Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987tdar.nasa..110h&link_type=abstract
In its The Telecommunications and Data Acquisition Report p 110-119 (SEE N87-17943 10-32)
Astronomy and Astrophysics
Astronomy
Deep Space Network, Downlinking, Extremely High Frequencies, Mission Planning, Spacecraft Communication, Antennas, Cassini Mission, Cost Reduction, Mars Sample Return Missions, Radio Astronomy, Reliability, Transmission Efficiency
Scientific paper
The benefits of using 32 GHz downlinks for a set of deep space missions, as well as the implications to radio science and the Deep Space Network (DSN) are documented. The basic comparison is between the use of the current X-band (8.4 GHz) and a 32 GHZ (Ka-band) downlink. There was shown to be approximately an 8 dB (about 600%) link advantage for 32 GHz. This 8 dB advantage would be able to either reduce mission cost or improve mission science return. Included here are studies on how the 8 dB advantage would be used for the Cassini and Mars Sample Return missions. While the work is preliminary, it shows that the 8 dB advantage can be exploited to provide large benefits to future deep space missions. There can be significant mass and/or power savings to the spacecraft, which can translate into cost savings. Alternatively, the increased downlink telecommunications performance can provide a greater science return.
Hansen David M.
Kliore Arvydas J.
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