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2015

In-flight performance of the Van Allen Probes RF telecommunications system

The NASA Van Allen Probes mission (previously called the Radiation Belt Storm Probes) successfully launched on 30 August 2012. The twin spacecraft, designed, built, and operated by The Johns Hopkins University Applied Physics Laboratory (JHU/APL), has been successfully operating within Earth׳s radiation belts since then, returning critical science data revealing new insights into the physics of the radiation belts. Because of the extreme radiation environment, all spacecraft subsystems including the communications system ha ...

Srinivasan, Dipak; Adams, Norm; Wallis, Robert;

YEAR: 2015     DOI: 10.1016/j.actaastro.2015.05.001

Van Allen Probes

2014

Optimization of deep-space Ka-band link schedules

Downlink scheduling methods that minimize either contact time or data latency are described. For deep-space missions these two methods yield very different schedules. Optimal scheduling algorithms are straightforward for ideal mission scenarios. In practice, additional schedule requirements preclude a tractable optimal algorithm. In lieu of an optimal solution, an iterative sub-optimal algorithm is described. These methods are motivated in part by a need to balance mission risk, which increases with data latency, and mission ...

Adams, Norman; Copeland, David; Mick, Alan; Pinkine, Nickalaus;

YEAR: 2014     DOI: 10.1109/AERO.2014.6836351

optimisation; scheduling; space communication links; statistical analysis



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