Comparison and Improvement of the Structure of the Space Plasma Detectors

For monitoring MEO (Medium Earth Orbit) space environment on orbit, for acquiring the time and space distribution of plasma parameters and the correlation between space plasma environment and typical surface potential to provide environment detection data for early warning of the surface of charged risk caused by the space plasma environment, for extracting key environment indicators causing surface charging, for building surface charged risk early warning environment standards, two programs were designed that the space plasma detectors working on MEO and GEO orbit, forming high and low collocation. This program starts from MEO and develops on GEO space plasma detection. Therefore, in order to adapt to the changing external environment from MEO to GEO, it is necessary to carry out adaptive improvement and comparative analysis for design (especially for structural design). In this paper, two structural design schemes are compared and their rationality is verified by dynamic simulation from data of modal analysis and frequency response for sine sweeping vibration and mechanical test. The final results and analysis point to a conclusion that the improvement of structure design scheme adapted to the large change from MEO to GEO satellite platform, which gave great support to the space plasma detector.