigation performance evaluations.
Document ID
19840035233
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Elrod, B. D. (Stanford Telecommunications, Inc. McLean, VA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1984
Subject Category
Space Communications, Spacecraft Communications, Command And Tracking