Instrument Information
IDENTIFIER urn:nasa:pds:context:instrument:rss.maven::1.0
NAME RADIO SCIENCE INSTRUMENT
TYPE RADIO-RADAR
DESCRIPTION 
In two-way mode a DSN ground station transmits an uplink carrier at about 
                   7.2 GHz, referenced to the local frequency and timing standard (FTS), which 
                   ensures greatest stability.  The uplink signal is received at the spacecraft; 
                   there are small phase changes in the signal if it has passed through the 
                   atmosphere/ionosphere of Mars.  The spacecraft telecommunication subsystem 
                   locks to the uplink signal and echoes it back at about 8.4 GHz.  Additional 
                   phase changes are imposed if the downlink signal passes through Mars 
                   atmosphere/ionosphere.  The downlink signal is received by the DSN ground 
                   station using its open-loop Radio Science Receiver, which is referenced to 
                   the FTS.
MODEL IDENTIFIER
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REFERENCES Asmar, S. W., N. A. Renzetti, The Deep Space Network as an Instrument for Radio Science Research, JPL Publication 80-93, Rev. 1, 15 April 1993. Available at https://ntrs.nasa.gov/search.jsp?R=19950015039

Deep Space Mission Systems (DSMS) Telecommunications Link Design Handbook (810-005), Jet Propulsion Laboratory, Pasadena, CA. Available at https://deepspace.jpl.nasa.gov/dsndocs/810-005/

Mars Reconnaissance Orbiter Telecommunications, Jet Propulsion Laboratory, Pasadena, CA. September 2006. Available at https://deepspace.jpl.nasa.gov/DPSummary/summary.html