International Telemetering Conference Proceedings / October 14-16, 1980 / Bahia Hotel, San Diego, CaliforniaThe Ground Segment of the TDRS System is a highly complex family of automated communications equipment that is capable of providing a wide variety of ground communications signal processing capabilities to satisfy the special needs of each of the many user satellites. These needs are accommodated simultaneously for as many as 28 user satellites. This paper complements the previous papers in describing the Ground Segment functions and the implementation of the hardware that provides these functions. It describes the seven antennas needed to establish the communications paths to the four TDR satellites that make up the TDRSS. The forwar...