FY-3E Satellite Plasma Analyzer

The FY-3E satellite plasma analyzer marks China's first detection of the characteristics, occurrence, and development of the typical plasma environment in the dawn-dusk orbit space. It provides data source support for operational space weather alerts and forecasts, helps ensure the in-orbit safety of the satellite, and accumulates space environment detection data for space environment modeling and space physics research. This paper gives a detailed introduction to the detection technology adopted by the FY-3E satellite plasma analyzer. We calibrated its performance through a calibration experiment and then analyzed and compared it with similar instruments in China. It is indicated that the instrument is capable of measuring an ion energy spectrum of 24 eV similar to 32 keV and an electron energy spectrum of 23.7 eV similar to 31.6 keV, its field of view reaches 180 degrees x 90 degrees, and the inversed measurement range of spacecraft absolute potential is better than -30 kV similar to+30 kV. All these contribute to a notably improved technology for plasma and satellite potential detection of China's LEO satellites.