1. Space Science Applications Laboratory; The Aerospace Corporation; Los Angeles California USA
2. School of Chemistry and Physics; University of Adelaide; Adelaide South Australia Australia
3. ATRAD Pty Ltd.; Adelaide South Australia Australia
4. Department of Electrical and Computer Engineering; University of Illinois at Urbana-Champaign; Urbana Illinois USA
5. Center for Atmospheric and Space Sciences and Department of Physics; Utah State University; Logan Utah USA