The Deep Space Network: A Radio Communications Instrument for Deep Space Exploration
N. A. Renzetti, C. T. Stelzried, Gary K. Noreen, S. D. Slobin, S. M. Petty, David L. Trowbridge, H. J. Donnelly, Peter W. Kinman, J. W. Armstrong, Nathan A. Burow · 1983
The primary purpose of the Deep Space Network (DSN) is to serve as a communications instrument for deep space exploration, providing communications between the spacecraft and the ground facilities. The uplink communications channel provides instructions or commands to the spacecraft. The downlink communications channel provides command verification and spacecraft engineering and science instrument payload data.