Abstract
This paper briefly describes pros and cons of using arrays of small antennas instead of large single dish antennas for spacecraft telemetry, command, and tracking (TT&C) - communications and navigation (C&N) - and science support that the Deep Space Network (DSN) normally provides. It considers functionality and performance aspects, mainly for TT&C, though it also considers science. It only briefly comments on the cost aspects that seem to favor arrays of small antennas over large single antennas, at least for receiving (downlinks).
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