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Proceedings Paper

South Atlantic anomaly and CubeSat design considerations
Author(s): Judy A. Fennelly; William R. Johnston; Daniel M. Ober; Gordon R. Wilson; T. Paul O'Brien; Stuart L. Huston
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Paper Abstract

Effects of the South Atlantic Anomaly (SAA) on spacecraft in low Earth orbit (LEO) are well known and documented. The SAA exposes spacecraft in LEO to high dose of ionizing radiation as well as higher than normal rates of Single Event Upsets (SEU) and Single Event Latch-ups (SEL). CubeSats, spacecraft built around 10 x 10 x 10 cm cubes, are even more susceptible to SEUs and SELs due to the use of commercial off-the-shelf components for electronics and payload instrumentation. Examination of the SAA using both data from the Defense Meteorological Satellite Program (DMSP) and a new set of models for the flux of particles is presented. The models, AE9, AP9, and SPM for energetic electrons, energetic protons and space plasma, were developed for use in space system design. These models introduce databased statistical constraints on the uncertainties from measurements and climatological variability. Discussion of the models’ capabilities and limitations with regard to LEO CubeSat design is presented.

Paper Details

Date Published: 10 November 2015
PDF: 17 pages
Proc. SPIE 9604, Solar Physics and Space Weather Instrumentation VI, 960406 (10 November 2015); doi: 10.1117/12.2190595
Show Author Affiliations
Judy A. Fennelly, Air Force Research Lab. (United States)
William R. Johnston, Air Force Research Lab. (United States)
Daniel M. Ober, Air Force Research Lab. (United States)
Gordon R. Wilson, Air Force Research Lab. (United States)
T. Paul O'Brien, The Aerospace Corp. (United States)
Stuart L. Huston, Atmospheric and Environmental Research, Inc. (United States)


Published in SPIE Proceedings Vol. 9604:
Solar Physics and Space Weather Instrumentation VI
Silvano Fineschi; Judy Fennelly, Editor(s)

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