A GIOVE Derived Galileo Electron Spectrum and Comparison to Models
| Autor: | Craig Underwood, PA Morris, B. Taylor, Keith Ryden |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Physics
Nuclear and High Energy Physics Spacecraft business.industry Astronomy Radiation Spectral line symbols.namesake Nuclear Energy and Engineering Observatory Van Allen radiation belt symbols Galileo (satellite navigation) Satellite navigation Electrical and Electronic Engineering business MERLIN Remote sensing |
| Zdroj: | IEEE Transactions on Nuclear Science. 56:3423-3428 |
| ISSN: | 1558-1578 0018-9499 |
| DOI: | 10.1109/tns.2009.2034149 |
| Popis: | Two precursor satellites for the European satellite navigation system, Galileo have been launched, GIOVE-A and -B. Both spacecraft carry monitors to characterise the radiation environment in the MEO environment. CEDEX, built by the University of Surrey and Merlin, built by QinetiQ, are carried on GIOVE-A and SREM built by Oerlikon Space is on board GIOVE-B. All three monitors have been operating since their respective launches and have measured the trapped electron population as well as solar protons and GCRs. An electron energy spectrum has been derived from Merlin measurements and validated with data from GIOVE-B/SREM and the IREM instrument on the INTEGRAL observatory. The derived energy spectra are compared to environment models, suggesting a harder energy spectrum than expected, but not exceeding worst-case FLUMIC predictions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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