Viking telecommunication effects of GEOS satellite interference based on testing at the Madrid deep space station

Details Viking telecommunication effects of GEOS satellite interference based on testing at the Madrid deep space station Viking telecommunication effects of GEOS satellite interference based on testing at the Madrid deep space station

Aug 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976dsn..nasa...60s&link_type=abstract

In its The Deep Space Network p 60-74 (SEE N76-29318 20-12)

Computer Science

Performance

Deep Space Network, Geos Satellites (Esa), Viking Mars Program, Ground Stations, Spain, Telemetry

Scientific paper

In support of the ongoing NASA-European Space Agency (ESA) effort to understand and control possible interference between missions, testing was conducted at the Madrid Deep Space Station from July 1975 to February 1976 to characterize the effect on Viking 1975 telecommunication link performance of Geodetic Earth-Orbiting Satellite (GEOS) downlink signals. The prime use of the data was to develop a capability to predict GEOS interference effects for evaluation of Viking 1975 mission impacts and possible temporary GEOS shutdown. Also, the data would serve as a basis for assessment of the GEOS impact on missions other than Viking as well as for more general interference applications. Performances of the reference receiver, telemetry, and planetary ranging were measured in the presence of various types of GEOS-related interference, including an unmodulated GEOS carrier and simulation of the actual spectrum by an ESA-supplied GEOS suitcase model.

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