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Bayesian Model for HOPE Mass Spectrometers on Van Allen Probes

AuthorVira, A.; Larsen, B.; Skoug, R.; Fernandes, P.;
KeywordsVan Allen Probes
AbstractAbstract Space instruments rely heavily on modeling to predict and understand the instrument response, enabling a determination of the capabilities and resolution. The Bayesian approach provides a framework to incorporate prior knowledge and propagate uncertainty to predict the instrument response. We present an empirical Bayes model for the end-to-end performance of the Helium, Oxygen, Proton, and Electron (HOPE) mass spectrometers aboard the Van Allen Probes mission. In this model, we use a combination of external modeling, laboratory calibration, and expert opinion to construct the time-of-flight spectra and demonstrate good agreement with on-orbit data. The empirical Bayes model is applied to explore doubly charged ions and carbon, nitrogen, oxygen discrimination during the Van Allen Probes mission. This article is protected by copyright. All rights reserved.
Year of Publication2021
JournalJournal of Geophysical Research: Space Physics
Number of Pagese2020GC009297
Date Published01/2021