Internal Charge Estimates for Satellites in Low Earth Orbit and Space Environment Attribution

摘要: Space assets are continuously bathed by charged particles making their components susceptible to the effects of spacecraft charging. While orbits not embedded within radiation belts, low earth orbiting with high inclinations do pass through horns these belts during each polar crossing, transiting potentially dangerous particle populations many times per day. Occasionally, altitude include significant energetic ~1 MeV electrons, which can penetrate typical shielding and accumulate dielectric materials on ungrounded conductors, a process known as internal The National Oceanic Atmospheric Administration Polar Operational Environmental Satellites (POES) have experienced on-orbit anomalies in boost voltage regulator (BVR) that is suspected be associated accumulation discharge ~800 keV electrons. We used observations from Medium Energy Proton Electron Detector (MEPED) instrument first principles model charge [11] develop estimates electron (IC) over lifetime POES Metop for range time constants. With advantage afforded larger database anomalies, we able show BVR generally attributable simple way subsequent >800 nor higher fluence lower energy >300 To best our knowledge, this paper presents long-term IC highly inclined orbits.