Engineering topics
Publications and source records attributed to Finley, S..
This experiment was part of a telecommunications demenstration to evaluate the advantage of Ka-band (32 GHz)over X-band (8.4 GHz).
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
The DS1 Beacon Monitor Operations Experiment (BMOX) was to demonstrate a new approach in mission operations which can lower mission operations costs.
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In 1981, the Inter-Agency Consultative Group (composed of European, Soviet, Japanese and American space agency representatives) conceived the idea of using the two Soviet Vega spacecraft as pathfinders for Giotto since they would arrive at Halley's Comet approximately one week before Giotto. The Vega trajectory data and the Halley camera angle data were combined to improve the comet orbit accuracy. This was used to improve the Giotto fly-by targeting. The DSN performed delta DOR (VLBI) and one-way Doppler measurements of the Vega spacecraft for orbit determination. Although the early part-up phase had many problems, the results during the critical November 30, 1985 to March 4, 1986 operational phase had an overall 95 percent success rate, with 59 successes out of 62 two-station passes.