Energetic electron detection packages on board Chinese navigation satellites in MEO

Energetic electron measurements and spacecraft charging are of great significance for theoretical research in space physics weather applications. In this paper, the energetic detection package (EEDP) deployed on three Chinese navigation satellites medium Earth orbit (MEO) is reviewed. The instrument was developed by science payload team led Peking University. EEDP includes a pinhole medium-energy spectrometer (MES), high-energy detector (HED) based ΔE-E telescope technology, deep dielectric monitor (DDCM). MES measures energy spectra 50−600 keV electrons from nine directions with 180°×30° field view (FOV). HED spectrum 0.5−3.0 MeV one direction 30° cone-angle FOV. ground test calibration results indicate that these sensors exhibit excellent performance. Preliminary observations show measured good agreement magnetic electron-ion (MagEIS) Van Allen Probes spacecraft, an average relative deviation 27.3% spectra. currents voltages DDCM during storms consistent HED, demonstrating effectiveness DDCM. board MEO can provide important support radiation belts applications related to weather.