PSP Bibliography


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Found 3 entries in the Bibliography.

Showing entries from 1 through 3


Enabling coherent Ka-band downlink with a software-defined radio

The migration to Ka-band for science downlink on deep space missions increases data rates significantly, but also presents new challenges to radio and RF system designers. One challenge is to maintain low carrier phase noise on a coherent downlink. Thermal noise on the X-band uplink that is within the bandwidth of the carrier recovery process modulates the phase of the coherent downlink. For missions that use X-band for command uplink and Ka-band for science downlink, such as the NASA Solar Probe Plus mission, the ratio of d ...

Adams, Norman; Angert, Matthew; Copeland, David; Haskins, Christopher;

Published by: IEEE Aerospace Conference Proceedings      Published on:

YEAR: 2016     DOI:

Additive noise; Interplanetary flight; NASA; Radio navigation; Software radio; Parker Engineering


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;

Published by: IEEE Aerospace Conference Proceedings      Published on:

YEAR: 2014     DOI:

Interplanetary flight; NASA; Parker Engineering


Comparison of Ka-band link design strategies for solar probe plus

This study compares different strategies for planning and controlling the Ka-band downlink for NASA s upcoming Solar Probe Plus mission. This downlink provides the science data return: as such the availability of a specific pass is of less importance than the average performance of the link over an entire orbit. Three options for setting the link data rate were considered in this study: 1) a single data rate optimized for maximum effective data rate at the beginning of the pass, 2) a single data rate set to optimize return o ...

Copeland, David; Adams, Norman;

Published by: IEEE Aerospace Conference Proceedings      Published on:

YEAR: 2013     DOI:

Distribution functions; NASA; Parker Engineering