Instrument Information
IDENTIFIER urn:nasa:pds:context:instrument:dsn.media::1.2
NAME Deep Space Station Media Calibration Subsystem
TYPE Radio Science
DESCRIPTION The Media Calibration Subsystem (DMD) provides three types of data: GPS data, which includes L-band carrier phase and satellite information; weather data, encompassing temperature, pressure, humidity, precipitation, and wind statistics; and data from fixed Water Vapor Radiometers (WVR) that detect water vapor emissions. An advanced version, the AWVR, operates at selected DSN stations to measure emissions at specific frequencies and is controlled by the JPL Radar and Radio Science Systems Group. The Advanced Media Calibration (AMC) system also comprises a microwave temperature profiler and a sensitive digital barometer, capable of accurately measuring tropospheric frequency shifts.
MODEL IDENTIFIER
NAIF INSTRUMENT IDENTIFIER
SERIAL NUMBER
REFERENCES Mannucci, A. J., B. D. Wilson, D. N. Yuan, C. H. Ho, U. J. Lindqwister, and T.F. Runge, A global mapping technique for GPS-derived ionospheric total electron content measurements, Radio Science, 33, 3, 565-582, 1982.

Keihm, S. J., Water vapor radiometer measurements of the tropospheric delay fluctuations at Goldstone over a full year, TDA Progress Report, 42-122, 1-11, Pasadena: Jet Propulsion Laboratory, 1995.

Keihm, S. J., A. Tanner, and H. Rosenberger, Measurements and calibration of tropospheric delay at Goldstone from the Cassini media calibration system, IPN Progress Report 42-158, Pasadena: Jet Propulsion Laboratory, 2004.

Asmar, S. W., J. W. Armstrong, L. Iess, and P. Tortora, Spacecraft Doppler Tracking: Noise Budget and Accuracy Achievable in Precision Radio Science Observations, Radio Science, 40, RS2001, doi:10.1029/2004RS003101, 2005.